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[SOURCE: https://www.mako.co.il/mako-vod] \| [TOKENS: 3470]
רכשו מנוי גידי מגלה שהוא עומד למות והיקום נותן לו הזדמנות לערבב את הקלפים מחדש. ואם הכל טעות? עם אדיר מילר, ליאור כלפון, מירי מסיקה אליס מילר סרטה של אדוה דדון 20.02.26 המבוקשת מאיראן עונה 2026פרק 819.02.26 המשבר של מיטב ורון עונה 2פרק 818.02.26 מיכל ונוני, 'הזוג הוורוד' פרק 420.02.26 ועידת התחבורה הציבורית ועידות וכנסים19.02.26 עינב בובליל עונה 7פרק 2418.02.26 כשגידי פגש את נויה עונה 1פרק 217.02.26 מלכודת למטפל עונה 6פרק 316.02.26 ריטה והמעריץ האיראני עונה 9פרק 415.02.26 הקבוצות מתאחדות עונה 2פרק 714.02.26 מתן בלו – הסיפור המלא 13.02.26 השוטר מספר 1 עונה 2026פרק 712.02.26 יותם ונופר מגיעים פרק 313.02.26 דיווחים מפגישת ביבי-טראמפ עונה 23פרק 1511.02.26 מנחם הורוביץ עונה 7פרק 2311.02.26 המחקרים החדשים: איך להישאר צעירים לנצח? עמית מן הדור הבא: התינוקות שנקראו על שמה המוסף - טיולים \| המסלול לסופ"ש שאסור לפספס אדוה דדון על מחדל האמבה בכנרת "לא נאפשר בריחת רוצחים לערים פלסטיניות" האינטרסים שקידם מנכ"ל משרד התפוצות ה-AI שיוזיל את החופשה ארבל ואריאל בריאיון זוגי ראשון האולסטאר ההיסטורי של דני אבדיה לוחמות משיבות לקמפיין נגד שילוב נשים בצה"ל ראש עיריית באר שבע כמו שלא שמעתם כדאי להתייעץ עם AI בעניינים רפואיים? המערכונים הגדולים של הפרלמנט נועה קירל חוזרת לביקור בבית ילדותה ליהיא גרינר "אני אומרת תודה לאל על האוזמפיק" תעשיית ה-SaaS פודקאסט השנה 5 שנים ברציפות עדו הר טוב ענת ביין עם מנכ"ל קבוצת GITAM BBDO ושותף וידויו של כוכב הנדל"ן עונה 1פרק 1329.11.20 הולי דגרס 16.02.26 האהבה הישנה של עדן עדן ודנית מדברים על כל מה שמעניין חקלאות העתיד פרק 110.02.26 בין תעשייה לעשייה חברתית פרק 210.02.26 הביטחון התזונתי של כולנו פרק 310.02.26 עושים טוב בקהילה פרק 410.02.26 מתי חשבתם על המזון שלנו? 10.02.26 האם תהיה תקיפה באיראן? 20.02.26 לקראת תקיפה? 20.02.26 רותם כהן 20.02.26 פרשת "תרומה" עונה 7פרק 820.02.26 קים אור אזולאי פותחת הכל 20.02.26 פרויקטים של התחדשות עירונית עונה 719.02.26 דחייה או תקיפה הלילה? 19.02.26 ועידת התחבורה הציבורית ועידות וכנסים19.02.26 רצח רודף רצח 19.02.26 תעשיית ה-SaaS פרק 25719.02.26 עינב בובליל עונה 7פרק 2418.02.26 הניתוחים של הסלבס 18.02.26 המגעים בין ארה"ב לאיראן 18.02.26 ההיערכות לתקיפה אמריקנית 18.02.26 ד''ר שירלי הרשקו 18.02.26 אולפן שישי 20.02.26 המהדורה המרכזית 19.02.26 שבע עם קרן מרציאנו 19.02.26 שש עם עודד בן עמי 19.02.26 חמש עם רפי רשף 19.02.26 מהדורת היום 19.02.26 12 בצוהריים 19.02.26 המהדורה המרכזית 18.02.26 שבע עם קרן מרציאנו 18.02.26 שש עם עודד בן עמי 18.02.26 חמש עם רפי רשף 18.02.26 מהדורת היום 18.02.26 12 בצוהריים 18.02.26 המהדורה המרכזית 17.02.26 שבע עם קרן מרציאנו 17.02.26 לאה שנירר ודוד דביר על הטיפולים שעברו הרקדן מבוליווד שפתח מסעדה בתל אביב הסיכוי לאוסקר: סרט ישראלי יתמודד על הפסלון למרות שהודה בתקיפה: שי אביטל מתחיל מחדש נועה קירל חוזרת לביקור בבית ילדותה מפיקת "טהרן" דנה עדן תובא למנוחות בישראל רק בת 12: הבת של קים קרדשיאן מקימה מותג מותה המפתיע של מפיקת טהרן דנה עדן נטע ברזילי עם שיר חדש על האקס הפוסט טראומתי קרוז בקהאם משיק שיר חדש הסדרה החדשה על משפחת קנדי השחקן זוכה האוסקר נפטר בגיל 95 פרידה ממתי כספי מערכת הבריאות של פרדס חנה יעל פוליאקוב לא מתנצלת אשר ונהוראי מדברים פתוח באד בנאי רני רהב לא נשאר חייב הפרוטוקולים של ביבי הפגישה הבהולה עם טראמפ ברק ומסמכי אפשטיין אם זה קרה עם אילה חסון מבזק זוגיות סטייל פרדס חנה הרגעים הכי מצחיקים מרמזור צחוקים עם אסי ורותם קטעים קורעים של אדיר מילר המערכונים של שאולי המערכונים האהובים של ארץ נהדרת המערכונים הגדולים של הפרלמנט תנו לזה לשקוע פרק 125.01.26 טייק הזהב פרק 225.01.26 מרקורי במסיבה פרק 325.01.26 קצת אוויר פרק 425.01.26 יש לנו שיר? פרק 525.01.26 מצטרפים לתהליך יצירת שיר 25.01.26 ערוץ 12 שידור חי עם כתוביות אולפן שישי כ.סמויות 20.02.26 המהדורה המרכזית כ.סמויות 19.02.26 המהדורה המרכזית כ.סמויות 18.02.26 המהדורה המרכזית כ.סמויות 17.02.26 המהדורה המרכזית כ.סמויות 16.02.26 המהדורה המרכזית כ.סמויות 15.02.26 חדשות סוף השבוע כ.סמויות 14.02.26 אולפן שישי כ.סמויות 13.02.26 המהדורה המרכזית כ.סמויות 12.02.26
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[SOURCE: https://en.wikipedia.org/wiki/Mastodon_(social_network)] \| [TOKENS: 3967]
Contents Mastodon (social network) Mastodon is a free and open-source software platform for decentralized social networking with microblogging features similar to Twitter. It operates as a federated network of independently managed servers that communicate using the ActivityPub protocol, allowing users to connect across different instances within the Fediverse. Each Mastodon instance establishes its own moderation policies and content guidelines, distinguishing it from centrally controlled social media platforms. First released in 2016 by Eugen Rochko, Mastodon has positioned itself as an alternative to mainstream social media, particularly for users seeking decentralized, community-driven spaces. The platform has experienced multiple surges in adoption, most notably following the Twitter acquisition by Elon Musk in 2022, as users sought alternatives to Twitter. It is part of a broader shift toward decentralized social networks, including Bluesky and Lemmy. Mastodon emphasizes user privacy and moderation flexibility, offering features such as granular post visibility controls, content warning options, and local community-driven moderation. The software is written in Ruby on Rails and Node.js, with a web interface built using React and Redux. It is interoperable with other ActivityPub-based platforms, such as Threads, and supports various third-party applications on desktop and mobile devices. Functionality Users post short-form status messages, historically known as "toots", for others to see and interact with. On a standard Mastodon instance, these messages can include up to 500 text-based characters, greater than Twitter's 280-character limit. Some instances support even longer messages. Images, audio files, videos or polls can also be added to a message. Users join a specific Mastodon server, rather than a single centralized website or application. The servers are connected as nodes in a network, and each server can administer its own rules, account privileges, and whether to share messages to and from other servers. Users can communicate and follow each other across connected Mastodon servers with usernames similar in format to full email addresses. Since version 2.9.0, Mastodon's web user interface has offered a single-column mode for new users by default. In advanced mode, the interface approximates the microblogging interface of TweetDeck. Mastodon includes a number of specific privacy features. Each message has a variety of privacy options available, and users can choose whether the message is public or private. Messages can display public on a global feed, known as a timeline, or can be shared only to the user's followers. Messages can also be marked as unlisted from timelines or direct between users. Users can also mark their accounts as completely private. In the timeline, messages can display with an optional content warning feature, which requires readers to click on the hidden main body of the message to reveal it. Mastodon servers have used this feature to hide spoilers, trigger warnings, and not safe for work (NSFW) content, though some accounts use the feature to hide links and thoughts others might not want to read. Mastodon aggregates messages in local and federated timelines in real time. The local timeline shows messages from users on a singular server, while the federated timeline shows messages across all participating Mastodon servers. In early 2017, journalists like Sarah Jeong distinguished Mastodon from Twitter for its approach to combating harassment. Mastodon uses community-based moderation, in which each server can limit or filter out undesirable types of content, while Twitter uses a single, global policy on content moderation. Servers can choose to limit or filter out messages with disparaging content. The founder of Mastodon, Eugen Rochko, believes that small, closely related communities deal with unwanted behavior more effectively than a large company's small safety team. In Move Slowly and Build Bridges, Robert W. Gehl argues that predominantly white participation has shaped Mastodon in ways that affect how reports of racism are received and limit its ability to replicate Black Twitter on Twitter. Users can also block and report others to administrators, much like on Twitter. Instance administrators can block other instances from interacting with their own, an action called defederation. By posting toots hashtagged with #fediblock, some instance administrators and users alert others of issues requiring moderation. Mastodon by default allows searching for hashtags and mentioned accounts in the Fediverse. Server administrators can optionally enable Elasticsearch to search the full-text of public posts that have opted in to being indexed. Versions In September 2018, with the release of version 2.5 with redesigned public profile pages, Mastodon marked its 100th release. Mastodon 2.6 was released in October 2018, introducing the possibilities of verified profiles and live, in-stream link previews for images and videos. Version 2.7, in January 2019, made it possible to search for multiple hashtags at once, instead of searching for just a single hashtag, with more robust moderation capabilities for server administrators and moderators, while accessibility, such as contrast for users with sight issues, was improved. The ability for users to create and vote in polls, as well as a new invitation system to manage registrations was integrated in April 2019. Mastodon 2.8.1, released in May 2019, made images with content warnings blurred instead of completely hidden. In version 2.9 in June 2019, an optional single-column view was added. This view became the default displayed to new users, with a user "preferences" option to switch to a multiple-column-based view.[citation needed] In August 2020, Mastodon 3.2 was released. It included a redesigned audio player with custom thumbnails and the ability to add personal notes to one's profile. In July 2021, an official client for iOS devices was released. According to the project's then CEO, Eugen Rochko, the release was part of an effort to attract new users. Mastodon 4.0 was released in November 2022, including language support for translating posts, editing posts and following hashtags. Mastodon 4.5 was released in November 2025. Among other features it introduced quote posts, which were previously rejected from being implemented due to concerns about toxicity and harassment. To mitigate these issues Mastodon's quote post feature has been designed in a way that lets users decide if and by whom their posts can be quoted. Software Mastodon is published as free and open-source software under the Affero GPL license, allowing anyone to use the software or modify it as they wish. Servers can be run by any individual or organization, and users can join these servers as they wish. The server software itself is powered by Ruby on Rails and Node.js, with its web client being written in React.js and Redux. The only database software supported is PostgreSQL, with Redis being used for job processing and various actions that Mastodon needs to process. The service is interoperable with the fediverse, a collection of social networking services which use the ActivityPub protocol for communication between each other, with previous versions containing support for OStatus. Client apps for interacting with the Mastodon API are available for desktop computer operating systems, including Windows, macOS and the Linux family of operating systems, as well as mobile phones running iOS and Android. The API is open for anyone to utilize, allowing clients to be built for any operating system that can connect to the internet. Mastodon uses the ActivityPub protocol for federation; this allows users to communicate between independent Mastodon instances and other ActivityPub compatible services. Thus, Mastodon is generally considered to be a part of the Fediverse. Services utilizing the ActivityPub protocol exist which allow for searching all posts on all instances as long as users opt-in. For similar reasons, only hashtags can appear in a Mastodon instance's trending topics, not arbitrary popular words. Trending topics vary between instances, since individual instances are aware of different subsets of posts from the whole fediverse. While Mastodon's decentralized structure is one of its most distinctive features, it also poses additional security challenges. Since many Mastodon instances are run by volunteers, some security experts are concerned about data security and responsiveness to new threats and vulnerabilities across the network, considering the difficulty of configuring and maintaining an instance as well as uneven skill levels among administrators. Administrators of an instance also have access to the private information of any users that are either registered with that instance or have federated private content to it, so a malicious administrator from either a local or remote instance can read private posts and direct messages if it has been stored onto the instance's database (which is not encrypted). Configuration errors and security bugs in server implementations (either on Mastodon or another fediverse platform) has led to user data either being scraped or modified by attackers. It is worth noting that Mastodon also collects considerably less personal data, compared to other social media platforms, which makes it a lower-value target and reduces potential damage. The creator of Mastodon, Eugen Rochko, argues that these issues do not set it apart from other software products that can be hosted by non-professionals. In 2023, the Mozilla Foundation contracted cybersecurity firm Cure53 to perform penetration testing on the Mastodon software, in preparation for establishing an instance for the Mozilla community. The testing discovered several vulnerabilities, including one called "TootRoot" that would have enabled arbitrary code execution and another that would have enabled cross-site scripting attacks through oEmbed cards. These vulnerabilities were patched in July 2023. Mastodon has been the main suspect in an issue regarding the generation of OpenGraph link previews, wherein the data from the link is not cached by the post and transmitted to other instances. Many instances automatically fetch the preview data as soon as they receive the post, creating an accidental DDoS attack that can temporarily increase the load of a victim's server. A fix to add federation for link previews was planned for 4.3, but has since been delayed for Mastodon 4.4. Adoption Mastodon was created by Eugen Rochko and revealed to the public via Hacker News in October 2016. It gained significant adoption in 2022 following the acquisition of Twitter by Elon Musk. While Mastodon was first released in October 2016, the service began to expand in late March and early April 2017. Servers were mostly operated by academic institutions, journalists, hobbyists, and activists. The Verge wrote that the community at this time was small and that it had yet to attract the personalities that keep users at Twitter. Not long after, it quickly gained popularity and became the dominant platform in the fediverse and overtaking the previous platform, GNU social. The global use had risen from 766,500 users as of 1 August 2017, to 1 million users on 1 December 2017. In November 2017 artists, writers, and entrepreneurs such as Chuck Wendig, John Scalzi, Melanie Gillman and later John O'Nolan joined in. Another spike in popularity came in March through April 2018, due to the concerns about user privacy raised by the #deletefacebook effort. Membership of Mastodon and other alternative social media sites increased in early December 2018[better source needed] after Tumblr announced its intention to ban all adult content from the site. In November 2019, nearly 20,000 Twitter users in India temporarily shifted to Mastodon over complaints by users against Twitter's moderation policies. To circumvent the increasing online censorship of social networks in mainland China, an increasing number of Chinese-language users have chosen to migrate to Mastodon in 2022. A spike in Mastodon's user participation occurred in April 2022, following the 25 April announcement of Elon Musk purchasing Twitter. By 27 April, 30,000 new users had joined Mastodon. On 28 April 2022, the European Data Protection Supervisor (EDPS) launched the official ActivityPub microblogging platform (EU Voice) of the EU institutions, bodies and agencies (EUIs), based on Mastodon. Musk's acquisition became final on 27 October 2022. Mastodon had an increase of 70,000 new users from a resultant "diaspora" on 28 October alone. Daily downloads increased substantially, rising from 3,400 daily downloads on 27 October to 113,400 on 6 November 2022. According to Rochko, by 3 November, use of the federated network had grown to 665,000 active users, with a few growing pains. In particular, Mastodon's largest instance, mastodon.social, needed capacity upgrades to handle the new load. Accounts on a server called journa.host founded by Adam Davidson are restricted to professional journalists. Mastodon's increased adoption continued in the days following the Twitter takeover. On 11 November, the number of new users of the platform compared to the previous week was reported to be 700,000, moving Mastodon over the 7 million user mark. During that period, several prominent figures joined Mastodon, including prominent actors, comedians, journalists, political activists, and politicians. In December 2022, the number of monthly active users of Mastodon reached two million. On 15 December, the official Mastodon Twitter account was banned from Twitter, as well as other accounts with links to some Mastodon instances. On the following day, Twitter began to flag all Mastodon links as malware, preventing Twitter users from sharing them. A Mediaite opinion piece on the bannings included an erroneous report of an account for "John Mastodon" (a misspelling of @joinmastodon), "founder of a competing social media company named after himself", being banned. Subsequently, Mastodon users wrote fictional backstories and memes about "John Mastodon" and circulated the hashtag #JohnMastodon. Following the Mastodon suspension and ban on Mastodon links on Twitter, Twitter introduced a new policy on 18 December to prohibit sharing links on Twitter to a variety of social media websites, with Mastodon being one of those blocked. The policy stated that it prohibited links in both tweets and account details and that accounts that violated the policy would be suspended. By 19 December, the policy and official mentions about it had been removed from Twitter web pages. Musk stated the following day that banning users for posting Mastodon links had been a mistake. Rochko stated that at least five venture capital firms looking to invest in Mastodon had been turned away by December 2022, and that Mastodon's nonprofit status would not be jeopardized. By the start of January 2023, Mastodon had 1.8 million active users, down 30% from its peak of over 2.5 million active users in early December 2022. On 19 March 2023, Mastodon surpassed the ten million mark for registered user accounts. In July 2023, Mastodon’s founder, Eugen Rochko, stated that monthly active users were increasing again, surpassing the 2-million mark. A study posted to arXiv in November 2023, showed that following Elon Musk's acquisition of Twitter and subsequent changes that ensued, there was a significant migration of users to alternative platforms. Forks As a result of its open source nature and ability to be deployed without restriction, various organizations, companies and governments have started their own Mastodon instances. While most instances have mentioned their usage of Mastodon for the service and identify themselves as a Mastodon instance, a small minority of installations have attempted to conceal their origin by removing all mentions of Mastodon from the public view. These instances also don't release their source code modifications, violating the AGPLv3 license in use by Mastodon. In 2017, Pixiv launched a Mastodon-based social network named Pawoo. The service was acquired by media company Russell in December 2019; in December 2022, Russell sold it to The Social Coop Limited, a Cayman Islands-based entity affiliated with Web3 firm Mask Network. Pawoo is banned by most instances on Mastodon due to allowing lolicon art. In April 2019, computer manufacturer Purism released a fork of Mastodon named Librem Social. Gab, a controversial social network with a far-right user base, changed its software platform to a fork of Mastodon and became the largest Mastodon node in July 2019. Gab's adoption of Mastodon allowed Gab to be accessed from third-party Mastodon applications, although four of them blocked Gab shortly after the change. In response, Mastodon's main contributors stated in their blog that they were "completely opposed to Gab’s project and philosophy", and criticized Gab for attempting "to monetize and platform racist content while hiding behind the banner of free speech" and for "paywalling basic features that are freely available on Mastodon". Gab later removed ActivityPub federation from its codebase due to various perceived technical issues, as well as plans to build its own protocol. Tooter is an Indian social networking product launched in September 2020 that uses the Mastodon source code, initially without releasing its modifications. The service also identified itself as being wholly made in India, despite its origin. In October 2021, (at the time) former President of the United States Donald Trump founded Truth Social, which is based on Mastodon. Initially, Truth Social did not make its source code available, violating Mastodon's AGPLv3 license. Eugen Rochko sent a formal letter to Truth Social's chief legal officer on 26 October 2021. On 12 November 2021, Truth Social silently published its source code. In April 2022, the European Union launched its own Mastodon and PeerTube instances via the European Data Protection Supervisor, dubbing them "EU Voice" and "EU Video". The instances were a test run of whether it would be sustainable to run its own social media platforms. While the pilot ended two years later in 2024 (after an extension in 2023 for an additional year) and taking the instances offline after being unable to find an organization that would take over operations, the European Commission has launched their own separate instance. In December 2022, the Mozilla Foundation launched a Mastodon instance under mozilla.social, initially with closed registrations before opening it up as a private beta. However, the instance has since been discontinued and is offline as of 17 December 2024. Maintenance Development of Mastodon is crowdfunded, and does not contain any support for advertisements or monetized features; as of November 2022, it was supported by 3,500 people. As an additional revenue source Mastodon is offering paid hosting, moderation, and support of Mastodon servers for larger organisations, like the European Commission and the German state of Schleswig-Holstein. In mid-January 2025, the Mastodon team announced it would transition to a new European non-profit to run the Mastodon project and called for funding assistance. The project is maintained by the German non-profit Mastodon gGmbH and was headed by founder Eugen Rochko, who officially stepped down as CEO on 18 November 2025 to be replaced by Felix Hlatky. The organisation chose to reward Rochko with a one-time compensation of 1 million Euro for his past contributions to the project. Mastodon was registered in Germany as a nonprofit organization (German: gemeinnützige GmbH) between 2021 and 2024; a US nonprofit was established in April 2024. The organization started selling stuffed toys of its mascot in October 2024. See also Further reading References External links
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[SOURCE: https://en.wikipedia.org/wiki/United_States#cite_note-329] \| [TOKENS: 17273]
Contents United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various uninhabited islands in Oceania and the Caribbean.[j] It is a megadiverse country, with the world's third-largest land area[c] and third-largest population, exceeding 341 million.[k] Paleo-Indians first migrated from North Asia to North America at least 15,000 years ago, and formed various civilizations. Spanish colonization established Spanish Florida in 1513, the first European colony in what is now the continental United States. British colonization followed with the 1607 settlement of Virginia, the first of the Thirteen Colonies. Enslavement of Africans was practiced in all colonies by 1770 and supplied most of the labor for the Southern Colonies' plantation economy. Clashes with the British Crown began as a civil protest over the illegality of taxation without representation in Parliament and the denial of other English rights. They evolved into the American Revolution, which led to the Declaration of Independence and a society based on universal rights. Victory in the 1775–1783 Revolutionary War brought international recognition of U.S. sovereignty and fueled westward expansion, further dispossessing native inhabitants. As more states were admitted, a North–South division over slavery led the Confederate States of America to declare secession and fight the Union in the 1861–1865 American Civil War. With the United States' victory and reunification, slavery was abolished nationally. By the late 19th century, the U.S. economy outpaced the French, German and British economies combined. As of 1900, the country had established itself as a great power, a status solidified after its involvement in World War I. Following Japan's attack on Pearl Harbor in 1941, the U.S. entered World War II. Its aftermath left the U.S. and the Soviet Union as rival superpowers, competing for ideological dominance and international influence during the Cold War. The Soviet Union's collapse in 1991 ended the Cold War, leaving the U.S. as the world's sole superpower. The U.S. federal government is a representative democracy with a president and a constitution that grants separation of powers under three branches: legislative, executive, and judicial. The United States Congress is a bicameral national legislature composed of the House of Representatives (a lower house based on population) and the Senate (an upper house based on equal representation for each state). Federalism grants substantial autonomy to the 50 states. In addition, 574 Native American tribes have sovereignty rights, and there are 326 Native American reservations. Since the 1850s, the Democratic and Republican parties have dominated American politics. American ideals and values are based on a democratic tradition inspired by the American Enlightenment movement. A developed country, the U.S. ranks high in economic competitiveness, innovation, and higher education. Accounting for over a quarter of nominal global GDP, its economy has been the world's largest since about 1890. It is the wealthiest country, with the highest disposable household income per capita among OECD members, though its wealth inequality is highly pronounced. Shaped by centuries of immigration, the culture of the U.S. is diverse and globally influential. Making up more than a third of global military spending, the country has one of the strongest armed forces and is a designated nuclear state. A member of numerous international organizations, the U.S. plays a major role in global political, cultural, economic, and military affairs. Etymology Documented use of the phrase "United States of America" dates back to January 2, 1776. On that day, Stephen Moylan, a Continental Army aide to General George Washington, wrote a letter to Joseph Reed, Washington's aide-de-camp, seeking to go "with full and ample powers from the United States of America to Spain" to seek assistance in the Revolutionary War effort. The first known public usage is an anonymous essay published in the Williamsburg newspaper The Virginia Gazette on April 6, 1776. Sometime on or after June 11, 1776, Thomas Jefferson wrote "United States of America" in a rough draft of the Declaration of Independence, which was adopted by the Second Continental Congress on July 4, 1776. The term "United States" and its initialism "U.S.", used as nouns or as adjectives in English, are common short names for the country. The initialism "USA", a noun, is also common. "United States" and "U.S." are the established terms throughout the U.S. federal government, with prescribed rules.[l] "The States" is an established colloquial shortening of the name, used particularly from abroad; "stateside" is the corresponding adjective or adverb. "America" is the feminine form of the first word of Americus Vesputius, the Latinized name of Italian explorer Amerigo Vespucci (1454–1512);[m] it was first used as a place name by the German cartographers Martin Waldseemüller and Matthias Ringmann in 1507.[n] Vespucci first proposed that the West Indies discovered by Christopher Columbus in 1492 were part of a previously unknown landmass and not among the Indies at the eastern limit of Asia. In English, the term "America" usually does not refer to topics unrelated to the United States, despite the usage of "the Americas" to describe the totality of the continents of North and South America. History The first inhabitants of North America migrated from Siberia approximately 15,000 years ago, either across the Bering land bridge or along the now-submerged Ice Age coastline. Small isolated groups of hunter-gatherers are said to have migrated alongside herds of large herbivores far into Alaska, with ice-free corridors developing along the Pacific coast and valleys of North America in c. 16,500 – c. 13,500 BCE (c. 18,500 – c. 15,500 BP). The Clovis culture, which appeared around 11,000 BCE, is believed to be the first widespread culture in the Americas. Over time, Indigenous North American cultures grew increasingly sophisticated, and some, such as the Mississippian culture, developed agriculture, architecture, and complex societies. In the post-archaic period, the Mississippian cultures were located in the midwestern, eastern, and southern regions, and the Algonquian in the Great Lakes region and along the Eastern Seaboard, while the Hohokam culture and Ancestral Puebloans inhabited the Southwest. Native population estimates of what is now the United States before the arrival of European colonizers range from around 500,000 to nearly 10 million. Christopher Columbus began exploring the Caribbean for Spain in 1492, leading to Spanish-speaking settlements and missions from what are now Puerto Rico and Florida to New Mexico and California. The first Spanish colony in the present-day continental United States was Spanish Florida, chartered in 1513. After several settlements failed there due to starvation and disease, Spain's first permanent town, Saint Augustine, was founded in 1565. France established its own settlements in French Florida in 1562, but they were either abandoned (Charlesfort, 1578) or destroyed by Spanish raids (Fort Caroline, 1565). Permanent French settlements were founded much later along the Great Lakes (Fort Detroit, 1701), the Mississippi River (Saint Louis, 1764) and especially the Gulf of Mexico (New Orleans, 1718). Early European colonies also included the thriving Dutch colony of New Nederland (settled 1626, present-day New York) and the small Swedish colony of New Sweden (settled 1638 in what became Delaware). British colonization of the East Coast began with the Virginia Colony (1607) and the Plymouth Colony (Massachusetts, 1620). The Mayflower Compact in Massachusetts and the Fundamental Orders of Connecticut established precedents for local representative self-governance and constitutionalism that would develop throughout the American colonies. While European settlers in what is now the United States experienced conflicts with Native Americans, they also engaged in trade, exchanging European tools for food and animal pelts.[o] Relations ranged from close cooperation to warfare and massacres. The colonial authorities often pursued policies that forced Native Americans to adopt European lifestyles, including conversion to Christianity. Along the eastern seaboard, settlers trafficked Africans through the Atlantic slave trade, largely to provide manual labor on plantations. The original Thirteen Colonies[p] that would later found the United States were administered as possessions of the British Empire by Crown-appointed governors, though local governments held elections open to most white male property owners. The colonial population grew rapidly from Maine to Georgia, eclipsing Native American populations; by the 1770s, the natural increase of the population was such that only a small minority of Americans had been born overseas. The colonies' distance from Britain facilitated the entrenchment of self-governance, and the First Great Awakening, a series of Christian revivals, fueled colonial interest in guaranteed religious liberty. Following its victory in the French and Indian War, Britain began to assert greater control over local affairs in the Thirteen Colonies, resulting in growing political resistance. One of the primary grievances of the colonists was the denial of their rights as Englishmen, particularly the right to representation in the British government that taxed them. To demonstrate their dissatisfaction and resolve, the First Continental Congress met in 1774 and passed the Continental Association, a colonial boycott of British goods enforced by local "committees of safety" that proved effective. The British attempt to then disarm the colonists resulted in the 1775 Battles of Lexington and Concord, igniting the American Revolutionary War. At the Second Continental Congress, the colonies appointed George Washington commander-in-chief of the Continental Army, and created a committee that named Thomas Jefferson to draft the Declaration of Independence. Two days after the Second Continental Congress passed the Lee Resolution to create an independent, sovereign nation, the Declaration was adopted on July 4, 1776. The political values of the American Revolution evolved from an armed rebellion demanding reform within an empire to a revolution that created a new social and governing system founded on the defense of liberty and the protection of inalienable natural rights; sovereignty of the people; republicanism over monarchy, aristocracy, and other hereditary political power; civic virtue; and an intolerance of political corruption. The Founding Fathers of the United States, who included Washington, Jefferson, John Adams, Benjamin Franklin, Alexander Hamilton, John Jay, James Madison, Thomas Paine, and many others, were inspired by Classical, Renaissance, and Enlightenment philosophies and ideas. Though in practical effect since its drafting in 1777, the Articles of Confederation was ratified in 1781 and formally established a decentralized government that operated until 1789. After the British surrender at the siege of Yorktown in 1781, American sovereignty was internationally recognized by the Treaty of Paris (1783), through which the U.S. gained territory stretching west to the Mississippi River, north to present-day Canada, and south to Spanish Florida. The Northwest Ordinance (1787) established the precedent by which the country's territory would expand with the admission of new states, rather than the expansion of existing states. The U.S. Constitution was drafted at the 1787 Constitutional Convention to overcome the limitations of the Articles. It went into effect in 1789, creating a federal republic governed by three separate branches that together formed a system of checks and balances. George Washington was elected the country's first president under the Constitution, and the Bill of Rights was adopted in 1791 to allay skeptics' concerns about the power of the more centralized government. His resignation as commander-in-chief after the Revolutionary War and his later refusal to run for a third term as the country's first president established a precedent for the supremacy of civil authority in the United States and the peaceful transfer of power. In the late 18th century, American settlers began to expand westward in larger numbers, many with a sense of manifest destiny. The Louisiana Purchase of 1803 from France nearly doubled the territory of the United States. Lingering issues with Britain remained, leading to the War of 1812, which was fought to a draw. Spain ceded Florida and its Gulf Coast territory in 1819. The Missouri Compromise of 1820, which admitted Missouri as a slave state and Maine as a free state, attempted to balance the desire of northern states to prevent the expansion of slavery into new territories with that of southern states to extend it there. Primarily, the compromise prohibited slavery in all other lands of the Louisiana Purchase north of the 36°30′ parallel. As Americans expanded further into territory inhabited by Native Americans, the federal government implemented policies of Indian removal or assimilation. The most significant such legislation was the Indian Removal Act of 1830, a key policy of President Andrew Jackson. It resulted in the Trail of Tears (1830–1850), in which an estimated 60,000 Native Americans living east of the Mississippi River were forcibly removed and displaced to lands far to the west, causing 13,200 to 16,700 deaths along the forced march. Settler expansion as well as this influx of Indigenous peoples from the East resulted in the American Indian Wars west of the Mississippi. During the colonial period, slavery became legal in all the Thirteen colonies, but by 1770 it provided the main labor force in the large-scale, agriculture-dependent economies of the Southern Colonies from Maryland to Georgia. The practice began to be significantly questioned during the American Revolution, and spurred by an active abolitionist movement that had reemerged in the 1830s, states in the North enacted laws to prohibit slavery within their boundaries. At the same time, support for slavery had strengthened in Southern states, with widespread use of inventions such as the cotton gin (1793) having made slavery immensely profitable for Southern elites. The United States annexed the Republic of Texas in 1845, and the 1846 Oregon Treaty led to U.S. control of the present-day American Northwest. Dispute with Mexico over Texas led to the Mexican–American War (1846–1848). After the victory of the U.S., Mexico recognized U.S. sovereignty over Texas, New Mexico, and California in the 1848 Mexican Cession; the cession's lands also included the future states of Nevada, Colorado and Utah. The California gold rush of 1848–1849 spurred a huge migration of white settlers to the Pacific coast, leading to even more confrontations with Native populations. One of the most violent, the California genocide of thousands of Native inhabitants, lasted into the mid-1870s. Additional western territories and states were created. Throughout the 1850s, the sectional conflict regarding slavery was further inflamed by national legislation in the U.S. Congress and decisions of the Supreme Court. In Congress, the Fugitive Slave Act of 1850 mandated the forcible return to their owners in the South of slaves taking refuge in non-slave states, while the Kansas–Nebraska Act of 1854 effectively gutted the anti-slavery requirements of the Missouri Compromise. In its Dred Scott decision of 1857, the Supreme Court ruled against a slave brought into non-slave territory, simultaneously declaring the entire Missouri Compromise to be unconstitutional. These and other events exacerbated tensions between North and South that would culminate in the American Civil War (1861–1865). Beginning with South Carolina, 11 slave-state governments voted to secede from the United States in 1861, joining to create the Confederate States of America. All other state governments remained loyal to the Union.[q] War broke out in April 1861 after the Confederacy bombarded Fort Sumter. Following the Emancipation Proclamation on January 1, 1863, many freed slaves joined the Union army. The war began to turn in the Union's favor following the 1863 Siege of Vicksburg and Battle of Gettysburg, and the Confederates surrendered in 1865 after the Union's victory in the Battle of Appomattox Court House. Efforts toward reconstruction in the secessionist South had begun as early as 1862, but it was only after President Lincoln's assassination that the three Reconstruction Amendments to the Constitution were ratified to protect civil rights. The amendments codified nationally the abolition of slavery and involuntary servitude except as punishment for crimes, promised equal protection under the law for all persons, and prohibited discrimination on the basis of race or previous enslavement. As a result, African Americans took an active political role in ex-Confederate states in the decade following the Civil War. The former Confederate states were readmitted to the Union, beginning with Tennessee in 1866 and ending with Georgia in 1870. National infrastructure, including transcontinental telegraph and railroads, spurred growth in the American frontier. This was accelerated by the Homestead Acts, through which nearly 10 percent of the total land area of the United States was given away free to some 1.6 million homesteaders. From 1865 through 1917, an unprecedented stream of immigrants arrived in the United States, including 24.4 million from Europe. Most came through the Port of New York, as New York City and other large cities on the East Coast became home to large Jewish, Irish, and Italian populations. Many Northern Europeans as well as significant numbers of Germans and other Central Europeans moved to the Midwest. At the same time, about one million French Canadians migrated from Quebec to New England. During the Great Migration, millions of African Americans left the rural South for urban areas in the North. Alaska was purchased from Russia in 1867. The Compromise of 1877 is generally considered the end of the Reconstruction era, as it resolved the electoral crisis following the 1876 presidential election and led President Rutherford B. Hayes to reduce the role of federal troops in the South. Immediately, the Redeemers began evicting the Carpetbaggers and quickly regained local control of Southern politics in the name of white supremacy. African Americans endured a period of heightened, overt racism following Reconstruction, a time often considered the nadir of American race relations. A series of Supreme Court decisions, including Plessy v. Ferguson, emptied the Fourteenth and Fifteenth Amendments of their force, allowing Jim Crow laws in the South to remain unchecked, sundown towns in the Midwest, and segregation in communities across the country, which would be reinforced in part by the policy of redlining later adopted by the federal Home Owners' Loan Corporation. An explosion of technological advancement, accompanied by the exploitation of cheap immigrant labor, led to rapid economic expansion during the Gilded Age of the late 19th century. It continued into the early 20th, when the United States already outpaced the economies of Britain, France, and Germany combined. This fostered the amassing of power by a few prominent industrialists, largely by their formation of trusts and monopolies to prevent competition. Tycoons led the nation's expansion in the railroad, petroleum, and steel industries. The United States emerged as a pioneer of the automotive industry. These changes resulted in significant increases in economic inequality, slum conditions, and social unrest, creating the environment for labor unions and socialist movements to begin to flourish. This period eventually ended with the advent of the Progressive Era, which was characterized by significant economic and social reforms. Pro-American elements in Hawaii overthrew the Hawaiian monarchy; the islands were annexed in 1898. That same year, Puerto Rico, the Philippines, and Guam were ceded to the U.S. by Spain after the latter's defeat in the Spanish–American War. (The Philippines was granted full independence from the U.S. on July 4, 1946, following World War II. Puerto Rico and Guam have remained U.S. territories.) American Samoa was acquired by the United States in 1900 after the Second Samoan Civil War. The U.S. Virgin Islands were purchased from Denmark in 1917. The United States entered World War I alongside the Allies in 1917 helping to turn the tide against the Central Powers. In 1920, a constitutional amendment granted nationwide women's suffrage. During the 1920s and 1930s, radio for mass communication and early television transformed communications nationwide. The Wall Street Crash of 1929 triggered the Great Depression, to which President Franklin D. Roosevelt responded with the New Deal plan of "reform, recovery and relief", a series of unprecedented and sweeping recovery programs and employment relief projects combined with financial reforms and regulations. Initially neutral during World War II, the U.S. began supplying war materiel to the Allies of World War II in March 1941 and entered the war in December after Japan's attack on Pearl Harbor. Agreeing to a "Europe first" policy, the U.S. concentrated its wartime efforts on Japan's allies Italy and Germany until their final defeat in May 1945. The U.S. developed the first nuclear weapons and used them against the Japanese cities of Hiroshima and Nagasaki in August 1945, ending the war. The United States was one of the "Four Policemen" who met to plan the post-war world, alongside the United Kingdom, the Soviet Union, and China. The U.S. emerged relatively unscathed from the war, with even greater economic power and international political influence. The end of World War II in 1945 left the U.S. and the Soviet Union as superpowers, each with its own political, military, and economic sphere of influence. Geopolitical tensions between the two superpowers soon led to the Cold War. The U.S. implemented a policy of containment intended to limit the Soviet Union's sphere of influence; engaged in regime change against governments perceived to be aligned with the Soviets; and prevailed in the Space Race, which culminated with the first crewed Moon landing in 1969. Domestically, the U.S. experienced economic growth, urbanization, and population growth following World War II. The civil rights movement emerged, with Martin Luther King Jr. becoming a prominent leader in the early 1960s. The Great Society plan of President Lyndon B. Johnson's administration resulted in groundbreaking and broad-reaching laws, policies and a constitutional amendment to counteract some of the worst effects of lingering institutional racism. The counterculture movement in the U.S. brought significant social changes, including the liberalization of attitudes toward recreational drug use and sexuality. It also encouraged open defiance of the military draft (leading to the end of conscription in 1973) and wide opposition to U.S. intervention in Vietnam, with the U.S. totally withdrawing in 1975. A societal shift in the roles of women was significantly responsible for the large increase in female paid labor participation starting in the 1970s, and by 1985 the majority of American women aged 16 and older were employed. The Fall of Communism and the dissolution of the Soviet Union from 1989 to 1991 marked the end of the Cold War and left the United States as the world's sole superpower. This cemented the United States' global influence, reinforcing the concept of the "American Century" as the U.S. dominated international political, cultural, economic, and military affairs. The 1990s saw the longest recorded economic expansion in American history, a dramatic decline in U.S. crime rates, and advances in technology. Throughout this decade, technological innovations such as the World Wide Web, the evolution of the Pentium microprocessor in accordance with Moore's law, rechargeable lithium-ion batteries, the first gene therapy trial, and cloning either emerged in the U.S. or were improved upon there. The Human Genome Project was formally launched in 1990, while Nasdaq became the first stock market in the United States to trade online in 1998. In the Gulf War of 1991, an American-led international coalition of states expelled an Iraqi invasion force that had occupied neighboring Kuwait. The September 11 attacks on the United States in 2001 by the pan-Islamist militant organization al-Qaeda led to the war on terror and subsequent military interventions in Afghanistan and in Iraq. The U.S. housing bubble culminated in 2007 with the Great Recession, the largest economic contraction since the Great Depression. In the 2010s and early 2020s, the United States has experienced increased political polarization and democratic backsliding. The country's polarization was violently reflected in the January 2021 Capitol attack, when a mob of insurrectionists entered the U.S. Capitol and sought to prevent the peaceful transfer of power in an attempted self-coup d'état. Geography The United States is the world's third-largest country by total area behind Russia and Canada.[c] The 48 contiguous states and the District of Columbia have a combined area of 3,119,885 square miles (8,080,470 km2). In 2021, the United States had 8% of the Earth's permanent meadows and pastures and 10% of its cropland. Starting in the east, the coastal plain of the Atlantic seaboard gives way to inland forests and rolling hills in the Piedmont plateau region. The Appalachian Mountains and the Adirondack Massif separate the East Coast from the Great Lakes and the grasslands of the Midwest. The Mississippi River System, the world's fourth-longest river system, runs predominantly north–south through the center of the country. The flat and fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast. The Rocky Mountains, west of the Great Plains, extend north to south across the country, peaking at over 14,000 feet (4,300 m) in Colorado. The supervolcano underlying Yellowstone National Park in the Rocky Mountains, the Yellowstone Caldera, is the continent's largest volcanic feature. Farther west are the rocky Great Basin and the Chihuahuan, Sonoran, and Mojave deserts. In the northwest corner of Arizona, carved by the Colorado River, is the Grand Canyon, a steep-sided canyon and popular tourist destination known for its overwhelming visual size and intricate, colorful landscape. The Cascade and Sierra Nevada mountain ranges run close to the Pacific coast. The lowest and highest points in the contiguous United States are in the State of California, about 84 miles (135 km) apart. At an elevation of 20,310 feet (6,190.5 m), Alaska's Denali (also called Mount McKinley) is the highest peak in the country and on the continent. Active volcanoes in the U.S. are common throughout Alaska's Alexander and Aleutian Islands. Located entirely outside North America, the archipelago of Hawaii consists of volcanic islands, physiographically and ethnologically part of the Polynesian subregion of Oceania. In addition to its total land area, the United States has one of the world's largest marine exclusive economic zones spanning approximately 4.5 million square miles (11.7 million km2) of ocean. With its large size and geographic variety, the United States includes most climate types. East of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The western Great Plains are semi-arid. Many mountainous areas of the American West have an alpine climate. The climate is arid in the Southwest, Mediterranean in coastal California, and oceanic in coastal Oregon, Washington, and southern Alaska. Most of Alaska is subarctic or polar. Hawaii, the southern tip of Florida and U.S. territories in the Caribbean and Pacific are tropical. The United States receives more high-impact extreme weather incidents than any other country. States bordering the Gulf of Mexico are prone to hurricanes, and most of the world's tornadoes occur in the country, mainly in Tornado Alley. Due to climate change in the country, extreme weather has become more frequent in the U.S. in the 21st century, with three times the number of reported heat waves compared to the 1960s. Since the 1990s, droughts in the American Southwest have become more persistent and more severe. The regions considered as the most attractive to the population are the most vulnerable. The U.S. is one of 17 megadiverse countries containing large numbers of endemic species: about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species of flowering plants are found in Hawaii, few of which occur on the mainland. The United States is home to 428 mammal species, 784 birds, 311 reptiles, 295 amphibians, and around 91,000 insect species. There are 63 national parks, and hundreds of other federally managed monuments, forests, and wilderness areas, administered by the National Park Service and other agencies. About 28% of the country's land is publicly owned and federally managed, primarily in the Western States. Most of this land is protected, though some is leased for commercial use, and less than one percent is used for military purposes. Environmental issues in the United States include debates on non-renewable resources and nuclear energy, air and water pollution, biodiversity, logging and deforestation, and climate change. The U.S. Environmental Protection Agency (EPA) is the federal agency charged with addressing most environmental-related issues. The idea of wilderness has shaped the management of public lands since 1964, with the Wilderness Act. The Endangered Species Act of 1973 provides a way to protect threatened and endangered species and their habitats. The United States Fish and Wildlife Service implements and enforces the Act. In 2024, the U.S. ranked 35th among 180 countries in the Environmental Performance Index. Government and politics The United States is a federal republic of 50 states and a federal capital district, Washington, D.C. The U.S. asserts sovereignty over five unincorporated territories and several uninhabited island possessions. It is the world's oldest surviving federation, and its presidential system of federal government has been adopted, in whole or in part, by many newly independent states worldwide following their decolonization. The Constitution of the United States serves as the country's supreme legal document. Most scholars describe the United States as a liberal democracy.[r] Composed of three branches, all headquartered in Washington, D.C., the federal government is the national government of the United States. The U.S. Constitution establishes a separation of powers intended to provide a system of checks and balances to prevent any of the three branches from becoming supreme. The three-branch system is known as the presidential system, in contrast to the parliamentary system where the executive is part of the legislative body. Many countries around the world adopted this aspect of the 1789 Constitution of the United States, especially in the postcolonial Americas. In the U.S. federal system, sovereign powers are shared between three levels of government specified in the Constitution: the federal government, the states, and Indian tribes. The U.S. also asserts sovereignty over five permanently inhabited territories: American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands. Residents of the 50 states are governed by their elected state government, under state constitutions compatible with the national constitution, and by elected local governments that are administrative divisions of a state. States are subdivided into counties or county equivalents, and (except for Hawaii) further divided into municipalities, each administered by elected representatives. The District of Columbia is a federal district containing the U.S. capital, Washington, D.C. The federal district is an administrative division of the federal government. Indian country is made up of 574 federally recognized tribes and 326 Indian reservations. They hold a government-to-government relationship with the U.S. federal government in Washington and are legally defined as domestic dependent nations with inherent tribal sovereignty rights. In addition to the five major territories, the U.S. also asserts sovereignty over the United States Minor Outlying Islands in the Pacific Ocean and the Caribbean. The seven undisputed islands without permanent populations are Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, and Palmyra Atoll. U.S. sovereignty over the unpopulated Bajo Nuevo Bank, Navassa Island, Serranilla Bank, and Wake Island is disputed. The Constitution is silent on political parties. However, they developed independently in the 18th century with the Federalist and Anti-Federalist parties. Since then, the United States has operated as a de facto two-party system, though the parties have changed over time. Since the mid-19th century, the two main national parties have been the Democratic Party and the Republican Party. The former is perceived as relatively liberal in its political platform while the latter is perceived as relatively conservative in its platform. The United States has an established structure of foreign relations, with the world's second-largest diplomatic corps as of 2024[update]. It is a permanent member of the United Nations Security Council and home to the United Nations headquarters. The United States is a member of the G7, G20, and OECD intergovernmental organizations. Almost all countries have embassies and many have consulates (official representatives) in the country. Likewise, nearly all countries host formal diplomatic missions with the United States, except Iran, North Korea, and Bhutan. Though Taiwan does not have formal diplomatic relations with the U.S., it maintains close unofficial relations. The United States regularly supplies Taiwan with military equipment to deter potential Chinese aggression. Its geopolitical attention also turned to the Indo-Pacific when the United States joined the Quadrilateral Security Dialogue with Australia, India, and Japan. The United States has a "Special Relationship" with the United Kingdom and strong ties with Canada, Australia, New Zealand, the Philippines, Japan, South Korea, Israel, and several European Union countries such as France, Italy, Germany, Spain, and Poland. The U.S. works closely with its NATO allies on military and national security issues, and with countries in the Americas through the Organization of American States and the United States–Mexico–Canada Free Trade Agreement. The U.S. exercises full international defense authority and responsibility for Micronesia, the Marshall Islands, and Palau through the Compact of Free Association. It has increasingly conducted strategic cooperation with India, while its ties with China have steadily deteriorated. Beginning in 2014, the U.S. had become a key ally of Ukraine. After Donald Trump was elected U.S. president in 2024, he sought to negotiate an end to the Russo-Ukrainian War. He paused all military aid to Ukraine in March 2025, although the aid resumed later. Trump also ended U.S. intelligence sharing with the country, but this too was eventually restored. The president is the commander-in-chief of the United States Armed Forces and appoints its leaders, the secretary of defense and the Joint Chiefs of Staff. The Department of Defense, headquartered at the Pentagon near Washington, D.C., administers five of the six service branches, which are made up of the U.S. Army, Marine Corps, Navy, Air Force, and Space Force. The Coast Guard is administered by the Department of Homeland Security in peacetime and can be transferred to the Department of the Navy in wartime. Total strength of the entire military is about 1.3 million active duty with an additional 400,000 in reserve. The United States spent $997 billion on its military in 2024, which is by far the largest amount of any country, making up 37% of global military spending and accounting for 3.4% of the country's GDP. The U.S. possesses 42% of the world's nuclear weapons—the second-largest stockpile after that of Russia. The U.S. military is widely regarded as the most powerful and advanced in the world. The United States has the third-largest combined armed forces in the world, behind the Chinese People's Liberation Army and Indian Armed Forces. The U.S. military operates about 800 bases and facilities abroad, and maintains deployments greater than 100 active duty personnel in 25 foreign countries. The United States has engaged in over 400 military interventions since its founding in 1776, with over half of these occurring between 1950 and 2019 and 25% occurring in the post-Cold War era. State defense forces (SDFs) are military units that operate under the sole authority of a state government. SDFs are authorized by state and federal law but are under the command of the state's governor. By contrast, the 54 U.S. National Guard organizations[t] fall under the dual control of state or territorial governments and the federal government; their units can also become federalized entities, but SDFs cannot be federalized. The National Guard personnel of a state or territory can be federalized by the president under the National Defense Act Amendments of 1933; this legislation created the Guard and provides for the integration of Army National Guard and Air National Guard units and personnel into the U.S. Army and (since 1947) the U.S. Air Force. The total number of National Guard members is about 430,000, while the estimated combined strength of SDFs is less than 10,000. There are about 18,000 U.S. police agencies from local to national level in the United States. Law in the United States is mainly enforced by local police departments and sheriff departments in their municipal or county jurisdictions. The state police departments have authority in their respective state, and federal agencies such as the Federal Bureau of Investigation (FBI) and the U.S. Marshals Service have national jurisdiction and specialized duties, such as protecting civil rights, national security, enforcing U.S. federal courts' rulings and federal laws, and interstate criminal activity. State courts conduct almost all civil and criminal trials, while federal courts adjudicate the much smaller number of civil and criminal cases that relate to federal law. There is no unified "criminal justice system" in the United States. The American prison system is largely heterogenous, with thousands of relatively independent systems operating across federal, state, local, and tribal levels. In 2025, "these systems hold nearly 2 million people in 1,566 state prisons, 98 federal prisons, 3,116 local jails, 1,277 juvenile correctional facilities, 133 immigration detention facilities, and 80 Indian country jails, as well as in military prisons, civil commitment centers, state psychiatric hospitals, and prisons in the U.S. territories." Despite disparate systems of confinement, four main institutions dominate: federal prisons, state prisons, local jails, and juvenile correctional facilities. Federal prisons are run by the Federal Bureau of Prisons and hold pretrial detainees as well as people who have been convicted of federal crimes. State prisons, run by the department of corrections of each state, hold people sentenced and serving prison time (usually longer than one year) for felony offenses. Local jails are county or municipal facilities that incarcerate defendants prior to trial; they also hold those serving short sentences (typically under a year). Juvenile correctional facilities are operated by local or state governments and serve as longer-term placements for any minor adjudicated as delinquent and ordered by a judge to be confined. In January 2023, the United States had the sixth-highest per capita incarceration rate in the world—531 people per 100,000 inhabitants—and the largest prison and jail population in the world, with more than 1.9 million people incarcerated. An analysis of the World Health Organization Mortality Database from 2010 showed U.S. homicide rates "were 7 times higher than in other high-income countries, driven by a gun homicide rate that was 25 times higher". Economy The U.S. has a highly developed mixed economy that has been the world's largest nominally since about 1890. Its 2024 gross domestic product (GDP)[e] of more than $29 trillion constituted over 25% of nominal global economic output, or 15% at purchasing power parity (PPP). From 1983 to 2008, U.S. real compounded annual GDP growth was 3.3%, compared to a 2.3% weighted average for the rest of the G7. The country ranks first in the world by nominal GDP, second when adjusted for purchasing power parities (PPP), and ninth by PPP-adjusted GDP per capita. In February 2024, the total U.S. federal government debt was $34.4 trillion. Of the world's 500 largest companies by revenue, 138 were headquartered in the U.S. in 2025, the highest number of any country. The U.S. dollar is the currency most used in international transactions and the world's foremost reserve currency, backed by the country's dominant economy, its military, the petrodollar system, its large U.S. treasuries market, and its linked eurodollar. Several countries use it as their official currency, and in others it is the de facto currency. The U.S. has free trade agreements with several countries, including the USMCA. Although the United States has reached a post-industrial level of economic development and is often described as having a service economy, it remains a major industrial power; in 2024, the U.S. manufacturing sector was the world's second-largest by value output after China's. New York City is the world's principal financial center, and its metropolitan area is the world's largest metropolitan economy. The New York Stock Exchange and Nasdaq, both located in New York City, are the world's two largest stock exchanges by market capitalization and trade volume. The United States is at the forefront of technological advancement and innovation in many economic fields, especially in artificial intelligence; electronics and computers; pharmaceuticals; and medical, aerospace and military equipment. The country's economy is fueled by abundant natural resources, a well-developed infrastructure, and high productivity. The largest trading partners of the United States are the European Union, Mexico, Canada, China, Japan, South Korea, the United Kingdom, Vietnam, India, and Taiwan. The United States is the world's largest importer and second-largest exporter.[u] It is by far the world's largest exporter of services. Americans have the highest average household and employee income among OECD member states, and the fourth-highest median household income in 2023, up from sixth-highest in 2013. With personal consumption expenditures of over $18.5 trillion in 2023, the U.S. has a heavily consumer-driven economy and is the world's largest consumer market. The U.S. ranked first in the number of dollar billionaires and millionaires in 2023, with 735 billionaires and nearly 22 million millionaires. Wealth in the United States is highly concentrated; in 2011, the richest 10% of the adult population owned 72% of the country's household wealth, while the bottom 50% owned just 2%. U.S. wealth inequality increased substantially since the late 1980s, and income inequality in the U.S. reached a record high in 2019. In 2024, the country had some of the highest wealth and income inequality levels among OECD countries. Since the 1970s, there has been a decoupling of U.S. wage gains from worker productivity. In 2016, the top fifth of earners took home more than half of all income, giving the U.S. one of the widest income distributions among OECD countries. There were about 771,480 homeless persons in the U.S. in 2024. In 2022, 6.4 million children experienced food insecurity. Feeding America estimates that around one in five, or approximately 13 million, children experience hunger in the U.S. and do not know where or when they will get their next meal. Also in 2022, about 37.9 million people, or 11.5% of the U.S. population, were living in poverty. The United States has a smaller welfare state and redistributes less income through government action than most other high-income countries. It is the only advanced economy that does not guarantee its workers paid vacation nationally and one of a few countries in the world without federal paid family leave as a legal right. The United States has a higher percentage of low-income workers than almost any other developed country, largely because of a weak collective bargaining system and lack of government support for at-risk workers. The United States has been a leader in technological innovation since the late 19th century and scientific research since the mid-20th century. Methods for producing interchangeable parts and the establishment of a machine tool industry enabled the large-scale manufacturing of U.S. consumer products in the late 19th century. By the early 20th century, factory electrification, the introduction of the assembly line, and other labor-saving techniques created the system of mass production. In the 21st century, the United States continues to be one of the world's foremost scientific powers, though China has emerged as a major competitor in many fields. The U.S. has the highest research and development expenditures of any country and ranks ninth as a percentage of GDP. In 2022, the United States was (after China) the country with the second-highest number of published scientific papers. In 2021, the U.S. ranked second (also after China) by the number of patent applications, and third by trademark and industrial design applications (after China and Germany), according to World Intellectual Property Indicators. In 2025 the United States ranked third (after Switzerland and Sweden) in the Global Innovation Index. The United States is considered to be a world leader in the development of artificial intelligence technology. In 2023, the United States was ranked the second most technologically advanced country in the world (after South Korea) by Global Finance magazine. The United States has maintained a space program since the late 1950s, beginning with the establishment of the National Aeronautics and Space Administration (NASA) in 1958. NASA's Apollo program (1961–1972) achieved the first crewed Moon landing with the 1969 Apollo 11 mission; it remains one of the agency's most significant milestones. Other major endeavors by NASA include the Space Shuttle program (1981–2011), the Voyager program (1972–present), the Hubble and James Webb space telescopes (launched in 1990 and 2021, respectively), and the multi-mission Mars Exploration Program (Spirit and Opportunity, Curiosity, and Perseverance). NASA is one of five agencies collaborating on the International Space Station (ISS); U.S. contributions to the ISS include several modules, including Destiny (2001), Harmony (2007), and Tranquility (2010), as well as ongoing logistical and operational support. The United States private sector dominates the global commercial spaceflight industry. Prominent American spaceflight contractors include Blue Origin, Boeing, Lockheed Martin, Northrop Grumman, and SpaceX. NASA programs such as the Commercial Crew Program, Commercial Resupply Services, Commercial Lunar Payload Services, and NextSTEP have facilitated growing private-sector involvement in American spaceflight. In 2023, the United States received approximately 84% of its energy from fossil fuel, and its largest source of energy was petroleum (38%), followed by natural gas (36%), renewable sources (9%), coal (9%), and nuclear power (9%). In 2022, the United States constituted about 4% of the world's population, but consumed around 16% of the world's energy. The U.S. ranks as the second-highest emitter of greenhouse gases behind China. The U.S. is the world's largest producer of nuclear power, generating around 30% of the world's nuclear electricity. It also has the highest number of nuclear power reactors of any country. From 2024, the U.S. plans to triple its nuclear power capacity by 2050. The United States' 4 million miles (6.4 million kilometers) of road network, owned almost entirely by state and local governments, is the longest in the world. The extensive Interstate Highway System that connects all major U.S. cities is funded mostly by the federal government but maintained by state departments of transportation. The system is further extended by state highways and some private toll roads. The U.S. is among the top ten countries with the highest vehicle ownership per capita (850 vehicles per 1,000 people) in 2022. A 2022 study found that 76% of U.S. commuters drive alone and 14% ride a bicycle, including bike owners and users of bike-sharing networks. About 11% use some form of public transportation. Public transportation in the United States is well developed in the largest urban areas, notably New York City, Washington, D.C., Boston, Philadelphia, Chicago, and San Francisco; otherwise, coverage is generally less extensive than in most other developed countries. The U.S. also has many relatively car-dependent localities. Long-distance intercity travel is provided primarily by airlines, but travel by rail is more common along the Northeast Corridor, the only high-speed rail in the U.S. that meets international standards. Amtrak, the country's government-sponsored national passenger rail company, has a relatively sparse network compared to that of Western European countries. Service is concentrated in the Northeast, California, the Midwest, the Pacific Northwest, and Virginia/Southeast. The United States has an extensive air transportation network. U.S. civilian airlines are all privately owned. The three largest airlines in the world, by total number of passengers carried, are U.S.-based; American Airlines became the global leader after its 2013 merger with US Airways. Of the 50 busiest airports in the world, 16 are in the United States, as well as five of the top 10. The world's busiest airport by passenger volume is Hartsfield–Jackson Atlanta International in Atlanta, Georgia. In 2022, most of the 19,969 U.S. airports were owned and operated by local government authorities, and there are also some private airports. Some 5,193 are designated as "public use", including for general aviation. The Transportation Security Administration (TSA) has provided security at most major airports since 2001. The country's rail transport network, the longest in the world at 182,412.3 mi (293,564.2 km), handles mostly freight (in contrast to more passenger-centered rail in Europe). Because they are often privately owned operations, U.S. railroads lag behind those of the rest of the world in terms of electrification. The country's inland waterways are the world's fifth-longest, totaling 25,482 mi (41,009 km). They are used extensively for freight, recreation, and a small amount of passenger traffic. Of the world's 50 busiest container ports, four are located in the United States, with the busiest in the country being the Port of Los Angeles. Demographics The U.S. Census Bureau reported 331,449,281 residents on April 1, 2020,[v] making the United States the third-most-populous country in the world, after India and China. The Census Bureau's official 2025 population estimate was 341,784,857, an increase of 3.1% since the 2020 census. According to the Bureau's U.S. Population Clock, on July 1, 2024, the U.S. population had a net gain of one person every 16 seconds, or about 5400 people per day. In 2023, 51% of Americans age 15 and over were married, 6% were widowed, 10% were divorced, and 34% had never been married. In 2023, the total fertility rate for the U.S. stood at 1.6 children per woman, and, at 23%, it had the world's highest rate of children living in single-parent households in 2019. Most Americans live in the suburbs of major metropolitan areas. The United States has a diverse population; 37 ancestry groups have more than one million members. White Americans with ancestry from Europe, the Middle East, or North Africa form the largest racial and ethnic group at 57.8% of the United States population. Hispanic and Latino Americans form the second-largest group and are 18.7% of the United States population. African Americans constitute the country's third-largest ancestry group and are 12.1% of the total U.S. population. Asian Americans are the country's fourth-largest group, composing 5.9% of the United States population. The country's 3.7 million Native Americans account for about 1%, and some 574 native tribes are recognized by the federal government. In 2024, the median age of the United States population was 39.1 years. While many languages and dialects are spoken in the United States, English is by far the most commonly spoken and written. De facto, English is the official language of the United States, and in 2025, Executive Order 14224 declared English official. However, the U.S. has never had a de jure official language, as Congress has never passed a law to designate English as official for all three federal branches. Some laws, such as U.S. naturalization requirements, nonetheless standardize English. Twenty-eight states and the United States Virgin Islands have laws that designate English as the sole official language; 19 states and the District of Columbia have no official language. Three states and four U.S. territories have recognized local or indigenous languages in addition to English: Hawaii (Hawaiian), Alaska (twenty Native languages),[w] South Dakota (Sioux), American Samoa (Samoan), Puerto Rico (Spanish), Guam (Chamorro), and the Northern Mariana Islands (Carolinian and Chamorro). In total, 169 Native American languages are spoken in the United States. In Puerto Rico, Spanish is more widely spoken than English. According to the American Community Survey (2020), some 245.4 million people in the U.S. age five and older spoke only English at home. About 41.2 million spoke Spanish at home, making it the second most commonly used language. Other languages spoken at home by one million people or more include Chinese (3.40 million), Tagalog (1.71 million), Vietnamese (1.52 million), Arabic (1.39 million), French (1.18 million), Korean (1.07 million), and Russian (1.04 million). German, spoken by 1 million people at home in 2010, fell to 857,000 total speakers in 2020. America's immigrant population is by far the world's largest in absolute terms. In 2022, there were 87.7 million immigrants and U.S.-born children of immigrants in the United States, accounting for nearly 27% of the overall U.S. population. In 2017, out of the U.S. foreign-born population, some 45% (20.7 million) were naturalized citizens, 27% (12.3 million) were lawful permanent residents, 6% (2.2 million) were temporary lawful residents, and 23% (10.5 million) were unauthorized immigrants. In 2019, the top countries of origin for immigrants were Mexico (24% of immigrants), India (6%), China (5%), the Philippines (4.5%), and El Salvador (3%). In fiscal year 2022, over one million immigrants (most of whom entered through family reunification) were granted legal residence. The undocumented immigrant population in the U.S. reached a record high of 14 million in 2023. The First Amendment guarantees the free exercise of religion in the country and forbids Congress from passing laws respecting its establishment. Religious practice is widespread, among the most diverse in the world, and profoundly vibrant. The country has the world's largest Christian population, which includes the fourth-largest population of Catholics. Other notable faiths include Judaism, Buddhism, Hinduism, Islam, New Age, and Native American religions. Religious practice varies significantly by region. "Ceremonial deism" is common in American culture. The overwhelming majority of Americans believe in a higher power or spiritual force, engage in spiritual practices such as prayer, and consider themselves religious or spiritual. In the Southern United States' "Bible Belt", evangelical Protestantism plays a significant role culturally; New England and the Western United States tend to be more secular. Mormonism, a Restorationist movement founded in the U.S. in 1847, is the predominant religion in Utah and a major religion in Idaho. About 82% of Americans live in metropolitan areas, particularly in suburbs; about half of those reside in cities with populations over 50,000. In 2022, 333 incorporated municipalities had populations over 100,000, nine cities had more than one million residents, and four cities—New York City, Los Angeles, Chicago, and Houston—had populations exceeding two million. Many U.S. metropolitan populations are growing rapidly, particularly in the South and West. According to the Centers for Disease Control and Prevention (CDC), average U.S. life expectancy at birth reached 79.0 years in 2024, its highest recorded level. This was an increase of 0.6 years over 2023. The CDC attributed the improvement to a significant fall in the number of fatal drug overdoses in the country, noting that "heart disease continues to be the leading cause of death in the United States, followed by cancer and unintentional injuries." In 2024, life expectancy at birth for American men rose to 76.5 years (+0.7 years compared to 2023), while life expectancy for women was 81.4 years (+0.3 years). Starting in 1998, life expectancy in the U.S. fell behind that of other wealthy industrialized countries, and Americans' "health disadvantage" gap has been increasing ever since. The Commonwealth Fund reported in 2020 that the U.S. had the highest suicide rate among high-income countries. Approximately one-third of the U.S. adult population is obese and another third is overweight. The U.S. healthcare system far outspends that of any other country, measured both in per capita spending and as a percentage of GDP, but attains worse healthcare outcomes when compared to peer countries for reasons that are debated. The United States is the only developed country without a system of universal healthcare, and a significant proportion of the population that does not carry health insurance. Government-funded healthcare coverage for the poor (Medicaid) and for those age 65 and older (Medicare) is available to Americans who meet the programs' income or age qualifications. In 2010, then-President Obama passed the Patient Protection and Affordable Care Act.[x] Abortion in the United States is not federally protected, and is illegal or restricted in 17 states. American primary and secondary education, known in the U.S. as K–12 ("kindergarten through 12th grade"), is decentralized. School systems are operated by state, territorial, and sometimes municipal governments and regulated by the U.S. Department of Education. In general, children are required to attend school or an approved homeschool from the age of five or six (kindergarten or first grade) until they are 18 years old. This often brings students through the 12th grade, the final year of a U.S. high school, but some states and territories allow them to leave school earlier, at age 16 or 17. The U.S. spends more on education per student than any other country, an average of $18,614 per year per public elementary and secondary school student in 2020–2021. Among Americans age 25 and older, 92.2% graduated from high school, 62.7% attended some college, 37.7% earned a bachelor's degree, and 14.2% earned a graduate degree. The U.S. literacy rate is near-universal. The U.S. has produced the most Nobel Prize winners of any country, with 411 (having won 413 awards). U.S. tertiary or higher education has earned a global reputation. Many of the world's top universities, as listed by various ranking organizations, are in the United States, including 19 of the top 25. American higher education is dominated by state university systems, although the country's many private universities and colleges enroll about 20% of all American students. Local community colleges generally offer open admissions, lower tuition, and coursework leading to a two-year associate degree or a non-degree certificate. As for public expenditures on higher education, the U.S. spends more per student than the OECD average, and Americans spend more than all nations in combined public and private spending. Colleges and universities directly funded by the federal government do not charge tuition and are limited to military personnel and government employees, including: the U.S. service academies, the Naval Postgraduate School, and military staff colleges. Despite some student loan forgiveness programs in place, student loan debt increased by 102% between 2010 and 2020, and exceeded $1.7 trillion in 2022. Culture and society The United States is home to a wide variety of ethnic groups, traditions, and customs. The country has been described as having the values of individualism and personal autonomy, as well as a strong work ethic and competitiveness. Voluntary altruism towards others also plays a major role; according to a 2016 study by the Charities Aid Foundation, Americans donated 1.44% of total GDP to charity—the highest rate in the world by a large margin. Americans have traditionally been characterized by a unifying political belief in an "American Creed" emphasizing consent of the governed, liberty, equality under the law, democracy, social equality, property rights, and a preference for limited government. The U.S. has acquired significant hard and soft power through its diplomatic influence, economic power, military alliances, and cultural exports such as American movies, music, video games, sports, and food. The influence that the United States exerts on other countries through soft power is referred to as Americanization. Nearly all present Americans or their ancestors came from Europe, Africa, or Asia (the "Old World") within the past five centuries. Mainstream American culture is a Western culture largely derived from the traditions of European immigrants with influences from many other sources, such as traditions brought by slaves from Africa. More recent immigration from Asia and especially Latin America has added to a cultural mix that has been described as a homogenizing melting pot, and a heterogeneous salad bowl, with immigrants contributing to, and often assimilating into, mainstream American culture. Under the First Amendment to the Constitution, the United States is considered to have the strongest protections of free speech of any country. Flag desecration, hate speech, blasphemy, and lese majesty are all forms of protected expression. A 2016 Pew Research Center poll found that Americans were the most supportive of free expression of any polity measured. Additionally, they are the "most supportive of freedom of the press and the right to use the Internet without government censorship". The U.S. is a socially progressive country with permissive attitudes surrounding human sexuality. LGBTQ rights in the United States are among the most advanced by global standards. The American Dream, or the perception that Americans enjoy high levels of social mobility, plays a key role in attracting immigrants. Whether this perception is accurate has been a topic of debate. While mainstream culture holds that the United States is a classless society, scholars identify significant differences between the country's social classes, affecting socialization, language, and values. Americans tend to greatly value socioeconomic achievement, but being ordinary or average is promoted by some as a noble condition as well. The National Foundation on the Arts and the Humanities is an agency of the United States federal government that was established in 1965 with the purpose to "develop and promote a broadly conceived national policy of support for the humanities and the arts in the United States, and for institutions which preserve the cultural heritage of the United States." It is composed of four sub-agencies: Colonial American authors were influenced by John Locke and other Enlightenment philosophers. The American Revolutionary Period (1765–1783) is notable for the political writings of Benjamin Franklin, Alexander Hamilton, Thomas Paine, and Thomas Jefferson. Shortly before and after the Revolutionary War, the newspaper rose to prominence, filling a demand for anti-British national literature. An early novel is William Hill Brown's The Power of Sympathy, published in 1791. Writer and critic John Neal in the early- to mid-19th century helped advance America toward a unique literature and culture by criticizing predecessors such as Washington Irving for imitating their British counterparts, and by influencing writers such as Edgar Allan Poe, who took American poetry and short fiction in new directions. Ralph Waldo Emerson and Margaret Fuller pioneered the influential Transcendentalism movement; Henry David Thoreau, author of Walden, was influenced by this movement. The conflict surrounding abolitionism inspired writers, like Harriet Beecher Stowe, and authors of slave narratives, such as Frederick Douglass. Nathaniel Hawthorne's The Scarlet Letter (1850) explored the dark side of American history, as did Herman Melville's Moby-Dick (1851). Major American poets of the 19th century American Renaissance include Walt Whitman, Melville, and Emily Dickinson. Mark Twain was the first major American writer to be born in the West. Henry James achieved international recognition with novels like The Portrait of a Lady (1881). As literacy rates rose, periodicals published more stories centered around industrial workers, women, and the rural poor. Naturalism, regionalism, and realism were the major literary movements of the period. While modernism generally took on an international character, modernist authors working within the United States more often rooted their work in specific regions, peoples, and cultures. Following the Great Migration to northern cities, African-American and black West Indian authors of the Harlem Renaissance developed an independent tradition of literature that rebuked a history of inequality and celebrated black culture. An important cultural export during the Jazz Age, these writings were a key influence on Négritude, a philosophy emerging in the 1930s among francophone writers of the African diaspora. In the 1950s, an ideal of homogeneity led many authors to attempt to write the Great American Novel, while the Beat Generation rejected this conformity, using styles that elevated the impact of the spoken word over mechanics to describe drug use, sexuality, and the failings of society. Contemporary literature is more pluralistic than in previous eras, with the closest thing to a unifying feature being a trend toward self-conscious experiments with language. Twelve American laureates have won the Nobel Prize in Literature. Media in the United States is broadly uncensored, with the First Amendment providing significant protections, as reiterated in New York Times Co. v. United States. The four major broadcasters in the U.S. are the National Broadcasting Company (NBC), Columbia Broadcasting System (CBS), American Broadcasting Company (ABC), and Fox Broadcasting Company (Fox). The four major broadcast television networks are all commercial entities. The U.S. cable television system offers hundreds of channels catering to a variety of niches. In 2021, about 83% of Americans over age 12 listened to broadcast radio, while about 40% listened to podcasts. In the prior year, there were 15,460 licensed full-power radio stations in the U.S. according to the Federal Communications Commission (FCC). Much of the public radio broadcasting is supplied by National Public Radio (NPR), incorporated in February 1970 under the Public Broadcasting Act of 1967. U.S. newspapers with a global reach and reputation include The Wall Street Journal, The New York Times, The Washington Post, and USA Today. About 800 publications are produced in Spanish. With few exceptions, newspapers are privately owned, either by large chains such as Gannett or McClatchy, which own dozens or even hundreds of newspapers; by small chains that own a handful of papers; or, in an increasingly rare situation, by individuals or families. Major cities often have alternative newspapers to complement the mainstream daily papers, such as The Village Voice in New York City and LA Weekly in Los Angeles. The five most-visited websites in the world are Google, YouTube, Facebook, Instagram, and ChatGPT—all of them American-owned. Other popular platforms used include X (formerly Twitter) and Amazon. In 2025, the U.S. was the world's second-largest video game market by revenue (after China). In 2015, the U.S. video game industry consisted of 2,457 companies that employed around 220,000 jobs and generated $30.4 billion in revenue. There are 444 game publishers, developers, and hardware companies in California alone. According to the Game Developers Conference (GDC), the U.S. is the top location for video game development, with 58% of the world's game developers based there in 2025. The United States is well known for its theater. Mainstream theater in the United States derives from the old European theatrical tradition and has been heavily influenced by the British theater. By the middle of the 19th century, America had created new distinct dramatic forms in the Tom Shows, the showboat theater and the minstrel show. The central hub of the American theater scene is the Theater District in Manhattan, with its divisions of Broadway, off-Broadway, and off-off-Broadway. Many movie and television celebrities have gotten their big break working in New York productions. Outside New York City, many cities have professional regional or resident theater companies that produce their own seasons. The biggest-budget theatrical productions are musicals. U.S. theater has an active community theater culture. The Tony Awards recognizes excellence in live Broadway theater and are presented at an annual ceremony in Manhattan. The awards are given for Broadway productions and performances. One is also given for regional theater. Several discretionary non-competitive awards are given as well, including a Special Tony Award, the Tony Honors for Excellence in Theatre, and the Isabelle Stevenson Award. Folk art in colonial America grew out of artisanal craftsmanship in communities that allowed commonly trained people to individually express themselves. It was distinct from Europe's tradition of high art, which was less accessible and generally less relevant to early American settlers. Cultural movements in art and craftsmanship in colonial America generally lagged behind those of Western Europe. For example, the prevailing medieval style of woodworking and primitive sculpture became integral to early American folk art, despite the emergence of Renaissance styles in England in the late 16th and early 17th centuries. The new English styles would have been early enough to make a considerable impact on American folk art, but American styles and forms had already been firmly adopted. Not only did styles change slowly in early America, but there was a tendency for rural artisans there to continue their traditional forms longer than their urban counterparts did—and far longer than those in Western Europe. The Hudson River School was a mid-19th-century movement in the visual arts tradition of European naturalism. The 1913 Armory Show in New York City, an exhibition of European modernist art, shocked the public and transformed the U.S. art scene. American Realism and American Regionalism sought to reflect and give America new ways of looking at itself. Georgia O'Keeffe, Marsden Hartley, and others experimented with new and individualistic styles, which would become known as American modernism. Major artistic movements such as the abstract expressionism of Jackson Pollock and Willem de Kooning and the pop art of Andy Warhol and Roy Lichtenstein developed largely in the United States. Major photographers include Alfred Stieglitz, Edward Steichen, Dorothea Lange, Edward Weston, James Van Der Zee, Ansel Adams, and Gordon Parks. The tide of modernism and then postmodernism has brought global fame to American architects, including Frank Lloyd Wright, Philip Johnson, and Frank Gehry. The Metropolitan Museum of Art in Manhattan is the largest art museum in the United States and the fourth-largest in the world. American folk music encompasses numerous music genres, variously known as traditional music, traditional folk music, contemporary folk music, or roots music. Many traditional songs have been sung within the same family or folk group for generations, and sometimes trace back to such origins as the British Isles, mainland Europe, or Africa. The rhythmic and lyrical styles of African-American music in particular have influenced American music. Banjos were brought to America through the slave trade. Minstrel shows incorporating the instrument into their acts led to its increased popularity and widespread production in the 19th century. The electric guitar, first invented in the 1930s, and mass-produced by the 1940s, had an enormous influence on popular music, in particular due to the development of rock and roll. The synthesizer, turntablism, and electronic music were also largely developed in the U.S. Elements from folk idioms such as the blues and old-time music were adopted and transformed into popular genres with global audiences. Jazz grew from blues and ragtime in the early 20th century, developing from the innovations and recordings of composers such as W.C. Handy and Jelly Roll Morton. Louis Armstrong and Duke Ellington increased its popularity early in the 20th century. Country music developed in the 1920s, bluegrass and rhythm and blues in the 1940s, and rock and roll in the 1950s. In the 1960s, Bob Dylan emerged from the folk revival to become one of the country's most celebrated songwriters. The musical forms of punk and hip hop both originated in the United States in the 1970s. The United States has the world's largest music market, with a total retail value of $15.9 billion in 2022. Most of the world's major record companies are based in the U.S.; they are represented by the Recording Industry Association of America (RIAA). Mid-20th-century American pop stars, such as Frank Sinatra and Elvis Presley, became global celebrities and best-selling music artists, as have artists of the late 20th century, such as Michael Jackson, Madonna, Whitney Houston, and Mariah Carey, and of the early 21st century, such as Eminem, Britney Spears, Lady Gaga, Katy Perry, Taylor Swift and Beyoncé. The United States has the world's largest apparel market by revenue. Apart from professional business attire, American fashion is eclectic and predominantly informal. Americans' diverse cultural roots are reflected in their clothing; however, sneakers, jeans, T-shirts, and baseball caps are emblematic of American styles. New York, with its Fashion Week, is considered to be one of the "Big Four" global fashion capitals, along with Paris, Milan, and London. A study demonstrated that general proximity to Manhattan's Garment District has been synonymous with American fashion since its inception in the early 20th century. A number of well-known designer labels, among them Tommy Hilfiger, Ralph Lauren, Tom Ford and Calvin Klein, are headquartered in Manhattan. Labels cater to niche markets, such as preteens. New York Fashion Week is one of the most influential fashion shows in the world, and is held twice each year in Manhattan; the annual Met Gala, also in Manhattan, has been called the fashion world's "biggest night". The U.S. film industry has a worldwide influence and following. Hollywood, a district in central Los Angeles, the nation's second-most populous city, is also metonymous for the American filmmaking industry. The major film studios of the United States are the primary source of the most commercially successful movies selling the most tickets in the world. Largely centered in the New York City region from its beginnings in the late 19th century through the first decades of the 20th century, the U.S. film industry has since been primarily based in and around Hollywood. Nonetheless, American film companies have been subject to the forces of globalization in the 21st century, and an increasing number of films are made elsewhere. The Academy Awards, popularly known as "the Oscars", have been held annually by the Academy of Motion Picture Arts and Sciences since 1929, and the Golden Globe Awards have been held annually since January 1944. The industry peaked in what is commonly referred to as the "Golden Age of Hollywood", from the early sound period until the early 1960s, with screen actors such as John Wayne and Marilyn Monroe becoming iconic figures. In the 1970s, "New Hollywood", or the "Hollywood Renaissance", was defined by grittier films influenced by French and Italian realist pictures of the post-war period. The 21st century has been marked by the rise of American streaming platforms, which came to rival traditional cinema. Early settlers were introduced by Native Americans to foods such as turkey, sweet potatoes, corn, squash, and maple syrup. Of the most enduring and pervasive examples are variations of the native dish called succotash. Early settlers and later immigrants combined these with foods they were familiar with, such as wheat flour, beef, and milk, to create a distinctive American cuisine. New World crops, especially pumpkin, corn, potatoes, and turkey as the main course are part of a shared national menu on Thanksgiving, when many Americans prepare or purchase traditional dishes to celebrate the occasion. Characteristic American dishes such as apple pie, fried chicken, doughnuts, french fries, macaroni and cheese, ice cream, hamburgers, hot dogs, and American pizza derive from the recipes of various immigrant groups. Mexican dishes such as burritos and tacos preexisted the United States in areas later annexed from Mexico, and adaptations of Chinese cuisine as well as pasta dishes freely adapted from Italian sources are all widely consumed. American chefs have had a significant impact on society both domestically and internationally. In 1946, the Culinary Institute of America was founded by Katharine Angell and Frances Roth. This would become the United States' most prestigious culinary school, where many of the most talented American chefs would study prior to successful careers. The United States restaurant industry was projected at $899 billion in sales for 2020, and employed more than 15 million people, representing 10% of the nation's workforce directly. It is the country's second-largest private employer and the third-largest employer overall. The United States is home to over 220 Michelin star-rated restaurants, 70 of which are in New York City. Wine has been produced in what is now the United States since the 1500s, with the first widespread production beginning in what is now New Mexico in 1628. In the modern U.S., wine production is undertaken in all fifty states, with California producing 84 percent of all U.S. wine. With more than 1,100,000 acres (4,500 km2) under vine, the United States is the fourth-largest wine-producing country in the world, after Italy, Spain, and France. The classic American diner, a casual restaurant type originally intended for the working class, emerged during the 19th century from converted railroad dining cars made stationary. The diner soon evolved into purpose-built structures whose number expanded greatly in the 20th century. The American fast-food industry developed alongside the nation's car culture. American restaurants developed the drive-in format in the 1920s, which they began to replace with the drive-through format by the 1940s. American fast-food restaurant chains, such as McDonald's, Burger King, Chick-fil-A, Kentucky Fried Chicken, Dunkin' Donuts and many others, have numerous outlets around the world. The most popular spectator sports in the U.S. are American football, basketball, baseball, soccer, and ice hockey. Their premier leagues are, respectively, the National Football League, the National Basketball Association, Major League Baseball, Major League Soccer, and the National Hockey League, All these leagues enjoy wide-ranging domestic media coverage and, except for the MLS, all are considered the preeminent leagues in their respective sports in the world. While most major U.S. sports such as baseball and American football have evolved out of European practices, basketball, volleyball, skateboarding, and snowboarding are American inventions, many of which have become popular worldwide. Lacrosse and surfing arose from Native American and Native Hawaiian activities that predate European contact. The market for professional sports in the United States was approximately $69 billion in July 2013, roughly 50% larger than that of Europe, the Middle East, and Africa combined. American football is by several measures the most popular spectator sport in the United States. Although American football does not have a substantial following in other nations, the NFL does have the highest average attendance (67,254) of any professional sports league in the world. In the year 2024, the NFL generated over $23 billion, making them the most valued professional sports league in the United States and the world. Baseball has been regarded as the U.S. "national sport" since the late 19th century. The most-watched individual sports in the U.S. are golf and auto racing, particularly NASCAR and IndyCar. On the collegiate level, earnings for the member institutions exceed $1 billion annually, and college football and basketball attract large audiences, as the NCAA March Madness tournament and the College Football Playoff are some of the most watched national sporting events. In the U.S., the intercollegiate sports level serves as the main feeder system for professional and Olympic sports, with significant exceptions such as Minor League Baseball. This differs greatly from practices in nearly all other countries, where publicly and privately funded sports organizations serve this function. Eight Olympic Games have taken place in the United States. The 1904 Summer Olympics in St. Louis, Missouri, were the first-ever Olympic Games held outside of Europe. The Olympic Games will be held in the U.S. for a ninth time when Los Angeles hosts the 2028 Summer Olympics. U.S. athletes have won a total of 2,968 medals (1,179 gold) at the Olympic Games, the most of any country. In other international competition, the United States is the home of a number of prestigious events, including the America's Cup, World Baseball Classic, the U.S. Open, and the Masters Tournament. The U.S. men's national soccer team has qualified for eleven World Cups, while the women's national team has won the FIFA Women's World Cup and Olympic soccer tournament four and five times, respectively. The 1999 FIFA Women's World Cup was hosted by the United States. Its final match was attended by 90,185, setting the world record for largest women's sporting event crowd at the time. The United States hosted the 1994 FIFA World Cup and will co-host, along with Canada and Mexico, the 2026 FIFA World Cup. See also Notes References This article incorporates text from a free content work. Licensed under CC BY-SA IGO 3.0 (license statement/permission). Text taken from World Food and Agriculture – Statistical Yearbook 2023, FAO, FAO. External links 40°N 100°W / 40°N 100°W / 40; -100 (United States of America)
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[SOURCE: https://www.theverge.com/news/882241/microsoft-phil-spencer-xbox-leaving-retirement] \| [TOKENS: 2979]
GamingCloseGamingPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All GamingBusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessNewsCloseNewsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All NewsXbox chief Phil Spencer is leaving MicrosoftXbox president Sarah Bond is also leaving Microsoft.Xbox president Sarah Bond is also leaving Microsoft.by Tom WarrenCloseTom WarrenSenior EditorPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Tom WarrenFeb 20, 2026, 8:30 PM UTCLinkShareGiftImage: Laura Normand / The VergePart OfXbox shakeup: Phil Spencer and Sarah Bond are leaving Microsoftsee all updates Tom WarrenCloseTom WarrenPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Tom Warren is a senior editor and author of Notepad, who has been covering all things Microsoft, PC, and tech for over 20 years.Xbox chief Phil Spencer is leaving Microsoft after nearly 40 years at the software giant. Xbox president Sarah Bond is also leaving Microsoft, in what is a major shake-up to the management of Xbox and Microsoft’s gaming efforts. Asha Sharma, currently president of CoreAI product, is taking over as CEO of Microsoft Gaming.Microsoft CEO Satya Nadella announced Phil Spencer’s retirement in a memo to all Microsoft employees today. “Last year, Phil Spencer made the decision to retire from the company, and since then we’ve been talking about succession planning,” says Nadella. “I want to thank Phil for his extraordinary leadership and partnership. Over 38 years at Microsoft, including 12 years leading Gaming, Phil helped transform what we do and how we do it.”Asha Sharma is taking over from Phil Spencer as the new Microsoft Gaming CEO. Sharma is currently the president of CoreAI product at Microsoft, and has been working closely on Microsoft’s AI platform efforts since she rejoined Microsoft in 2024. Spencer will remain in an advisory role through the summer to support the transition.RelatedRead Xbox chief Phil Spencer’s memo about leaving MicrosoftRead Microsoft gaming CEO Asha Sharma’s first memo on the future of XboxWhile Sharma isn’t a gamer like Spencer, she does have some consumer experience that could certainly help with leading a division as big as Microsoft Gaming. Sharma left a marketing role at Microsoft in 2013 and has worked at Meta as VP of product and engineering and Instacart as chief operating officer before heading back to Microsoft in 2024.Nadella says he’s “long on gaming and its role at the center of our consumer ambition,” and believes Sharma has “deep experience building and growing platforms, aligning business models to long-term value, and operating at global scale, which will be critical in leading our gaming business into its next era of growth.”Sharma now has three commitments for the future of gaming at Microsoft: great games, the return of Xbox, and the future of play. “We will recommit to our core Xbox fans and players, those who have invested with us for the past 25 years, and to the developers who build the expansive universes and experiences that are embraced by players across the world,” says Sharma in an internal memo. “We will celebrate our roots with a renewed commitment to Xbox starting with console which has shaped who we are. It connects us to the players and fans who invest in Xbox, and to the developers who build ambitious experiences for it.”In a memo to Xbox employees, Spencer reveals that he made the decision to retire from Microsoft in the fall of 2025, just months after rumors circulated online about Spencer’s potential retirement. Microsoft said in July that Spencer was “not retiring anytime soon.””Last fall, I shared with Satya that I was thinking about stepping back and starting the next chapter of my life,” says Spencer. “From that moment, we aligned on approaching this transition with intention, ensuring stability, and strengthening the foundation we’ve built. Xbox has always been more than a business. It’s a vibrant community of players, creators, and teams who care deeply about what we build and how we build it. And it deserves a thoughtful, deliberate plan for the road ahead.”As part of the road ahead for Xbox, president Sarah Bond is also leaving Microsoft to “begin a new chapter,” according to Spencer. “Sarah has been instrumental during a defining period for Xbox, shaping our platform strategy, expanding Game Pass and cloud gaming, supporting new hardware launches, and guiding some of the most significant moments in our history,” says Spencer.Microsoft is also promoting Matt Booty to EVP and chief content officer, after previously promoting him to an expanded president of game content and studios position in 2023. “I read Phil’s note with much gratitude,” says Booty in an internal memo to Microsoft’s gaming employees. “He has been a steady champion for game creators and our studio teams, and I’ve learned so much from his leadership over the years. All our games have benefited from his foundational support.”You can read Phil Spencer’s full retirement memo here.Spencer has been at Microsoft since he first joined as an intern in 1988. In his early career at Microsoft he worked on Encarta, Microsoft Money, and Microsoft Works. Spencer joined the Xbox division in 2001, and became the general manager of Microsoft Studios in 2008. He then became the leader of the Xbox division in 2014, overseeing the launch of the Xbox Series X / S and Microsoft’s Xbox Game Pass push.Spencer has also been at the center of Microsoft’s major gaming acquisitions, including Minecraft maker Mojang, Activision Blizzard, and ZeniMax Media.“When I walked through Microsoft’s doors as an intern in June of 1988, I could never have imagined the products I’d help build, the players and customers we’d serve, or the extraordinary teams I’d be lucky enough to join,” says Spencer. “It’s been an epic ride and truly the privilege of a lifetime.”Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.Tom WarrenCloseTom WarrenSenior EditorPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Tom WarrenBusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessGamingCloseGamingPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All GamingMicrosoftCloseMicrosoftPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All MicrosoftNewsCloseNewsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All NewsTechCloseTechPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All TechXboxCloseXboxPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All XboxMore in: Xbox shakeup: Phil Spencer and Sarah Bond are leaving MicrosoftRead Xbox president Sarah Bond’s memo about leaving Microsoft.Richard Lawler12:15 AM UTCMicrosoft says today’s Xbox shake-up doesn’t mean game studio layoffsSean HollisterFeb 20Xslop?Andrew WebsterFeb 20Most PopularMost PopularXbox chief Phil Spencer is leaving MicrosoftRead Microsoft gaming CEO Asha Sharma’s first memo on the future of XboxThe RAM shortage is coming for everything you care aboutAmazon blames human employees for an AI coding agent’s mistakeWill Stancil, man of the people or just an annoying guy?The Verge DailyA free daily digest of the news that matters most.Email (required)Sign UpBy submitting your email, you agree to our Terms and Privacy Notice. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.Advertiser Content FromThis is the title for the native ad Posts from this topic will be added to your daily email digest and your homepage feed. See All Gaming Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All News Xbox chief Phil Spencer is leaving Microsoft Xbox president Sarah Bond is also leaving Microsoft. Xbox president Sarah Bond is also leaving Microsoft. Posts from this author will be added to your daily email digest and your homepage feed. See All by Tom Warren Posts from this author will be added to your daily email digest and your homepage feed. See All by Tom Warren Xbox chief Phil Spencer is leaving Microsoft after nearly 40 years at the software giant. Xbox president Sarah Bond is also leaving Microsoft, in what is a major shake-up to the management of Xbox and Microsoft’s gaming efforts. Asha Sharma, currently president of CoreAI product, is taking over as CEO of Microsoft Gaming. Microsoft CEO Satya Nadella announced Phil Spencer’s retirement in a memo to all Microsoft employees today. “Last year, Phil Spencer made the decision to retire from the company, and since then we’ve been talking about succession planning,” says Nadella. “I want to thank Phil for his extraordinary leadership and partnership. Over 38 years at Microsoft, including 12 years leading Gaming, Phil helped transform what we do and how we do it.” Asha Sharma is taking over from Phil Spencer as the new Microsoft Gaming CEO. Sharma is currently the president of CoreAI product at Microsoft, and has been working closely on Microsoft’s AI platform efforts since she rejoined Microsoft in 2024. Spencer will remain in an advisory role through the summer to support the transition. While Sharma isn’t a gamer like Spencer, she does have some consumer experience that could certainly help with leading a division as big as Microsoft Gaming. Sharma left a marketing role at Microsoft in 2013 and has worked at Meta as VP of product and engineering and Instacart as chief operating officer before heading back to Microsoft in 2024. Nadella says he’s “long on gaming and its role at the center of our consumer ambition,” and believes Sharma has “deep experience building and growing platforms, aligning business models to long-term value, and operating at global scale, which will be critical in leading our gaming business into its next era of growth.” Sharma now has three commitments for the future of gaming at Microsoft: great games, the return of Xbox, and the future of play. “We will recommit to our core Xbox fans and players, those who have invested with us for the past 25 years, and to the developers who build the expansive universes and experiences that are embraced by players across the world,” says Sharma in an internal memo. “We will celebrate our roots with a renewed commitment to Xbox starting with console which has shaped who we are. It connects us to the players and fans who invest in Xbox, and to the developers who build ambitious experiences for it.” In a memo to Xbox employees, Spencer reveals that he made the decision to retire from Microsoft in the fall of 2025, just months after rumors circulated online about Spencer’s potential retirement. Microsoft said in July that Spencer was “not retiring anytime soon.” ”Last fall, I shared with Satya that I was thinking about stepping back and starting the next chapter of my life,” says Spencer. “From that moment, we aligned on approaching this transition with intention, ensuring stability, and strengthening the foundation we’ve built. Xbox has always been more than a business. It’s a vibrant community of players, creators, and teams who care deeply about what we build and how we build it. And it deserves a thoughtful, deliberate plan for the road ahead.” As part of the road ahead for Xbox, president Sarah Bond is also leaving Microsoft to “begin a new chapter,” according to Spencer. “Sarah has been instrumental during a defining period for Xbox, shaping our platform strategy, expanding Game Pass and cloud gaming, supporting new hardware launches, and guiding some of the most significant moments in our history,” says Spencer. Microsoft is also promoting Matt Booty to EVP and chief content officer, after previously promoting him to an expanded president of game content and studios position in 2023. “I read Phil’s note with much gratitude,” says Booty in an internal memo to Microsoft’s gaming employees. “He has been a steady champion for game creators and our studio teams, and I’ve learned so much from his leadership over the years. All our games have benefited from his foundational support.” You can read Phil Spencer’s full retirement memo here. Spencer has been at Microsoft since he first joined as an intern in 1988. In his early career at Microsoft he worked on Encarta, Microsoft Money, and Microsoft Works. Spencer joined the Xbox division in 2001, and became the general manager of Microsoft Studios in 2008. He then became the leader of the Xbox division in 2014, overseeing the launch of the Xbox Series X / S and Microsoft’s Xbox Game Pass push. Spencer has also been at the center of Microsoft’s major gaming acquisitions, including Minecraft maker Mojang, Activision Blizzard, and ZeniMax Media. “When I walked through Microsoft’s doors as an intern in June of 1988, I could never have imagined the products I’d help build, the players and customers we’d serve, or the extraordinary teams I’d be lucky enough to join,” says Spencer. “It’s been an epic ride and truly the privilege of a lifetime.” Posts from this author will be added to your daily email digest and your homepage feed. See All by Tom Warren Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All Gaming Posts from this topic will be added to your daily email digest and your homepage feed. See All Microsoft Posts from this topic will be added to your daily email digest and your homepage feed. See All News Posts from this topic will be added to your daily email digest and your homepage feed. See All Tech Posts from this topic will be added to your daily email digest and your homepage feed. See All Xbox More in: Xbox shakeup: Phil Spencer and Sarah Bond are leaving Microsoft Most Popular The Verge Daily A free daily digest of the news that matters most. This is the title for the native ad More in Gaming This is the title for the native ad Top Stories © 2026 Vox Media, LLC. All Rights Reserved
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[SOURCE: https://www.theverge.com/news/882241/microsoft-phil-spencer-xbox-leaving-retirement] \| [TOKENS: 2979]
GamingCloseGamingPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All GamingBusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessNewsCloseNewsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All NewsXbox chief Phil Spencer is leaving MicrosoftXbox president Sarah Bond is also leaving Microsoft.Xbox president Sarah Bond is also leaving Microsoft.by Tom WarrenCloseTom WarrenSenior EditorPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Tom WarrenFeb 20, 2026, 8:30 PM UTCLinkShareGiftImage: Laura Normand / The VergePart OfXbox shakeup: Phil Spencer and Sarah Bond are leaving Microsoftsee all updates Tom WarrenCloseTom WarrenPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Tom Warren is a senior editor and author of Notepad, who has been covering all things Microsoft, PC, and tech for over 20 years.Xbox chief Phil Spencer is leaving Microsoft after nearly 40 years at the software giant. Xbox president Sarah Bond is also leaving Microsoft, in what is a major shake-up to the management of Xbox and Microsoft’s gaming efforts. Asha Sharma, currently president of CoreAI product, is taking over as CEO of Microsoft Gaming.Microsoft CEO Satya Nadella announced Phil Spencer’s retirement in a memo to all Microsoft employees today. “Last year, Phil Spencer made the decision to retire from the company, and since then we’ve been talking about succession planning,” says Nadella. “I want to thank Phil for his extraordinary leadership and partnership. Over 38 years at Microsoft, including 12 years leading Gaming, Phil helped transform what we do and how we do it.”Asha Sharma is taking over from Phil Spencer as the new Microsoft Gaming CEO. Sharma is currently the president of CoreAI product at Microsoft, and has been working closely on Microsoft’s AI platform efforts since she rejoined Microsoft in 2024. Spencer will remain in an advisory role through the summer to support the transition.RelatedRead Xbox chief Phil Spencer’s memo about leaving MicrosoftRead Microsoft gaming CEO Asha Sharma’s first memo on the future of XboxWhile Sharma isn’t a gamer like Spencer, she does have some consumer experience that could certainly help with leading a division as big as Microsoft Gaming. Sharma left a marketing role at Microsoft in 2013 and has worked at Meta as VP of product and engineering and Instacart as chief operating officer before heading back to Microsoft in 2024.Nadella says he’s “long on gaming and its role at the center of our consumer ambition,” and believes Sharma has “deep experience building and growing platforms, aligning business models to long-term value, and operating at global scale, which will be critical in leading our gaming business into its next era of growth.”Sharma now has three commitments for the future of gaming at Microsoft: great games, the return of Xbox, and the future of play. “We will recommit to our core Xbox fans and players, those who have invested with us for the past 25 years, and to the developers who build the expansive universes and experiences that are embraced by players across the world,” says Sharma in an internal memo. “We will celebrate our roots with a renewed commitment to Xbox starting with console which has shaped who we are. It connects us to the players and fans who invest in Xbox, and to the developers who build ambitious experiences for it.”In a memo to Xbox employees, Spencer reveals that he made the decision to retire from Microsoft in the fall of 2025, just months after rumors circulated online about Spencer’s potential retirement. Microsoft said in July that Spencer was “not retiring anytime soon.””Last fall, I shared with Satya that I was thinking about stepping back and starting the next chapter of my life,” says Spencer. “From that moment, we aligned on approaching this transition with intention, ensuring stability, and strengthening the foundation we’ve built. Xbox has always been more than a business. It’s a vibrant community of players, creators, and teams who care deeply about what we build and how we build it. And it deserves a thoughtful, deliberate plan for the road ahead.”As part of the road ahead for Xbox, president Sarah Bond is also leaving Microsoft to “begin a new chapter,” according to Spencer. “Sarah has been instrumental during a defining period for Xbox, shaping our platform strategy, expanding Game Pass and cloud gaming, supporting new hardware launches, and guiding some of the most significant moments in our history,” says Spencer.Microsoft is also promoting Matt Booty to EVP and chief content officer, after previously promoting him to an expanded president of game content and studios position in 2023. “I read Phil’s note with much gratitude,” says Booty in an internal memo to Microsoft’s gaming employees. “He has been a steady champion for game creators and our studio teams, and I’ve learned so much from his leadership over the years. All our games have benefited from his foundational support.”You can read Phil Spencer’s full retirement memo here.Spencer has been at Microsoft since he first joined as an intern in 1988. In his early career at Microsoft he worked on Encarta, Microsoft Money, and Microsoft Works. Spencer joined the Xbox division in 2001, and became the general manager of Microsoft Studios in 2008. He then became the leader of the Xbox division in 2014, overseeing the launch of the Xbox Series X / S and Microsoft’s Xbox Game Pass push.Spencer has also been at the center of Microsoft’s major gaming acquisitions, including Minecraft maker Mojang, Activision Blizzard, and ZeniMax Media.“When I walked through Microsoft’s doors as an intern in June of 1988, I could never have imagined the products I’d help build, the players and customers we’d serve, or the extraordinary teams I’d be lucky enough to join,” says Spencer. “It’s been an epic ride and truly the privilege of a lifetime.”Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.Tom WarrenCloseTom WarrenSenior EditorPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Tom WarrenBusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessGamingCloseGamingPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All GamingMicrosoftCloseMicrosoftPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All MicrosoftNewsCloseNewsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All NewsTechCloseTechPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All TechXboxCloseXboxPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All XboxMore in: Xbox shakeup: Phil Spencer and Sarah Bond are leaving MicrosoftRead Xbox president Sarah Bond’s memo about leaving Microsoft.Richard Lawler12:15 AM UTCMicrosoft says today’s Xbox shake-up doesn’t mean game studio layoffsSean HollisterFeb 20Xslop?Andrew WebsterFeb 20Most PopularMost PopularXbox chief Phil Spencer is leaving MicrosoftRead Microsoft gaming CEO Asha Sharma’s first memo on the future of XboxThe RAM shortage is coming for everything you care aboutAmazon blames human employees for an AI coding agent’s mistakeWill Stancil, man of the people or just an annoying guy?The Verge DailyA free daily digest of the news that matters most.Email (required)Sign UpBy submitting your email, you agree to our Terms and Privacy Notice. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.Advertiser Content FromThis is the title for the native ad Posts from this topic will be added to your daily email digest and your homepage feed. See All Gaming Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All News Xbox chief Phil Spencer is leaving Microsoft Xbox president Sarah Bond is also leaving Microsoft. Xbox president Sarah Bond is also leaving Microsoft. Posts from this author will be added to your daily email digest and your homepage feed. See All by Tom Warren Posts from this author will be added to your daily email digest and your homepage feed. See All by Tom Warren Xbox chief Phil Spencer is leaving Microsoft after nearly 40 years at the software giant. Xbox president Sarah Bond is also leaving Microsoft, in what is a major shake-up to the management of Xbox and Microsoft’s gaming efforts. Asha Sharma, currently president of CoreAI product, is taking over as CEO of Microsoft Gaming. Microsoft CEO Satya Nadella announced Phil Spencer’s retirement in a memo to all Microsoft employees today. “Last year, Phil Spencer made the decision to retire from the company, and since then we’ve been talking about succession planning,” says Nadella. “I want to thank Phil for his extraordinary leadership and partnership. Over 38 years at Microsoft, including 12 years leading Gaming, Phil helped transform what we do and how we do it.” Asha Sharma is taking over from Phil Spencer as the new Microsoft Gaming CEO. Sharma is currently the president of CoreAI product at Microsoft, and has been working closely on Microsoft’s AI platform efforts since she rejoined Microsoft in 2024. Spencer will remain in an advisory role through the summer to support the transition. While Sharma isn’t a gamer like Spencer, she does have some consumer experience that could certainly help with leading a division as big as Microsoft Gaming. Sharma left a marketing role at Microsoft in 2013 and has worked at Meta as VP of product and engineering and Instacart as chief operating officer before heading back to Microsoft in 2024. Nadella says he’s “long on gaming and its role at the center of our consumer ambition,” and believes Sharma has “deep experience building and growing platforms, aligning business models to long-term value, and operating at global scale, which will be critical in leading our gaming business into its next era of growth.” Sharma now has three commitments for the future of gaming at Microsoft: great games, the return of Xbox, and the future of play. “We will recommit to our core Xbox fans and players, those who have invested with us for the past 25 years, and to the developers who build the expansive universes and experiences that are embraced by players across the world,” says Sharma in an internal memo. “We will celebrate our roots with a renewed commitment to Xbox starting with console which has shaped who we are. It connects us to the players and fans who invest in Xbox, and to the developers who build ambitious experiences for it.” In a memo to Xbox employees, Spencer reveals that he made the decision to retire from Microsoft in the fall of 2025, just months after rumors circulated online about Spencer’s potential retirement. Microsoft said in July that Spencer was “not retiring anytime soon.” ”Last fall, I shared with Satya that I was thinking about stepping back and starting the next chapter of my life,” says Spencer. “From that moment, we aligned on approaching this transition with intention, ensuring stability, and strengthening the foundation we’ve built. Xbox has always been more than a business. It’s a vibrant community of players, creators, and teams who care deeply about what we build and how we build it. And it deserves a thoughtful, deliberate plan for the road ahead.” As part of the road ahead for Xbox, president Sarah Bond is also leaving Microsoft to “begin a new chapter,” according to Spencer. “Sarah has been instrumental during a defining period for Xbox, shaping our platform strategy, expanding Game Pass and cloud gaming, supporting new hardware launches, and guiding some of the most significant moments in our history,” says Spencer. Microsoft is also promoting Matt Booty to EVP and chief content officer, after previously promoting him to an expanded president of game content and studios position in 2023. “I read Phil’s note with much gratitude,” says Booty in an internal memo to Microsoft’s gaming employees. “He has been a steady champion for game creators and our studio teams, and I’ve learned so much from his leadership over the years. All our games have benefited from his foundational support.” You can read Phil Spencer’s full retirement memo here. Spencer has been at Microsoft since he first joined as an intern in 1988. In his early career at Microsoft he worked on Encarta, Microsoft Money, and Microsoft Works. Spencer joined the Xbox division in 2001, and became the general manager of Microsoft Studios in 2008. He then became the leader of the Xbox division in 2014, overseeing the launch of the Xbox Series X / S and Microsoft’s Xbox Game Pass push. Spencer has also been at the center of Microsoft’s major gaming acquisitions, including Minecraft maker Mojang, Activision Blizzard, and ZeniMax Media. “When I walked through Microsoft’s doors as an intern in June of 1988, I could never have imagined the products I’d help build, the players and customers we’d serve, or the extraordinary teams I’d be lucky enough to join,” says Spencer. “It’s been an epic ride and truly the privilege of a lifetime.” Posts from this author will be added to your daily email digest and your homepage feed. See All by Tom Warren Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All Gaming Posts from this topic will be added to your daily email digest and your homepage feed. See All Microsoft Posts from this topic will be added to your daily email digest and your homepage feed. See All News Posts from this topic will be added to your daily email digest and your homepage feed. See All Tech Posts from this topic will be added to your daily email digest and your homepage feed. See All Xbox More in: Xbox shakeup: Phil Spencer and Sarah Bond are leaving Microsoft Most Popular The Verge Daily A free daily digest of the news that matters most. This is the title for the native ad More in Gaming This is the title for the native ad Top Stories © 2026 Vox Media, LLC. All Rights Reserved
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[SOURCE: https://en.wikipedia.org/wiki/Elon_Musk#cite_ref-17] \| [TOKENS: 10515]
Contents Elon Musk Elon Reeve Musk (/ˈiːlɒn/ EE-lon; born June 28, 1971) is a businessman and entrepreneur known for his leadership of Tesla, SpaceX, Twitter, and xAI. Musk has been the wealthiest person in the world since 2025; as of February 2026,[update] Forbes estimates his net worth to be around US$852 billion. Born into a wealthy family in Pretoria, South Africa, Musk emigrated in 1989 to Canada; he has Canadian citizenship since his mother was born there. He received bachelor's degrees in 1997 from the University of Pennsylvania before moving to California to pursue business ventures. In 1995, Musk co-founded the software company Zip2. Following its sale in 1999, he co-founded X.com, an online payment company that later merged to form PayPal, which was acquired by eBay in 2002. Musk also became an American citizen in 2002. In 2002, Musk founded the space technology company SpaceX, becoming its CEO and chief engineer; the company has since led innovations in reusable rockets and commercial spaceflight. Musk joined the automaker Tesla as an early investor in 2004 and became its CEO and product architect in 2008; it has since become a leader in electric vehicles. In 2015, he co-founded OpenAI to advance artificial intelligence (AI) research, but later left; growing discontent with the organization's direction and their leadership in the AI boom in the 2020s led him to establish xAI, which became a subsidiary of SpaceX in 2026. In 2022, he acquired the social network Twitter, implementing significant changes, and rebranding it as X in 2023. His other businesses include the neurotechnology company Neuralink, which he co-founded in 2016, and the tunneling company the Boring Company, which he founded in 2017. In November 2025, a Tesla pay package worth $1 trillion for Musk was approved, which he is to receive over 10 years if he meets specific goals. Musk was the largest donor in the 2024 U.S. presidential election, where he supported Donald Trump. After Trump was inaugurated as president in early 2025, Musk served as Senior Advisor to the President and as the de facto head of the Department of Government Efficiency (DOGE). After a public feud with Trump, Musk left the Trump administration and returned to managing his companies. Musk is a supporter of global far-right figures, causes, and political parties. His political activities, views, and statements have made him a polarizing figure. Musk has been criticized for COVID-19 misinformation, promoting conspiracy theories, and affirming antisemitic, racist, and transphobic comments. His acquisition of Twitter was controversial due to a subsequent increase in hate speech and the spread of misinformation on the service, following his pledge to decrease censorship. His role in the second Trump administration attracted public backlash, particularly in response to DOGE. The emails he sent to Jeffrey Epstein are included in the Epstein files, which were published between 2025–26 and became a topic of worldwide debate. Early life Elon Reeve Musk was born on June 28, 1971, in Pretoria, South Africa's administrative capital. He is of British and Pennsylvania Dutch ancestry. His mother, Maye (née Haldeman), is a model and dietitian born in Saskatchewan, Canada, and raised in South Africa. Musk therefore holds both South African and Canadian citizenship from birth. His father, Errol Musk, is a South African electromechanical engineer, pilot, sailor, consultant, emerald dealer, and property developer, who partly owned a rental lodge at Timbavati Private Nature Reserve. His maternal grandfather, Joshua N. Haldeman, who died in a plane crash when Elon was a toddler, was an American-born Canadian chiropractor, aviator and political activist in the technocracy movement who moved to South Africa in 1950. Elon has a younger brother, Kimbal, a younger sister, Tosca, and four paternal half-siblings. Musk was baptized as a child in the Anglican Church of Southern Africa. Despite both Elon and Errol previously stating that Errol was a part owner of a Zambian emerald mine, in 2023, Errol recounted that the deal he made was to receive "a portion of the emeralds produced at three small mines". Errol was elected to the Pretoria City Council as a representative of the anti-apartheid Progressive Party and has said that his children shared their father's dislike of apartheid. After his parents divorced in 1979, Elon, aged around 9, chose to live with his father because Errol Musk had an Encyclopædia Britannica and a computer. Elon later regretted his decision and became estranged from his father. Elon has recounted trips to a wilderness school that he described as a "paramilitary Lord of the Flies" where "bullying was a virtue" and children were encouraged to fight over rations. In one incident, after an altercation with a fellow pupil, Elon was thrown down concrete steps and beaten severely, leading to him being hospitalized for his injuries. Elon described his father berating him after he was discharged from the hospital. Errol denied berating Elon and claimed, "The [other] boy had just lost his father to suicide, and Elon had called him stupid. Elon had a tendency to call people stupid. How could I possibly blame that child?" Elon was an enthusiastic reader of books, and had attributed his success in part to having read The Lord of the Rings, the Foundation series, and The Hitchhiker's Guide to the Galaxy. At age ten, he developed an interest in computing and video games, teaching himself how to program from the VIC-20 user manual. At age twelve, Elon sold his BASIC-based game Blastar to PC and Office Technology magazine for approximately $500 (equivalent to $1,600 in 2025). Musk attended Waterkloof House Preparatory School, Bryanston High School, and then Pretoria Boys High School, where he graduated. Musk was a decent but unexceptional student, earning a 61/100 in Afrikaans and a B on his senior math certification. Musk applied for a Canadian passport through his Canadian-born mother to avoid South Africa's mandatory military service, which would have forced him to participate in the apartheid regime, as well as to ease his path to immigration to the United States. While waiting for his application to be processed, he attended the University of Pretoria for five months. Musk arrived in Canada in June 1989, connected with a second cousin in Saskatchewan, and worked odd jobs, including at a farm and a lumber mill. In 1990, he entered Queen's University in Kingston, Ontario. Two years later, he transferred to the University of Pennsylvania, where he studied until 1995. Although Musk has said that he earned his degrees in 1995, the University of Pennsylvania did not award them until 1997 – a Bachelor of Arts in physics and a Bachelor of Science in economics from the university's Wharton School. He reportedly hosted large, ticketed house parties to help pay for tuition, and wrote a business plan for an electronic book-scanning service similar to Google Books. In 1994, Musk held two internships in Silicon Valley: one at energy storage startup Pinnacle Research Institute, which investigated electrolytic supercapacitors for energy storage, and another at Palo Alto–based startup Rocket Science Games. In 1995, he was accepted to a graduate program in materials science at Stanford University, but did not enroll. Musk decided to join the Internet boom of the 1990s, applying for a job at Netscape, to which he reportedly never received a response. The Washington Post reported that Musk lacked legal authorization to remain and work in the United States after failing to enroll at Stanford. In response, Musk said he was allowed to work at that time and that his student visa transitioned to an H1-B. According to numerous former business associates and shareholders, Musk said he was on a student visa at the time. Business career In 1995, Musk, his brother Kimbal, and Greg Kouri founded the web software company Zip2 with funding from a group of angel investors. They housed the venture at a small rented office in Palo Alto. Replying to Rolling Stone, Musk denounced the notion that they started their company with funds borrowed from Errol Musk, but in a tweet, he recognized that his father contributed 10% of a later funding round. The company developed and marketed an Internet city guide for the newspaper publishing industry, with maps, directions, and yellow pages. According to Musk, "The website was up during the day and I was coding it at night, seven days a week, all the time." To impress investors, Musk built a large plastic structure around a standard computer to create the impression that Zip2 was powered by a small supercomputer. The Musk brothers obtained contracts with The New York Times and the Chicago Tribune, and persuaded the board of directors to abandon plans for a merger with CitySearch. Musk's attempts to become CEO were thwarted by the board. Compaq acquired Zip2 for $307 million in cash in February 1999 (equivalent to $590,000,000 in 2025), and Musk received $22 million (equivalent to $43,000,000 in 2025) for his 7-percent share. In 1999, Musk co-founded X.com, an online financial services and e-mail payment company. The startup was one of the first federally insured online banks, and, in its initial months of operation, over 200,000 customers joined the service. The company's investors regarded Musk as inexperienced and replaced him with Intuit CEO Bill Harris by the end of the year. The following year, X.com merged with online bank Confinity to avoid competition. Founded by Max Levchin and Peter Thiel, Confinity had its own money-transfer service, PayPal, which was more popular than X.com's service. Within the merged company, Musk returned as CEO. Musk's preference for Microsoft software over Unix created a rift in the company and caused Thiel to resign. Due to resulting technological issues and lack of a cohesive business model, the board ousted Musk and replaced him with Thiel in 2000.[b] Under Thiel, the company focused on the PayPal service and was renamed PayPal in 2001. In 2002, PayPal was acquired by eBay for $1.5 billion (equivalent to $2,700,000,000 in 2025) in stock, of which Musk—the largest shareholder with 11.72% of shares—received $175.8 million (equivalent to $320,000,000 in 2025). In 2017, Musk purchased the domain X.com from PayPal for an undisclosed amount, stating that it had sentimental value. In 2001, Musk became involved with the nonprofit Mars Society and discussed funding plans to place a growth-chamber for plants on Mars. Seeking a way to launch the greenhouse payloads into space, Musk made two unsuccessful trips to Moscow to purchase intercontinental ballistic missiles (ICBMs) from Russian companies NPO Lavochkin and Kosmotras. Musk instead decided to start a company to build affordable rockets. With $100 million of his early fortune, (equivalent to $180,000,000 in 2025) Musk founded SpaceX in May 2002 and became the company's CEO and Chief Engineer. SpaceX attempted its first launch of the Falcon 1 rocket in 2006. Although the rocket failed to reach Earth orbit, it was awarded a Commercial Orbital Transportation Services program contract from NASA, then led by Mike Griffin. After two more failed attempts that nearly caused Musk to go bankrupt, SpaceX succeeded in launching the Falcon 1 into orbit in 2008. Later that year, SpaceX received a $1.6 billion NASA contract (equivalent to $2,400,000,000 in 2025) for Falcon 9-launched Dragon spacecraft flights to the International Space Station (ISS), replacing the Space Shuttle after its 2011 retirement. In 2012, the Dragon vehicle docked with the ISS, a first for a commercial spacecraft. Working towards its goal of reusable rockets, in 2015 SpaceX successfully landed the first stage of a Falcon 9 on a land platform. Later landings were achieved on autonomous spaceport drone ships, an ocean-based recovery platform. In 2018, SpaceX launched the Falcon Heavy; the inaugural mission carried Musk's personal Tesla Roadster as a dummy payload. Since 2019, SpaceX has been developing Starship, a reusable, super heavy-lift launch vehicle intended to replace the Falcon 9 and Falcon Heavy. In 2020, SpaceX launched its first crewed flight, the Demo-2, becoming the first private company to place astronauts into orbit and dock a crewed spacecraft with the ISS. In 2024, NASA awarded SpaceX an $843 million (equivalent to $865,000,000 in 2025) contract to build a spacecraft that NASA will use to deorbit the ISS at the end of its lifespan. In 2015, SpaceX began development of the Starlink constellation of low Earth orbit satellites to provide satellite Internet access. After the launch of prototype satellites in 2018, the first large constellation was deployed in May 2019. As of May 2025[update], over 7,600 Starlink satellites are operational, comprising 65% of all operational Earth satellites. The total cost of the decade-long project to design, build, and deploy the constellation was estimated by SpaceX in 2020 to be $10 billion (equivalent to $12,000,000,000 in 2025).[c] During the Russian invasion of Ukraine, Musk provided free Starlink service to Ukraine, permitting Internet access and communication at a yearly cost to SpaceX of $400 million (equivalent to $440,000,000 in 2025). However, Musk refused to block Russian state media on Starlink. In 2023, Musk denied Ukraine's request to activate Starlink over Crimea to aid an attack against the Russian navy, citing fears of a nuclear response. Tesla, Inc., originally Tesla Motors, was incorporated in July 2003 by Martin Eberhard and Marc Tarpenning. Both men played active roles in the company's early development prior to Musk's involvement. Musk led the Series A round of investment in February 2004; he invested $6.35 million (equivalent to $11,000,000 in 2025), became the majority shareholder, and joined Tesla's board of directors as chairman. Musk took an active role within the company and oversaw Roadster product design, but was not deeply involved in day-to-day business operations. Following a series of escalating conflicts in 2007 and the 2008 financial crisis, Eberhard was ousted from the firm.[page needed] Musk assumed leadership of the company as CEO and product architect in 2008. A 2009 lawsuit settlement with Eberhard designated Musk as a Tesla co-founder, along with Tarpenning and two others. Tesla began delivery of the Roadster, an electric sports car, in 2008. With sales of about 2,500 vehicles, it was the first mass production all-electric car to use lithium-ion battery cells. Under Musk, Tesla has since launched several well-selling electric vehicles, including the four-door sedan Model S (2012), the crossover Model X (2015), the mass-market sedan Model 3 (2017), the crossover Model Y (2020), and the pickup truck Cybertruck (2023). In May 2020, Musk resigned as chairman of the board as part of the settlement of a lawsuit from the SEC over him tweeting that funding had been "secured" for potentially taking Tesla private. The company has also constructed multiple lithium-ion battery and electric vehicle factories, called Gigafactories. Since its initial public offering in 2010, Tesla stock has risen significantly; it became the most valuable carmaker in summer 2020, and it entered the S&P 500 later that year. In October 2021, it reached a market capitalization of $1 trillion (equivalent to $1,200,000,000,000 in 2025), the sixth company in U.S. history to do so. Musk provided the initial concept and financial capital for SolarCity, which his cousins Lyndon and Peter Rive founded in 2006. By 2013, SolarCity was the second largest provider of solar power systems in the United States. In 2014, Musk promoted the idea of SolarCity building an advanced production facility in Buffalo, New York, triple the size of the largest solar plant in the United States. Construction of the factory started in 2014 and was completed in 2017. It operated as a joint venture with Panasonic until early 2020. Tesla acquired SolarCity for $2 billion in 2016 (equivalent to $2,700,000,000 in 2025) and merged it with its battery unit to create Tesla Energy. The deal's announcement resulted in a more than 10% drop in Tesla's stock price; at the time, SolarCity was facing liquidity issues. Multiple shareholder groups filed a lawsuit against Musk and Tesla's directors, stating that the purchase of SolarCity was done solely to benefit Musk and came at the expense of Tesla and its shareholders. Tesla directors settled the lawsuit in January 2020, leaving Musk the sole remaining defendant. Two years later, the court ruled in Musk's favor. In 2016, Musk co-founded Neuralink, a neurotechnology startup, with an investment of $100 million. Neuralink aims to integrate the human brain with artificial intelligence (AI) by creating devices that are embedded in the brain. Such technology could enhance memory or allow the devices to communicate with software. The company also hopes to develop devices to treat neurological conditions like spinal cord injuries. In 2022, Neuralink announced that clinical trials would begin by the end of the year. In September 2023, the Food and Drug Administration approved Neuralink to initiate six-year human trials. Neuralink has conducted animal testing on macaques at the University of California, Davis. In 2021, the company released a video in which a macaque played the video game Pong via a Neuralink implant. The company's animal trials—which have caused the deaths of some monkeys—have led to claims of animal cruelty. The Physicians Committee for Responsible Medicine has alleged that Neuralink violated the Animal Welfare Act. Employees have complained that pressure from Musk to accelerate development has led to botched experiments and unnecessary animal deaths. In 2022, a federal probe was launched into possible animal welfare violations by Neuralink.[needs update] In 2017, Musk founded the Boring Company to construct tunnels; he also revealed plans for specialized, underground, high-occupancy vehicles that could travel up to 150 miles per hour (240 km/h) and thus circumvent above-ground traffic in major cities. Early in 2017, the company began discussions with regulatory bodies and initiated construction of a 30-foot (9.1 m) wide, 50-foot (15 m) long, and 15-foot (4.6 m) deep "test trench" on the premises of SpaceX's offices, as that required no permits. The Los Angeles tunnel, less than two miles (3.2 km) in length, debuted to journalists in 2018. It used Tesla Model Xs and was reported to be a rough ride while traveling at suboptimal speeds. Two tunnel projects announced in 2018, in Chicago and West Los Angeles, have been canceled. A tunnel beneath the Las Vegas Convention Center was completed in early 2021. Local officials have approved further expansions of the tunnel system. April 14, 2022 In early 2017, Musk expressed interest in buying Twitter and had questioned the platform's commitment to freedom of speech. By 2022, Musk had reached 9.2% stake in the company, making him the largest shareholder.[d] Musk later agreed to a deal that would appoint him to Twitter's board of directors and prohibit him from acquiring more than 14.9% of the company. Days later, Musk made a $43 billion offer to buy Twitter. By the end of April Musk had successfully concluded his bid for approximately $44 billion. This included approximately $12.5 billion in loans and $21 billion in equity financing. Having backtracked on his initial decision, Musk bought the company on October 27, 2022. Immediately after the acquisition, Musk fired several top Twitter executives including CEO Parag Agrawal; Musk became the CEO instead. Under Elon Musk, Twitter instituted monthly subscriptions for a "blue check", and laid off a significant portion of the company's staff. Musk lessened content moderation and hate speech also increased on the platform after his takeover. In late 2022, Musk released internal documents relating to Twitter's moderation of Hunter Biden's laptop controversy in the lead-up to the 2020 presidential election. Musk also promised to step down as CEO after a Twitter poll, and five months later, Musk stepped down as CEO and transitioned his role to executive chairman and chief technology officer (CTO). Despite Musk stepping down as CEO, X continues to struggle with challenges such as viral misinformation, hate speech, and antisemitism controversies. Musk has been accused of trying to silence some of his critics such as Twitch streamer Asmongold, who criticized him during one of his streams. Musk has been accused of removing their accounts' blue checkmarks, which hinders visibility and is considered a form of shadow banning, or suspending their accounts without justification. Other activities In August 2013, Musk announced plans for a version of a vactrain, and assigned engineers from SpaceX and Tesla to design a transport system between Greater Los Angeles and the San Francisco Bay Area, at an estimated cost of $6 billion. Later that year, Musk unveiled the concept, dubbed the Hyperloop, intended to make travel cheaper than any other mode of transport for such long distances. In December 2015, Musk co-founded OpenAI, a not-for-profit artificial intelligence (AI) research company aiming to develop artificial general intelligence, intended to be safe and beneficial to humanity. Musk pledged $1 billion of funding to the company, and initially gave $50 million. In 2018, Musk left the OpenAI board. Since 2018, OpenAI has made significant advances in machine learning. In July 2023, Musk launched the artificial intelligence company xAI, which aims to develop a generative AI program that competes with existing offerings like OpenAI's ChatGPT. Musk obtained funding from investors in SpaceX and Tesla, and xAI hired engineers from Google and OpenAI. December 16, 2022 Musk uses a private jet owned by Falcon Landing LLC, a SpaceX-linked company, and acquired a second jet in August 2020. His heavy use of the jets and the consequent fossil fuel usage have received criticism. Musk's flight usage is tracked on social media through ElonJet. In December 2022, Musk banned the ElonJet account on Twitter, and made temporary bans on the accounts of journalists that posted stories regarding the incident, including Donie O'Sullivan, Keith Olbermann, and journalists from The New York Times, The Washington Post, CNN, and The Intercept. In October 2025, Musk's company xAI launched Grokipedia, an AI-generated online encyclopedia that he promoted as an alternative to Wikipedia. Articles on Grokipedia are generated and reviewed by xAI's Grok chatbot. Media coverage and academic analysis described Grokipedia as frequently reusing Wikipedia content but framing contested political and social topics in line with Musk's own views and right-wing narratives. A study by Cornell University researchers and NBC News stated that Grokipedia cites sources that are blacklisted or considered "generally unreliable" on Wikipedia, for example, the conspiracy site Infowars and the neo-Nazi forum Stormfront. Wired, The Guardian and Time criticized Grokipedia for factual errors and for presenting Musk himself in unusually positive terms while downplaying controversies. Politics Musk is an outlier among business leaders who typically avoid partisan political advocacy. Musk was a registered independent voter when he lived in California. Historically, he has donated to both Democrats and Republicans, many of whom serve in states in which he has a vested interest. Since 2022, his political contributions have mostly supported Republicans, with his first vote for a Republican going to Mayra Flores in the 2022 Texas's 34th congressional district special election. In 2024, he started supporting international far-right political parties, activists, and causes, and has shared misinformation and numerous conspiracy theories. Since 2024, his views have been generally described as right-wing. Musk supported Barack Obama in 2008 and 2012, Hillary Clinton in 2016, Joe Biden in 2020, and Donald Trump in 2024. In the 2020 Democratic Party presidential primaries, Musk endorsed candidate Andrew Yang and expressed support for Yang's proposed universal basic income, and endorsed Kanye West's 2020 presidential campaign. In 2021, Musk publicly expressed opposition to the Build Back Better Act, a $3.5 trillion legislative package endorsed by Joe Biden that ultimately failed to pass due to unanimous opposition from congressional Republicans and several Democrats. In 2022, gave over $50 million to Citizens for Sanity, a conservative political action committee. In 2023, he supported Republican Ron DeSantis for the 2024 U.S. presidential election, giving $10 million to his campaign, and hosted DeSantis's campaign announcement on a Twitter Spaces event. From June 2023 to January 2024, Musk hosted a bipartisan set of X Spaces with Republican and Democratic candidates, including Robert F. Kennedy Jr., Vivek Ramaswamy, and Dean Phillips. In October 2025, former vice-president Kamala Harris commented that it was a mistake from the Democratic side to not invite Musk to a White House electric vehicle event organized in August 2021 and featuring executives from General Motors, Ford and Stellantis, despite Tesla being "the major American manufacturer of extraordinary innovation in this space." Fortune remarked that this was a nod to United Auto Workers and organized labor. Harris said presidents should put aside political loyalties when it came to recognizing innovation, and guessed that the non-invitation impacted Musk's perspective. Fortune noted that, at the time, Musk said, "Yeah, seems odd that Tesla wasn't invited." A month later, he criticized Biden as "not the friendliest administration." Jacob Silverman, author of the book Gilded Rage: Elon Musk and the Radicalization of Silicon Valley, said that the tech industry represented by Musk, Thiel, Andreessen and other capitalists, actually flourished under Biden, but the tech leaders chose Trump for their common ground on cultural issues. By early 2024, Musk had become a vocal and financial supporter of Donald Trump. In July 2024, minutes after the attempted assassination of Donald Trump, Musk endorsed him for president saying; "I fully endorse President Trump and hope for his rapid recovery." During the presidential campaign, Musk joined Trump on stage at a campaign rally, and during the campaign promoted conspiracy theories and falsehoods about Democrats, election fraud and immigration, in support of Trump. Musk was the largest individual donor of the 2024 election. In 2025, Musk contributed $19 million to the Wisconsin Supreme Court race, hoping to influence the state's future redistricting efforts and its regulations governing car manufacturers and dealers. In 2023, Musk said he shunned the World Economic Forum because it was boring. The organization commented that they had not invited him since 2015. He has participated in Dialog, dubbed "Tech Bilderberg" and organized by Peter Thiel and Auren Hoffman, though. Musk's international political actions and comments have come under increasing scrutiny and criticism, especially from the governments and leaders of France, Germany, Norway, Spain and the United Kingdom, particularly due to his position in the U.S. government as well as ownership of X. An NBC News analysis found he had boosted far-right political movements to cut immigration and curtail regulation of business in at least 18 countries on six continents since 2023. During his speech after the second inauguration of Donald Trump, Musk twice made a gesture interpreted by many as a Nazi or a fascist Roman salute.[e] He thumped his right hand over his heart, fingers spread wide, and then extended his right arm out, emphatically, at an upward angle, palm down and fingers together. He then repeated the gesture to the crowd behind him. As he finished the gestures, he said to the crowd, "My heart goes out to you. It is thanks to you that the future of civilization is assured." It was widely condemned as an intentional Nazi salute in Germany, where making such gestures is illegal. The Anti-Defamation League said it was not a Nazi salute, but other Jewish organizations disagreed and condemned the salute. American public opinion was divided on partisan lines as to whether it was a fascist salute. Musk dismissed the accusations of Nazi sympathies, deriding them as "dirty tricks" and a "tired" attack. Neo-Nazi and white supremacist groups celebrated it as a Nazi salute. Multiple European political parties demanded that Musk be banned from entering their countries. The concept of DOGE emerged in a discussion between Musk and Donald Trump, and in August 2024, Trump committed to giving Musk an advisory role, with Musk accepting the offer. In November and December 2024, Musk suggested that the organization could help to cut the U.S. federal budget, consolidate the number of federal agencies, and eliminate the Consumer Financial Protection Bureau, and that its final stage would be "deleting itself". In January 2025, the organization was created by executive order, and Musk was designated a "special government employee". Musk led the organization and was a senior advisor to the president, although his official role is not clear. In sworn statement during a lawsuit, the director of the White House Office of Administration stated that Musk "is not an employee of the U.S. DOGE Service or U.S. DOGE Service Temporary Organization", "is not the U.S. DOGE Service administrator", and has "no actual or formal authority to make government decisions himself". Trump said two days later that he had put Musk in charge of DOGE. A federal judge has ruled that Musk acted as the de facto leader of DOGE. Musk's role in the second Trump administration, particularly in response to DOGE, has attracted public backlash. He was criticized for his treatment of federal government employees, including his influence over the mass layoffs of the federal workforce. He has prioritized secrecy within the organization and has accused others of violating privacy laws. A Senate report alleged that Musk could avoid up to $2 billion in legal liability as a result of DOGE's actions. In May 2025, Bill Gates accused Musk of "killing the world's poorest children" through his cuts to USAID, which modeling by Boston University estimated had resulted in 300,000 deaths by this time, most of them of children. By November 2025, the estimated death toll had increased to 400,000 children and 200,000 adults. Musk announced on May 28, 2025, that he would depart from the Trump administration as planned when the special government employee's 130 day deadline expired, with a White House official confirming that Musk's offboarding from the Trump administration was already underway. His departure was officially confirmed during a joint Oval Office press conference with Trump on May 30, 2025. @realDonaldTrump is in the Epstein files. That is the real reason they have not been made public. June 5, 2025 After leaving office, Musk criticized the Trump administration's Big Beautiful Bill, calling it a "disgusting abomination" due to its provisions increasing the deficit. A feud began between Musk and Trump, with its most notable event being Musk alleging Trump had ties to sex offender Jeffrey Epstein on X (formerly Twitter) on June 5, 2025. Trump responded on Truth Social stating that Musk went "CRAZY" after the "EV Mandate" was purportedly taken away and threatened to cut Musk's government contracts. Musk then called for a third Trump impeachment. The next day, Trump stated that he did not wish to reconcile with Musk, and added that Musk would face "very serious consequences" if he funds Democratic candidates. On June 11, Musk publicly apologized for the tweets against Trump, saying they "went too far". Views November 6, 2022 Rejecting the conservative label, Musk has described himself as a political moderate, even as his views have become more right-wing over time. His views have been characterized as libertarian and far-right, and after his involvement in European politics, they have received criticism from world leaders such as Emmanuel Macron and Olaf Scholz. Within the context of American politics, Musk supported Democratic candidates up until 2022, at which point he voted for a Republican for the first time. He has stated support for universal basic income, gun rights, freedom of speech, a tax on carbon emissions, and H-1B visas. Musk has expressed concern about issues such as artificial intelligence (AI) and climate change, and has been a critic of wealth tax, short-selling, and government subsidies. An immigrant himself, Musk has been accused of being anti-immigration, and regularly blames immigration policies for illegal immigration. He is also a pronatalist who believes population decline is the biggest threat to civilization, and identifies as a cultural Christian. Musk has long been an advocate for space colonization, especially the colonization of Mars. He has repeatedly pushed for humanity colonizing Mars, in order to become an interplanetary species and lower the risks of human extinction. Musk has promoted conspiracy theories and made controversial statements that have led to accusations of racism, sexism, antisemitism, transphobia, disseminating disinformation, and support of white pride. While describing himself as a "pro-Semite", his comments regarding George Soros and Jewish communities have been condemned by the Anti-Defamation League and the Biden White House. Musk was criticized during the COVID-19 pandemic for making unfounded epidemiological claims, defying COVID-19 lockdowns restrictions, and supporting the Canada convoy protest against vaccine mandates. He has amplified false claims of white genocide in South Africa. Musk has been critical of Israel's actions in the Gaza Strip during the Gaza war, praised China's economic and climate goals, suggested that Taiwan and China should resolve cross-strait relations, and was described as having a close relationship with the Chinese government. In Europe, Musk expressed support for Ukraine in 2022 during the Russian invasion, recommended referendums and peace deals on the annexed Russia-occupied territories, and supported the far-right Alternative for Germany political party in 2024. Regarding British politics, Musk blamed the 2024 UK riots on mass migration and open borders, criticized Prime Minister Keir Starmer for what he described as a "two-tier" policing system, and was subsequently attacked as being responsible for spreading misinformation and amplifying the far-right. He has also voiced his support for far-right activist Tommy Robinson and pledged electoral support for Reform UK. In February 2026, Musk described Spanish Prime Minister Pedro Sánchez as a "tyrant" following Sánchez's proposal to prohibit minors under the age of 16 from accessing social media platforms. Legal affairs In 2018, Musk was sued by the U.S. Securities and Exchange Commission (SEC) for a tweet stating that funding had been secured for potentially taking Tesla private.[f] The securities fraud lawsuit characterized the tweet as false, misleading, and damaging to investors, and sought to bar Musk from serving as CEO of publicly traded companies. Two days later, Musk settled with the SEC, without admitting or denying the SEC's allegations. As a result, Musk and Tesla were fined $20 million each, and Musk was forced to step down for three years as Tesla chairman but was able to remain as CEO. Shareholders filed a lawsuit over the tweet, and in February 2023, a jury found Musk and Tesla not liable. Musk has stated in interviews that he does not regret posting the tweet that triggered the SEC investigation. In 2019, Musk stated in a tweet that Tesla would build half a million cars that year. The SEC reacted by asking a court to hold him in contempt for violating the terms of the 2018 settlement agreement. A joint agreement between Musk and the SEC eventually clarified the previous agreement details, including a list of topics about which Musk needed preclearance. In 2020, a judge blocked a lawsuit that claimed a tweet by Musk regarding Tesla stock price ("too high imo") violated the agreement. Freedom of Information Act (FOIA)-released records showed that the SEC concluded Musk had subsequently violated the agreement twice by tweeting regarding "Tesla's solar roof production volumes and its stock price". In October 2023, the SEC sued Musk over his refusal to testify a third time in an investigation into whether he violated federal law by purchasing Twitter stock in 2022. In February 2024, Judge Laurel Beeler ruled that Musk must testify again. In January 2025, the SEC filed a lawsuit against Musk for securities violations related to his purchase of Twitter. In January 2024, Delaware judge Kathaleen McCormick ruled in a 2018 lawsuit that Musk's $55 billion pay package from Tesla be rescinded. McCormick called the compensation granted by the company's board "an unfathomable sum" that was unfair to shareholders. The Delaware Supreme Court overturned McCormick's decision in December 2025, restoring Musk's compensation package and awarding $1 in nominal damages. Personal life Musk became a U.S. citizen in 2002. From the early 2000s until late 2020, Musk resided in California, where both Tesla and SpaceX were founded. He then relocated to Cameron County, Texas, saying that California had become "complacent" about its economic success. While hosting Saturday Night Live in 2021, Musk stated that he has Asperger syndrome (an outdated term for autism spectrum disorder). When asked about his experience growing up with Asperger's syndrome in a TED2022 conference in Vancouver, Musk stated that "the social cues were not intuitive ... I would just tend to take things very literally ... but then that turned out to be wrong — [people were not] simply saying exactly what they mean, there's all sorts of other things that are meant, and [it] took me a while to figure that out." Musk suffers from back pain and has undergone several spine-related surgeries, including a disc replacement. In 2000, he contracted a severe case of malaria while on vacation in South Africa. Musk has stated he uses doctor-prescribed ketamine for occasional depression and that he doses "a small amount once every other week or something like that"; since January 2024, some media outlets have reported that he takes ketamine, marijuana, LSD, ecstasy, mushrooms, cocaine and other drugs. Musk at first refused to comment on his alleged drug use, before responding that he had not tested positive for drugs, and that if drugs somehow improved his productivity, "I would definitely take them!". The New York Times' investigations revealed Musk's overuse of ketamine and numerous other drugs, as well as strained family relationships and concerns from close associates who have become troubled by his public behavior as he became more involved in political activities and government work. According to The Washington Post, President Trump described Musk as "a big-time drug addict". Through his own label Emo G Records, Musk released a rap track, "RIP Harambe", on SoundCloud in March 2019. The following year, he released an EDM track, "Don't Doubt Ur Vibe", featuring his own lyrics and vocals. Musk plays video games, which he stated has a "'restoring effect' that helps his 'mental calibration'". Some games he plays include Quake, Diablo IV, Elden Ring, and Polytopia. Musk once claimed to be one of the world's top video game players but has since admitted to "account boosting", or cheating by hiring outside services to achieve top player rankings. Musk has justified the boosting by claiming that all top accounts do it so he has to as well to remain competitive. In 2024 and 2025, Musk criticized the video game Assassin's Creed Shadows and its creator Ubisoft for "woke" content. Musk posted to X that "DEI kills art" and specified the inclusion of the historical figure Yasuke in the Assassin's Creed game as offensive; he also called the game "terrible". Ubisoft responded by saying that Musk's comments were "just feeding hatred" and that they were focused on producing a game not pushing politics. Musk has fathered at least 14 children, one of whom died as an infant. The Wall Street Journal reported in 2025 that sources close to Musk suggest that the "true number of Musk's children is much higher than publicly known". He had six children with his first wife, Canadian author Justine Wilson, whom he met while attending Queen's University in Ontario, Canada; they married in 2000. In 2002, their first child Nevada Musk died of sudden infant death syndrome at the age of 10 weeks. After his death, the couple used in vitro fertilization (IVF) to continue their family; they had twins in 2004, followed by triplets in 2006. The couple divorced in 2008 and have shared custody of their children. The elder twin he had with Wilson came out as a trans woman and, in 2022, officially changed her name to Vivian Jenna Wilson, adopting her mother's surname because she no longer wished to be associated with Musk. Musk began dating English actress Talulah Riley in 2008. They married two years later at Dornoch Cathedral in Scotland. In 2012, the couple divorced, then remarried the following year. After briefly filing for divorce in 2014, Musk finalized a second divorce from Riley in 2016. Musk then dated the American actress Amber Heard for several months in 2017; he had reportedly been "pursuing" her since 2012. In 2018, Musk and Canadian musician Grimes confirmed they were dating. Grimes and Musk have three children, born in 2020, 2021, and 2022.[g] Musk and Grimes originally gave their eldest child the name "X Æ A-12", which would have violated California regulations as it contained characters that are not in the modern English alphabet; the names registered on the birth certificate are "X" as a first name, "Æ A-Xii" as a middle name, and "Musk" as a last name. They received criticism for choosing a name perceived to be impractical and difficult to pronounce; Musk has said the intended pronunciation is "X Ash A Twelve". Their second child was born via surrogacy. Despite the pregnancy, Musk confirmed reports that the couple were "semi-separated" in September 2021; in an interview with Time in December 2021, he said he was single. In October 2023, Grimes sued Musk over parental rights and custody of X Æ A-Xii. Elon Musk has taken X Æ A-Xii to multiple official events in Washington, D.C. during Trump's second term in office. Also in July 2022, The Wall Street Journal reported that Musk allegedly had an affair with Nicole Shanahan, the wife of Google co-founder Sergey Brin, in 2021, leading to their divorce the following year. Musk denied the report. Musk also had a relationship with Australian actress Natasha Bassett, who has been described as "an occasional girlfriend". In October 2024, The New York Times reported Musk bought a Texas compound for his children and their mothers, though Musk denied having done so. Musk also has four children with Shivon Zilis, director of operations and special projects at Neuralink: twins born via IVF in 2021, a child born in 2024 via surrogacy and a child born in 2025.[h] On February 14, 2025, Ashley St. Clair, an influencer and author, posted on X claiming to have given birth to Musk's son Romulus five months earlier, which media outlets reported as Musk's supposed thirteenth child.[i] On February 22, 2025, it was reported that St Clair had filed for sole custody of her five-month-old son and for Musk to be recognised as the child's father. On March 31, 2025, Musk wrote that, while he was unsure if he was the father of St. Clair's child, he had paid St. Clair $2.5 million and would continue paying her $500,000 per year.[j] Later reporting from the Wall Street Journal indicated that $1 million of these payments to St. Clair were structured as a loan. In 2014, Musk and Ghislaine Maxwell appeared together in a photograph taken at an Academy Awards after-party, which Musk later described as a "photobomb". The January 2026 Epstein files contain emails between Musk and Epstein from 2012 to 2013, after Epstein's first conviction. Emails released on January 30, 2026, indicated that Epstein invited Musk to visit his private island on multiple occasions. The correspondence showed that while Epstein repeatedly encouraged Musk to attend, Musk did not visit the island. In one instance, Musk discussed the possibility of attending a party with his then-wife Talulah Riley and asked which day would be the "wildest party"; according to the emails, the visit did not take place after Epstein later cancelled the plans.[k] On Christmas day in 2012, Musk emailed Epstein asking "Do you have any parties planned? I’ve been working to the edge of sanity this year and so, once my kids head home after Christmas, I really want to hit the party scene in St Barts or elsewhere and let loose. The invitation is much appreciated, but a peaceful island experience is the opposite of what I’m looking for". Epstein replied that the "ratio on my island" might make Musk's wife uncomfortable to which Musk responded, "Ratio is not a problem for Talulah". On September 11, 2013, Epstein sent an email asking Musk if he had any plans for coming to New York for the opening of the United Nations General Assembly where many "interesting people" would be coming to his house to which Musk responded that "Flying to NY to see UN diplomats do nothing would be an unwise use of time". Epstein responded by stating "Do you think i am retarded. Just kidding, there is no one over 25 and all very cute." Musk has denied any close relationship with Epstein and described him as a "creep" who attempted to ingratiate himself with influential people. When Musk was asked in 2019 if he introduced Epstein to Mark Zuckerberg, Musk responded: "I don’t recall introducing Epstein to anyone, as I don’t know the guy well enough to do so." The released emails nonetheless showed cordial exchanges on a range of topics, including Musk's inquiry about parties on the island. The correspondence also indicated that Musk suggested hosting Epstein at SpaceX, while Epstein separately discussed plans to tour SpaceX and bring "the girls", though there is no evidence that such a visit occurred. Musk has described the release of the files a "distraction", later accusing the second Trump administration of suppressing them to protect powerful individuals, including Trump himself.[l] Wealth Elon Musk is the wealthiest person in the world, with an estimated net worth of US$690 billion as of January 2026, according to the Bloomberg Billionaires Index, and $852 billion according to Forbes, primarily from his ownership stakes in SpaceX and Tesla. Having been first listed on the Forbes Billionaires List in 2012, around 75% of Musk's wealth was derived from Tesla stock in November 2020, although he describes himself as "cash poor". According to Forbes, he became the first person in the world to achieve a net worth of $300 billion in 2021; $400 billion in December 2024; $500 billion in October 2025; $600 billion in mid-December 2025; $700 billion later that month; and $800 billion in February 2026. In November 2025, a Tesla pay package worth potentially $1 trillion for Musk was approved, which he is to receive over 10 years if he meets specific goals. Public image Although his ventures have been highly influential within their separate industries starting in the 2000s, Musk only became a public figure in the early 2010s. He has been described as an eccentric who makes spontaneous and impactful decisions, while also often making controversial statements, contrary to other billionaires who prefer reclusiveness to protect their businesses. Musk's actions and his expressed views have made him a polarizing figure. Biographer Ashlee Vance described people's opinions of Musk as polarized due to his "part philosopher, part troll" persona on Twitter. He has drawn denouncement for using his platform to mock the self-selection of personal pronouns, while also receiving praise for bringing international attention to matters like British survivors of grooming gangs. Musk has been described as an American oligarch due to his extensive influence over public discourse, social media, industry, politics, and government policy. After Trump's re-election, Musk's influence and actions during the transition period and the second presidency of Donald Trump led some to call him "President Musk", the "actual president-elect", "shadow president" or "co-president". Awards for his contributions to the development of the Falcon rockets include the American Institute of Aeronautics and Astronautics George Low Transportation Award in 2008, the Fédération Aéronautique Internationale Gold Space Medal in 2010, and the Royal Aeronautical Society Gold Medal in 2012. In 2015, he received an honorary doctorate in engineering and technology from Yale University and an Institute of Electrical and Electronics Engineers Honorary Membership. Musk was elected a Fellow of the Royal Society (FRS) in 2018.[m] In 2022, Musk was elected to the National Academy of Engineering. Time has listed Musk as one of the most influential people in the world in 2010, 2013, 2018, and 2021. Musk was selected as Time's "Person of the Year" for 2021. Then Time editor-in-chief Edward Felsenthal wrote that, "Person of the Year is a marker of influence, and few individuals have had more influence than Musk on life on Earth, and potentially life off Earth too." Notes References Works cited Further reading External links
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[SOURCE: https://en.wikipedia.org/wiki/Computer#cite_ref-stanf_35-1] \| [TOKENS: 10628]
Contents Computer A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs, which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation, or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of computers and users. Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II, both electromechanical and using thermionic valves. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power, and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (Moore's law noted that counts doubled every two years), leading to the Digital Revolution during the late 20th and early 21st centuries. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joysticks, etc.), output devices (monitors, printers, etc.), and input/output devices that perform both functions (e.g. touchscreens). Peripheral devices allow information to be retrieved from an external source, and they enable the results of operations to be saved and retrieved. Etymology It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest computer of Times, and the best Arithmetician that euer [sic] breathed, and he reduceth thy dayes into a short number." This usage of the term referred to a human computer, a person who carried out calculations or computations. The word continued to have the same meaning until the middle of the 20th century. During the latter part of this period, women were often hired as computers because they could be paid less than their male counterparts. By 1943, most human computers were women. The Online Etymology Dictionary gives the first attested use of computer in the 1640s, meaning 'one who calculates'; this is an "agent noun from compute (v.)". The Online Etymology Dictionary states that the use of the term to mean "'calculating machine' (of any type) is from 1897." The Online Etymology Dictionary indicates that the "modern use" of the term, to mean 'programmable digital electronic computer' dates from "1945 under this name; [in a] theoretical [sense] from 1937, as Turing machine". The name has remained, although modern computers are capable of many higher-level functions. History Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with fingers. The earliest counting device was most likely a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres, cones, etc.) which represented counts of items, likely livestock or grains, sealed in hollow unbaked clay containers.[a] The use of counting rods is one example. The abacus was initially used for arithmetic tasks. The Roman abacus was developed from devices used in Babylonia as early as 2400 BCE. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price. It was designed to calculate astronomical positions. It was discovered in 1901 in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to approximately c. 100 BCE. Devices of comparable complexity to the Antikythera mechanism would not reappear until the fourteenth century. Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BCE and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, c. 1000 AD. The sector, a calculating instrument used for solving problems in proportion, trigonometry, multiplication and division, and for various functions, such as squares and cube roots, was developed in the late 16th century and found application in gunnery, surveying and navigation. The planimeter was a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. The slide rule was invented around 1620–1630, by the English clergyman William Oughtred, shortly after the publication of the concept of the logarithm. It is a hand-operated analog computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time and distance calculations on light aircraft. In the 1770s, Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automaton) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. In 1831–1835, mathematician and engineer Giovanni Plana devised a Perpetual Calendar machine, which through a system of pulleys and cylinders could predict the perpetual calendar for every year from 0 CE (that is, 1 BCE) to 4000 CE, keeping track of leap years and varying day length. The tide-predicting machine invented by the Scottish scientist Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location. The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. In 1876, Sir William Thomson had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators. In a differential analyzer, the output of one integrator drove the input of the next integrator, or a graphing output. The torque amplifier was the advance that allowed these machines to work. Starting in the 1920s, Vannevar Bush and others developed mechanical differential analyzers. In the 1890s, the Spanish engineer Leonardo Torres Quevedo began to develop a series of advanced analog machines that could solve real and complex roots of polynomials, which were published in 1901 by the Paris Academy of Sciences. Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer", he conceptualized and invented the first mechanical computer in the early 19th century. After working on his difference engine he announced his invention in 1822, in a paper to the Royal Astronomical Society, titled "Note on the application of machinery to the computation of astronomical and mathematical tables". He also designed to aid in navigational calculations, in 1833 he realized that a much more general design, an analytical engine, was possible. The input of programs and data was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom. For output, the machine would have a printer, a curve plotter and a bell. The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. The machine was about a century ahead of its time. All the parts for his machine had to be made by hand – this was a major problem for a device with thousands of parts. Eventually, the project was dissolved with the decision of the British Government to cease funding. Babbage's failure to complete the analytical engine can be chiefly attributed to political and financial difficulties as well as his desire to develop an increasingly sophisticated computer and to move ahead faster than anyone else could follow. Nevertheless, his son, Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. In his work Essays on Automatics published in 1914, Leonardo Torres Quevedo wrote a brief history of Babbage's efforts at constructing a mechanical Difference Engine and Analytical Engine. The paper contains a design of a machine capable to calculate formulas like a x ( y − z ) 2 {\displaystyle a^{x}(y-z)^{2}} , for a sequence of sets of values. The whole machine was to be controlled by a read-only program, which was complete with provisions for conditional branching. He also introduced the idea of floating-point arithmetic. In 1920, to celebrate the 100th anniversary of the invention of the arithmometer, Torres presented in Paris the Electromechanical Arithmometer, which allowed a user to input arithmetic problems through a keyboard, and computed and printed the results, demonstrating the feasibility of an electromechanical analytical engine. During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson (later to become Lord Kelvin) in 1872. The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson, the elder brother of the more famous Sir William Thomson. The art of mechanical analog computing reached its zenith with the differential analyzer, completed in 1931 by Vannevar Bush at MIT. By the 1950s, the success of digital electronic computers had spelled the end for most analog computing machines, but analog computers remained in use during the 1950s in some specialized applications such as education (slide rule) and aircraft (control systems).[citation needed] Claude Shannon's 1937 master's thesis laid the foundations of digital computing, with his insight of applying Boolean algebra to the analysis and synthesis of switching circuits being the basic concept which underlies all electronic digital computers. By 1938, the United States Navy had developed the Torpedo Data Computer, an electromechanical analog computer for submarines that used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II, similar devices were developed in other countries. Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939 in Berlin, was one of the earliest examples of an electromechanical relay computer. In 1941, Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer. The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. Program code was supplied on punched film while data could be stored in 64 words of memory or supplied from the keyboard. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers. Rather than the harder-to-implement decimal system (used in Charles Babbage's earlier design), using a binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. The Z3 was not itself a universal computer but could be extended to be Turing complete. Zuse's next computer, the Z4, became the world's first commercial computer; after initial delay due to the Second World War, it was completed in 1950 and delivered to the ETH Zurich. The computer was manufactured by Zuse's own company, Zuse KG, which was founded in 1941 as the first company with the sole purpose of developing computers in Berlin. The Z4 served as the inspiration for the construction of the ERMETH, the first Swiss computer and one of the first in Europe. Purely electronic circuit elements soon replaced their mechanical and electromechanical equivalents, at the same time that digital calculation replaced analog. The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation five years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes. In the US, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed and tested the Atanasoff–Berry Computer (ABC) in 1942, the first "automatic electronic digital computer". This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotating drum for memory. During World War II, the British code-breakers at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes which were often run by women. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February. Colossus was the world's first electronic digital programmable computer. It used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Colossus Mark I contained 1,500 thermionic valves (tubes), but Mark II with 2,400 valves, was both five times faster and simpler to operate than Mark I, greatly speeding the decoding process. The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. Although the ENIAC was similar to the Colossus, it was much faster, more flexible, and it was Turing-complete. Like the Colossus, a "program" on the ENIAC was defined by the states of its patch cables and switches, a far cry from the stored program electronic machines that came later. Once a program was written, it had to be mechanically set into the machine with manual resetting of plugs and switches. The programmers of the ENIAC were six women, often known collectively as the "ENIAC girls". It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors. The principle of the modern computer was proposed by Alan Turing in his seminal 1936 paper, On Computable Numbers. Turing proposed a simple device that he called "Universal Computing machine" and that is now known as a universal Turing machine. He proved that such a machine is capable of computing anything that is computable by executing instructions (program) stored on tape, allowing the machine to be programmable. The fundamental concept of Turing's design is the stored program, where all the instructions for computing are stored in memory. Von Neumann acknowledged that the central concept of the modern computer was due to this paper. Turing machines are to this day a central object of study in theory of computation. Except for the limitations imposed by their finite memory stores, modern computers are said to be Turing-complete, which is to say, they have algorithm execution capability equivalent to a universal Turing machine. Early computing machines had fixed programs. Changing its function required the re-wiring and re-structuring of the machine. With the proposal of the stored-program computer this changed. A stored-program computer includes by design an instruction set and can store in memory a set of instructions (a program) that details the computation. The theoretical basis for the stored-program computer was laid out by Alan Turing in his 1936 paper. In 1945, Turing joined the National Physical Laboratory and began work on developing an electronic stored-program digital computer. His 1945 report "Proposed Electronic Calculator" was the first specification for such a device. John von Neumann at the University of Pennsylvania also circulated his First Draft of a Report on the EDVAC in 1945. The Manchester Baby was the world's first stored-program computer. It was built at the University of Manchester in England by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948. It was designed as a testbed for the Williams tube, the first random-access digital storage device. Although the computer was described as "small and primitive" by a 1998 retrospective, it was the first working machine to contain all of the elements essential to a modern electronic computer. As soon as the Baby had demonstrated the feasibility of its design, a project began at the university to develop it into a practically useful computer, the Manchester Mark 1. The Mark 1 in turn quickly became the prototype for the Ferranti Mark 1, the world's first commercially available general-purpose computer. Built by Ferranti, it was delivered to the University of Manchester in February 1951. At least seven of these later machines were delivered between 1953 and 1957, one of them to Shell labs in Amsterdam. In October 1947 the directors of British catering company J. Lyons & Company decided to take an active role in promoting the commercial development of computers. Lyons's LEO I computer, modelled closely on the Cambridge EDSAC of 1949, became operational in April 1951 and ran the world's first routine office computer job. The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947, which was followed by Shockley's bipolar junction transistor in 1948. From 1955 onwards, transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat. Junction transistors were much more reliable than vacuum tubes and had longer, indefinite, service life. Transistorized computers could contain tens of thousands of binary logic circuits in a relatively compact space. However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. At the University of Manchester, a team under the leadership of Tom Kilburn designed and built a machine using the newly developed transistors instead of valves. Their first transistorized computer and the first in the world, was operational by 1953, and a second version was completed there in April 1955. However, the machine did make use of valves to generate its 125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer. That distinction goes to the Harwell CADET of 1955, built by the electronics division of the Atomic Energy Research Establishment at Harwell. The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented at Bell Labs between 1955 and 1960 and was the first truly compact transistor that could be miniaturized and mass-produced for a wide range of uses. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. In addition to data processing, it also enabled the practical use of MOS transistors as memory cell storage elements, leading to the development of MOS semiconductor memory, which replaced earlier magnetic-core memory in computers. The MOSFET led to the microcomputer revolution, and became the driving force behind the computer revolution. The MOSFET is the most widely used transistor in computers, and is the fundamental building block of digital electronics. The next great advance in computing power came with the advent of the integrated circuit (IC). The idea of the integrated circuit was first conceived by a radar scientist working for the Royal Radar Establishment of the Ministry of Defence, Geoffrey W.A. Dummer. Dummer presented the first public description of an integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, D.C., on 7 May 1952. The first working ICs were invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958. In his patent application of 6 February 1959, Kilby described his new device as "a body of semiconductor material ... wherein all the components of the electronic circuit are completely integrated". However, Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (IC) chip. Kilby's IC had external wire connections, which made it difficult to mass-produce. Noyce also came up with his own idea of an integrated circuit half a year later than Kilby. Noyce's invention was the first true monolithic IC chip. His chip solved many practical problems that Kilby's had not. Produced at Fairchild Semiconductor, it was made of silicon, whereas Kilby's chip was made of germanium. Noyce's monolithic IC was fabricated using the planar process, developed by his colleague Jean Hoerni in early 1959. In turn, the planar process was based on Carl Frosch and Lincoln Derick work on semiconductor surface passivation by silicon dioxide. Modern monolithic ICs are predominantly MOS (metal–oxide–semiconductor) integrated circuits, built from MOSFETs (MOS transistors). The earliest experimental MOS IC to be fabricated was a 16-transistor chip built by Fred Heiman and Steven Hofstein at RCA in 1962. General Microelectronics later introduced the first commercial MOS IC in 1964, developed by Robert Norman. Following the development of the self-aligned gate (silicon-gate) MOS transistor by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967, the first silicon-gate MOS IC with self-aligned gates was developed by Federico Faggin at Fairchild Semiconductor in 1968. The MOSFET has since become the most critical device component in modern ICs. The development of the MOS integrated circuit led to the invention of the microprocessor, and heralded an explosion in the commercial and personal use of computers. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Federico Faggin with his silicon-gate MOS IC technology, along with Ted Hoff, Masatoshi Shima and Stanley Mazor at Intel.[b] In the early 1970s, MOS IC technology enabled the integration of more than 10,000 transistors on a single chip. System on a Chip (SoCs) are complete computers on a microchip (or chip) the size of a coin. They may or may not have integrated RAM and flash memory. If not integrated, the RAM is usually placed directly above (known as Package on package) or below (on the opposite side of the circuit board) the SoC, and the flash memory is usually placed right next to the SoC. This is done to improve data transfer speeds, as the data signals do not have to travel long distances. Since ENIAC in 1945, computers have advanced enormously, with modern SoCs (such as the Snapdragon 865) being the size of a coin while also being hundreds of thousands of times more powerful than ENIAC, integrating billions of transistors, and consuming only a few watts of power. The first mobile computers were heavy and ran from mains power. The 50 lb (23 kg) IBM 5100 was an early example. Later portables such as the Osborne 1 and Compaq Portable were considerably lighter but still needed to be plugged in. The first laptops, such as the Grid Compass, removed this requirement by incorporating batteries – and with the continued miniaturization of computing resources and advancements in portable battery life, portable computers grew in popularity in the 2000s. The same developments allowed manufacturers to integrate computing resources into cellular mobile phones by the early 2000s. These smartphones and tablets run on a variety of operating systems and recently became the dominant computing device on the market. These are powered by System on a Chip (SoCs), which are complete computers on a microchip the size of a coin. Types Computers can be classified in a number of different ways, including: A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer,[c] a typical modern definition of a computer is: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information." According to this definition, any device that processes information qualifies as a computer. Hardware The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input devices are all hardware. A general-purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires. Inside each of these parts are thousands to trillions of small electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a "1", and when off it represents a "0" (in positive logic representation). The circuits are arranged in logic gates so that one or more of the circuits may control the state of one or more of the other circuits. Input devices are the means by which the operations of a computer are controlled and it is provided with data. Examples include: Output devices are the means by which a computer provides the results of its calculations in a human-accessible form. Examples include: The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into control signals that activate other parts of the computer.[e] Control systems in advanced computers may change the order of execution of some instructions to improve performance. A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.[f] The control system's function is as follows— this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU: Since the program counter is (conceptually) just another set of memory cells, it can be changed by calculations done in the ALU. Adding 100 to the program counter would cause the next instruction to be read from a place 100 locations further down the program. Instructions that modify the program counter are often known as "jumps" and allow for loops (instructions that are repeated by the computer) and often conditional instruction execution (both examples of control flow). The sequence of operations that the control unit goes through to process an instruction is in itself like a short computer program, and indeed, in some more complex CPU designs, there is another yet smaller computer called a microsequencer, which runs a microcode program that causes all of these events to happen. The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components. Since the 1970s, CPUs have typically been constructed on a single MOS integrated circuit chip called a microprocessor. The ALU is capable of performing two classes of operations: arithmetic and logic. The set of arithmetic operations that a particular ALU supports may be limited to addition and subtraction, or might include multiplication, division, trigonometry functions such as sine, cosine, etc., and square roots. Some can operate only on whole numbers (integers) while others use floating point to represent real numbers, albeit with limited precision. However, any computer that is capable of performing just the simplest operations can be programmed to break down the more complex operations into simple steps that it can perform. Therefore, any computer can be programmed to perform any arithmetic operation—although it will take more time to do so if its ALU does not directly support the operation. An ALU may also compare numbers and return Boolean truth values (true or false) depending on whether one is equal to, greater than or less than the other ("is 64 greater than 65?"). Logic operations involve Boolean logic: AND, OR, XOR, and NOT. These can be useful for creating complicated conditional statements and processing Boolean logic. Superscalar computers may contain multiple ALUs, allowing them to process several instructions simultaneously. Graphics processors and computers with SIMD and MIMD features often contain ALUs that can perform arithmetic on vectors and matrices. A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered "address" and can store a single number. The computer can be instructed to "put the number 123 into the cell numbered 1357" or to "add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595." The information stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers. In almost all modern computers, each memory cell is set up to store binary numbers in groups of eight bits (called a byte). Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or −128 to +127. To store larger numbers, several consecutive bytes may be used (typically, two, four or eight). When negative numbers are required, they are usually stored in two's complement notation. Other arrangements are possible, but are usually not seen outside of specialized applications or historical contexts. A computer can store any kind of information in memory if it can be represented numerically. Modern computers have billions or even trillions of bytes of memory. The CPU contains a special set of memory cells called registers that can be read and written to much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to the ALU and control units) greatly increases the computer's speed. Computer main memory comes in two principal varieties: RAM can be read and written to anytime the CPU commands it, but ROM is preloaded with data and software that never changes, therefore the CPU can only read from it. ROM is typically used to store the computer's initial start-up instructions. In general, the contents of RAM are erased when the power to the computer is turned off, but ROM retains its data indefinitely. In a PC, the ROM contains a specialized program called the BIOS that orchestrates loading the computer's operating system from the hard disk drive into RAM whenever the computer is turned on or reset. In embedded computers, which frequently do not have disk drives, all of the required software may be stored in ROM. Software stored in ROM is often called firmware, because it is notionally more like hardware than software. Flash memory blurs the distinction between ROM and RAM, as it retains its data when turned off but is also rewritable. It is typically much slower than conventional ROM and RAM however, so its use is restricted to applications where high speed is unnecessary.[g] In more sophisticated computers there may be one or more RAM cache memories, which are slower than registers but faster than main memory. Generally computers with this sort of cache are designed to move frequently needed data into the cache automatically, often without the need for any intervention on the programmer's part. I/O is the means by which a computer exchanges information with the outside world. Devices that provide input or output to the computer are called peripherals. On a typical personal computer, peripherals include input devices like the keyboard and mouse, and output devices such as the display and printer. Hard disk drives, floppy disk drives and optical disc drives serve as both input and output devices. Computer networking is another form of I/O. I/O devices are often complex computers in their own right, with their own CPU and memory. A graphics processing unit might contain fifty or more tiny computers that perform the calculations necessary to display 3D graphics.[citation needed] Modern desktop computers contain many smaller computers that assist the main CPU in performing I/O. A 2016-era flat screen display contains its own computer circuitry. While a computer may be viewed as running one gigantic program stored in its main memory, in some systems it is necessary to give the appearance of running several programs simultaneously. This is achieved by multitasking, i.e. having the computer switch rapidly between running each program in turn. One means by which this is done is with a special signal called an interrupt, which can periodically cause the computer to stop executing instructions where it was and do something else instead. By remembering where it was executing prior to the interrupt, the computer can return to that task later. If several programs are running "at the same time". Then the interrupt generator might be causing several hundred interrupts per second, causing a program switch each time. Since modern computers typically execute instructions several orders of magnitude faster than human perception, it may appear that many programs are running at the same time, even though only one is ever executing in any given instant. This method of multitasking is sometimes termed "time-sharing" since each program is allocated a "slice" of time in turn. Before the era of inexpensive computers, the principal use for multitasking was to allow many people to share the same computer. Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss. Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed in only large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result. Supercomputers in particular often have highly unique architectures that differ significantly from the basic stored-program architecture and from general-purpose computers.[h] They often feature thousands of CPUs, customized high-speed interconnects, and specialized computing hardware. Such designs tend to be useful for only specialized tasks due to the large scale of program organization required to use most of the available resources at once. Supercomputers usually see usage in large-scale simulation, graphics rendering, and cryptography applications, as well as with other so-called "embarrassingly parallel" tasks. Software Software is the part of a computer system that consists of the encoded information that determines the computer's operation, such as data or instructions on how to process the data. In contrast to the physical hardware from which the system is built, software is immaterial. Software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. It is often divided into system software and application software. Computer hardware and software require each other and neither is useful on its own. When software is stored in hardware that cannot easily be modified, such as with BIOS ROM in an IBM PC compatible computer, it is sometimes called "firmware". The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write, and due to the complexity of the task almost certainly contain errors. This section applies to most common RAM machine–based computers. In most cases, computer instructions are simple: add one number to another, move some data from one location to another, send a message to some external device, etc. These instructions are read from the computer's memory and are generally carried out (executed) in the order they were given. However, there are usually specialized instructions to tell the computer to jump ahead or backwards to some other place in the program and to carry on executing from there. These are called "jump" instructions (or branches). Furthermore, jump instructions may be made to happen conditionally so that different sequences of instructions may be used depending on the result of some previous calculation or some external event. Many computers directly support subroutines by providing a type of jump that "remembers" the location it jumped from and another instruction to return to the instruction following that jump instruction. Program execution might be likened to reading a book. While a person will normally read each word and line in sequence, they may at times jump back to an earlier place in the text or skip sections that are not of interest. Similarly, a computer may sometimes go back and repeat the instructions in some section of the program over and over again until some internal condition is met. This is called the flow of control within the program and it is what allows the computer to perform tasks repeatedly without human intervention. Comparatively, a person using a pocket calculator can perform a basic arithmetic operation such as adding two numbers with just a few button presses. But to add together all of the numbers from 1 to 1,000 would take thousands of button presses and a lot of time, with a near certainty of making a mistake. On the other hand, a computer may be programmed to do this with just a few simple instructions. The following example is written in the MIPS assembly language: Once told to run this program, the computer will perform the repetitive addition task without further human intervention. It will almost never make a mistake and a modern PC can complete the task in a fraction of a second. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode; the command to multiply them would have a different opcode, and so on. The simplest computers are able to perform any of a handful of different instructions; the more complex computers have several hundred to choose from, each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of these instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer in the same way as numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on. This is called the Harvard architecture after the Harvard Mark I computer. Modern von Neumann computers display some traits of the Harvard architecture in their designs, such as in CPU caches. While it is possible to write computer programs as long lists of numbers (machine language) and while this technique was used with many early computers,[i] it is extremely tedious and potentially error-prone to do so in practice, especially for complicated programs. Instead, each basic instruction can be given a short name that is indicative of its function and easy to remember – a mnemonic such as ADD, SUB, MULT or JUMP. These mnemonics are collectively known as a computer's assembly language. Converting programs written in assembly language into something the computer can actually understand (machine language) is usually done by a computer program called an assembler. A programming language is a notation system for writing the source code from which a computer program is produced. Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques. There are thousands of programming languages—some intended for general purpose programming, others useful for only highly specialized applications. Machine languages and the assembly languages that represent them (collectively termed low-level programming languages) are generally unique to the particular architecture of a computer's central processing unit (CPU). For instance, an ARM architecture CPU (such as may be found in a smartphone or a hand-held videogame) cannot understand the machine language of an x86 CPU that might be in a PC.[j] Historically a significant number of other CPU architectures were created and saw extensive use, notably including the MOS Technology 6502 and 6510 in addition to the Zilog Z80. Although considerably easier than in machine language, writing long programs in assembly language is often difficult and is also error prone. Therefore, most practical programs are written in more abstract high-level programming languages that are able to express the needs of the programmer more conveniently (and thereby help reduce programmer error). High level languages are usually "compiled" into machine language (or sometimes into assembly language and then into machine language) using another computer program called a compiler.[k] High level languages are less related to the workings of the target computer than assembly language, and more related to the language and structure of the problem(s) to be solved by the final program. It is therefore often possible to use different compilers to translate the same high level language program into the machine language of many different types of computer. This is part of the means by which software like video games may be made available for different computer architectures such as personal computers and various video game consoles. Program design of small programs is relatively simple and involves the analysis of the problem, collection of inputs, using the programming constructs within languages, devising or using established procedures and algorithms, providing data for output devices and solutions to the problem as applicable. As problems become larger and more complex, features such as subprograms, modules, formal documentation, and new paradigms such as object-oriented programming are encountered. Large programs involving thousands of line of code and more require formal software methodologies. The task of developing large software systems presents a significant intellectual challenge. Producing software with an acceptably high reliability within a predictable schedule and budget has historically been difficult; the academic and professional discipline of software engineering concentrates specifically on this challenge. Errors in computer programs are called "bugs". They may be benign and not affect the usefulness of the program, or have only subtle effects. However, in some cases they may cause the program or the entire system to "hang", becoming unresponsive to input such as mouse clicks or keystrokes, to completely fail, or to crash. Otherwise benign bugs may sometimes be harnessed for malicious intent by an unscrupulous user writing an exploit, code designed to take advantage of a bug and disrupt a computer's proper execution. Bugs are usually not the fault of the computer. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design.[l] Admiral Grace Hopper, an American computer scientist and developer of the first compiler, is credited for having first used the term "bugs" in computing after a dead moth was found shorting a relay in the Harvard Mark II computer in September 1947. Networking and the Internet Computers have been used to coordinate information between multiple physical locations since the 1950s. The U.S. military's SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems such as Sabre. In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. The effort was funded by ARPA (now DARPA), and the computer network that resulted was called the ARPANET. Logic gates are a common abstraction which can apply to most of the above digital or analog paradigms. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a minimum capability (being Turing-complete) is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, any type of computer (netbook, supercomputer, cellular automaton, etc.) is able to perform the same computational tasks, given enough time and storage capacity. In the 20th century, artificial intelligence systems were predominantly symbolic: they executed code that was explicitly programmed by software developers. Machine learning models, however, have a set parameters that are adjusted throughout training, so that the model learns to accomplish a task based on the provided data. The efficiency of machine learning (and in particular of neural networks) has rapidly improved with progress in hardware for parallel computing, mainly graphics processing units (GPUs). Some large language models are able to control computers or robots. AI progress may lead to the creation of artificial general intelligence (AGI), a type of AI that could accomplish virtually any intellectual task at least as well as humans. Professions and organizations As the use of computers has spread throughout society, there are an increasing number of careers involving computers. The need for computers to work well together and to be able to exchange information has spawned the need for many standards organizations, clubs and societies of both a formal and informal nature. See also Notes References Sources External links
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Contents Computer A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs, which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation, or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of computers and users. Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II, both electromechanical and using thermionic valves. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power, and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (Moore's law noted that counts doubled every two years), leading to the Digital Revolution during the late 20th and early 21st centuries. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joysticks, etc.), output devices (monitors, printers, etc.), and input/output devices that perform both functions (e.g. touchscreens). Peripheral devices allow information to be retrieved from an external source, and they enable the results of operations to be saved and retrieved. Etymology It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest computer of Times, and the best Arithmetician that euer [sic] breathed, and he reduceth thy dayes into a short number." This usage of the term referred to a human computer, a person who carried out calculations or computations. The word continued to have the same meaning until the middle of the 20th century. During the latter part of this period, women were often hired as computers because they could be paid less than their male counterparts. By 1943, most human computers were women. The Online Etymology Dictionary gives the first attested use of computer in the 1640s, meaning 'one who calculates'; this is an "agent noun from compute (v.)". The Online Etymology Dictionary states that the use of the term to mean "'calculating machine' (of any type) is from 1897." The Online Etymology Dictionary indicates that the "modern use" of the term, to mean 'programmable digital electronic computer' dates from "1945 under this name; [in a] theoretical [sense] from 1937, as Turing machine". The name has remained, although modern computers are capable of many higher-level functions. History Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with fingers. The earliest counting device was most likely a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres, cones, etc.) which represented counts of items, likely livestock or grains, sealed in hollow unbaked clay containers.[a] The use of counting rods is one example. The abacus was initially used for arithmetic tasks. The Roman abacus was developed from devices used in Babylonia as early as 2400 BCE. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price. It was designed to calculate astronomical positions. It was discovered in 1901 in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to approximately c. 100 BCE. Devices of comparable complexity to the Antikythera mechanism would not reappear until the fourteenth century. Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BCE and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, c. 1000 AD. The sector, a calculating instrument used for solving problems in proportion, trigonometry, multiplication and division, and for various functions, such as squares and cube roots, was developed in the late 16th century and found application in gunnery, surveying and navigation. The planimeter was a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. The slide rule was invented around 1620–1630, by the English clergyman William Oughtred, shortly after the publication of the concept of the logarithm. It is a hand-operated analog computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time and distance calculations on light aircraft. In the 1770s, Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automaton) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. In 1831–1835, mathematician and engineer Giovanni Plana devised a Perpetual Calendar machine, which through a system of pulleys and cylinders could predict the perpetual calendar for every year from 0 CE (that is, 1 BCE) to 4000 CE, keeping track of leap years and varying day length. The tide-predicting machine invented by the Scottish scientist Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location. The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. In 1876, Sir William Thomson had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators. In a differential analyzer, the output of one integrator drove the input of the next integrator, or a graphing output. The torque amplifier was the advance that allowed these machines to work. Starting in the 1920s, Vannevar Bush and others developed mechanical differential analyzers. In the 1890s, the Spanish engineer Leonardo Torres Quevedo began to develop a series of advanced analog machines that could solve real and complex roots of polynomials, which were published in 1901 by the Paris Academy of Sciences. Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer", he conceptualized and invented the first mechanical computer in the early 19th century. After working on his difference engine he announced his invention in 1822, in a paper to the Royal Astronomical Society, titled "Note on the application of machinery to the computation of astronomical and mathematical tables". He also designed to aid in navigational calculations, in 1833 he realized that a much more general design, an analytical engine, was possible. The input of programs and data was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom. For output, the machine would have a printer, a curve plotter and a bell. The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. The machine was about a century ahead of its time. All the parts for his machine had to be made by hand – this was a major problem for a device with thousands of parts. Eventually, the project was dissolved with the decision of the British Government to cease funding. Babbage's failure to complete the analytical engine can be chiefly attributed to political and financial difficulties as well as his desire to develop an increasingly sophisticated computer and to move ahead faster than anyone else could follow. Nevertheless, his son, Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. In his work Essays on Automatics published in 1914, Leonardo Torres Quevedo wrote a brief history of Babbage's efforts at constructing a mechanical Difference Engine and Analytical Engine. The paper contains a design of a machine capable to calculate formulas like a x ( y − z ) 2 {\displaystyle a^{x}(y-z)^{2}} , for a sequence of sets of values. The whole machine was to be controlled by a read-only program, which was complete with provisions for conditional branching. He also introduced the idea of floating-point arithmetic. In 1920, to celebrate the 100th anniversary of the invention of the arithmometer, Torres presented in Paris the Electromechanical Arithmometer, which allowed a user to input arithmetic problems through a keyboard, and computed and printed the results, demonstrating the feasibility of an electromechanical analytical engine. During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson (later to become Lord Kelvin) in 1872. The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson, the elder brother of the more famous Sir William Thomson. The art of mechanical analog computing reached its zenith with the differential analyzer, completed in 1931 by Vannevar Bush at MIT. By the 1950s, the success of digital electronic computers had spelled the end for most analog computing machines, but analog computers remained in use during the 1950s in some specialized applications such as education (slide rule) and aircraft (control systems).[citation needed] Claude Shannon's 1937 master's thesis laid the foundations of digital computing, with his insight of applying Boolean algebra to the analysis and synthesis of switching circuits being the basic concept which underlies all electronic digital computers. By 1938, the United States Navy had developed the Torpedo Data Computer, an electromechanical analog computer for submarines that used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II, similar devices were developed in other countries. Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939 in Berlin, was one of the earliest examples of an electromechanical relay computer. In 1941, Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer. The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. Program code was supplied on punched film while data could be stored in 64 words of memory or supplied from the keyboard. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers. Rather than the harder-to-implement decimal system (used in Charles Babbage's earlier design), using a binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. The Z3 was not itself a universal computer but could be extended to be Turing complete. Zuse's next computer, the Z4, became the world's first commercial computer; after initial delay due to the Second World War, it was completed in 1950 and delivered to the ETH Zurich. The computer was manufactured by Zuse's own company, Zuse KG, which was founded in 1941 as the first company with the sole purpose of developing computers in Berlin. The Z4 served as the inspiration for the construction of the ERMETH, the first Swiss computer and one of the first in Europe. Purely electronic circuit elements soon replaced their mechanical and electromechanical equivalents, at the same time that digital calculation replaced analog. The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation five years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes. In the US, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed and tested the Atanasoff–Berry Computer (ABC) in 1942, the first "automatic electronic digital computer". This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotating drum for memory. During World War II, the British code-breakers at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes which were often run by women. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February. Colossus was the world's first electronic digital programmable computer. It used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Colossus Mark I contained 1,500 thermionic valves (tubes), but Mark II with 2,400 valves, was both five times faster and simpler to operate than Mark I, greatly speeding the decoding process. The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. Although the ENIAC was similar to the Colossus, it was much faster, more flexible, and it was Turing-complete. Like the Colossus, a "program" on the ENIAC was defined by the states of its patch cables and switches, a far cry from the stored program electronic machines that came later. Once a program was written, it had to be mechanically set into the machine with manual resetting of plugs and switches. The programmers of the ENIAC were six women, often known collectively as the "ENIAC girls". It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors. The principle of the modern computer was proposed by Alan Turing in his seminal 1936 paper, On Computable Numbers. Turing proposed a simple device that he called "Universal Computing machine" and that is now known as a universal Turing machine. He proved that such a machine is capable of computing anything that is computable by executing instructions (program) stored on tape, allowing the machine to be programmable. The fundamental concept of Turing's design is the stored program, where all the instructions for computing are stored in memory. Von Neumann acknowledged that the central concept of the modern computer was due to this paper. Turing machines are to this day a central object of study in theory of computation. Except for the limitations imposed by their finite memory stores, modern computers are said to be Turing-complete, which is to say, they have algorithm execution capability equivalent to a universal Turing machine. Early computing machines had fixed programs. Changing its function required the re-wiring and re-structuring of the machine. With the proposal of the stored-program computer this changed. A stored-program computer includes by design an instruction set and can store in memory a set of instructions (a program) that details the computation. The theoretical basis for the stored-program computer was laid out by Alan Turing in his 1936 paper. In 1945, Turing joined the National Physical Laboratory and began work on developing an electronic stored-program digital computer. His 1945 report "Proposed Electronic Calculator" was the first specification for such a device. John von Neumann at the University of Pennsylvania also circulated his First Draft of a Report on the EDVAC in 1945. The Manchester Baby was the world's first stored-program computer. It was built at the University of Manchester in England by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948. It was designed as a testbed for the Williams tube, the first random-access digital storage device. Although the computer was described as "small and primitive" by a 1998 retrospective, it was the first working machine to contain all of the elements essential to a modern electronic computer. As soon as the Baby had demonstrated the feasibility of its design, a project began at the university to develop it into a practically useful computer, the Manchester Mark 1. The Mark 1 in turn quickly became the prototype for the Ferranti Mark 1, the world's first commercially available general-purpose computer. Built by Ferranti, it was delivered to the University of Manchester in February 1951. At least seven of these later machines were delivered between 1953 and 1957, one of them to Shell labs in Amsterdam. In October 1947 the directors of British catering company J. Lyons & Company decided to take an active role in promoting the commercial development of computers. Lyons's LEO I computer, modelled closely on the Cambridge EDSAC of 1949, became operational in April 1951 and ran the world's first routine office computer job. The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947, which was followed by Shockley's bipolar junction transistor in 1948. From 1955 onwards, transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat. Junction transistors were much more reliable than vacuum tubes and had longer, indefinite, service life. Transistorized computers could contain tens of thousands of binary logic circuits in a relatively compact space. However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. At the University of Manchester, a team under the leadership of Tom Kilburn designed and built a machine using the newly developed transistors instead of valves. Their first transistorized computer and the first in the world, was operational by 1953, and a second version was completed there in April 1955. However, the machine did make use of valves to generate its 125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer. That distinction goes to the Harwell CADET of 1955, built by the electronics division of the Atomic Energy Research Establishment at Harwell. The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented at Bell Labs between 1955 and 1960 and was the first truly compact transistor that could be miniaturized and mass-produced for a wide range of uses. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. In addition to data processing, it also enabled the practical use of MOS transistors as memory cell storage elements, leading to the development of MOS semiconductor memory, which replaced earlier magnetic-core memory in computers. The MOSFET led to the microcomputer revolution, and became the driving force behind the computer revolution. The MOSFET is the most widely used transistor in computers, and is the fundamental building block of digital electronics. The next great advance in computing power came with the advent of the integrated circuit (IC). The idea of the integrated circuit was first conceived by a radar scientist working for the Royal Radar Establishment of the Ministry of Defence, Geoffrey W.A. Dummer. Dummer presented the first public description of an integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, D.C., on 7 May 1952. The first working ICs were invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958. In his patent application of 6 February 1959, Kilby described his new device as "a body of semiconductor material ... wherein all the components of the electronic circuit are completely integrated". However, Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (IC) chip. Kilby's IC had external wire connections, which made it difficult to mass-produce. Noyce also came up with his own idea of an integrated circuit half a year later than Kilby. Noyce's invention was the first true monolithic IC chip. His chip solved many practical problems that Kilby's had not. Produced at Fairchild Semiconductor, it was made of silicon, whereas Kilby's chip was made of germanium. Noyce's monolithic IC was fabricated using the planar process, developed by his colleague Jean Hoerni in early 1959. In turn, the planar process was based on Carl Frosch and Lincoln Derick work on semiconductor surface passivation by silicon dioxide. Modern monolithic ICs are predominantly MOS (metal–oxide–semiconductor) integrated circuits, built from MOSFETs (MOS transistors). The earliest experimental MOS IC to be fabricated was a 16-transistor chip built by Fred Heiman and Steven Hofstein at RCA in 1962. General Microelectronics later introduced the first commercial MOS IC in 1964, developed by Robert Norman. Following the development of the self-aligned gate (silicon-gate) MOS transistor by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967, the first silicon-gate MOS IC with self-aligned gates was developed by Federico Faggin at Fairchild Semiconductor in 1968. The MOSFET has since become the most critical device component in modern ICs. The development of the MOS integrated circuit led to the invention of the microprocessor, and heralded an explosion in the commercial and personal use of computers. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Federico Faggin with his silicon-gate MOS IC technology, along with Ted Hoff, Masatoshi Shima and Stanley Mazor at Intel.[b] In the early 1970s, MOS IC technology enabled the integration of more than 10,000 transistors on a single chip. System on a Chip (SoCs) are complete computers on a microchip (or chip) the size of a coin. They may or may not have integrated RAM and flash memory. If not integrated, the RAM is usually placed directly above (known as Package on package) or below (on the opposite side of the circuit board) the SoC, and the flash memory is usually placed right next to the SoC. This is done to improve data transfer speeds, as the data signals do not have to travel long distances. Since ENIAC in 1945, computers have advanced enormously, with modern SoCs (such as the Snapdragon 865) being the size of a coin while also being hundreds of thousands of times more powerful than ENIAC, integrating billions of transistors, and consuming only a few watts of power. The first mobile computers were heavy and ran from mains power. The 50 lb (23 kg) IBM 5100 was an early example. Later portables such as the Osborne 1 and Compaq Portable were considerably lighter but still needed to be plugged in. The first laptops, such as the Grid Compass, removed this requirement by incorporating batteries – and with the continued miniaturization of computing resources and advancements in portable battery life, portable computers grew in popularity in the 2000s. The same developments allowed manufacturers to integrate computing resources into cellular mobile phones by the early 2000s. These smartphones and tablets run on a variety of operating systems and recently became the dominant computing device on the market. These are powered by System on a Chip (SoCs), which are complete computers on a microchip the size of a coin. Types Computers can be classified in a number of different ways, including: A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer,[c] a typical modern definition of a computer is: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information." According to this definition, any device that processes information qualifies as a computer. Hardware The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input devices are all hardware. A general-purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires. Inside each of these parts are thousands to trillions of small electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a "1", and when off it represents a "0" (in positive logic representation). The circuits are arranged in logic gates so that one or more of the circuits may control the state of one or more of the other circuits. Input devices are the means by which the operations of a computer are controlled and it is provided with data. Examples include: Output devices are the means by which a computer provides the results of its calculations in a human-accessible form. Examples include: The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into control signals that activate other parts of the computer.[e] Control systems in advanced computers may change the order of execution of some instructions to improve performance. A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.[f] The control system's function is as follows— this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU: Since the program counter is (conceptually) just another set of memory cells, it can be changed by calculations done in the ALU. Adding 100 to the program counter would cause the next instruction to be read from a place 100 locations further down the program. Instructions that modify the program counter are often known as "jumps" and allow for loops (instructions that are repeated by the computer) and often conditional instruction execution (both examples of control flow). The sequence of operations that the control unit goes through to process an instruction is in itself like a short computer program, and indeed, in some more complex CPU designs, there is another yet smaller computer called a microsequencer, which runs a microcode program that causes all of these events to happen. The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components. Since the 1970s, CPUs have typically been constructed on a single MOS integrated circuit chip called a microprocessor. The ALU is capable of performing two classes of operations: arithmetic and logic. The set of arithmetic operations that a particular ALU supports may be limited to addition and subtraction, or might include multiplication, division, trigonometry functions such as sine, cosine, etc., and square roots. Some can operate only on whole numbers (integers) while others use floating point to represent real numbers, albeit with limited precision. However, any computer that is capable of performing just the simplest operations can be programmed to break down the more complex operations into simple steps that it can perform. Therefore, any computer can be programmed to perform any arithmetic operation—although it will take more time to do so if its ALU does not directly support the operation. An ALU may also compare numbers and return Boolean truth values (true or false) depending on whether one is equal to, greater than or less than the other ("is 64 greater than 65?"). Logic operations involve Boolean logic: AND, OR, XOR, and NOT. These can be useful for creating complicated conditional statements and processing Boolean logic. Superscalar computers may contain multiple ALUs, allowing them to process several instructions simultaneously. Graphics processors and computers with SIMD and MIMD features often contain ALUs that can perform arithmetic on vectors and matrices. A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered "address" and can store a single number. The computer can be instructed to "put the number 123 into the cell numbered 1357" or to "add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595." The information stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers. In almost all modern computers, each memory cell is set up to store binary numbers in groups of eight bits (called a byte). Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or −128 to +127. To store larger numbers, several consecutive bytes may be used (typically, two, four or eight). When negative numbers are required, they are usually stored in two's complement notation. Other arrangements are possible, but are usually not seen outside of specialized applications or historical contexts. A computer can store any kind of information in memory if it can be represented numerically. Modern computers have billions or even trillions of bytes of memory. The CPU contains a special set of memory cells called registers that can be read and written to much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to the ALU and control units) greatly increases the computer's speed. Computer main memory comes in two principal varieties: RAM can be read and written to anytime the CPU commands it, but ROM is preloaded with data and software that never changes, therefore the CPU can only read from it. ROM is typically used to store the computer's initial start-up instructions. In general, the contents of RAM are erased when the power to the computer is turned off, but ROM retains its data indefinitely. In a PC, the ROM contains a specialized program called the BIOS that orchestrates loading the computer's operating system from the hard disk drive into RAM whenever the computer is turned on or reset. In embedded computers, which frequently do not have disk drives, all of the required software may be stored in ROM. Software stored in ROM is often called firmware, because it is notionally more like hardware than software. Flash memory blurs the distinction between ROM and RAM, as it retains its data when turned off but is also rewritable. It is typically much slower than conventional ROM and RAM however, so its use is restricted to applications where high speed is unnecessary.[g] In more sophisticated computers there may be one or more RAM cache memories, which are slower than registers but faster than main memory. Generally computers with this sort of cache are designed to move frequently needed data into the cache automatically, often without the need for any intervention on the programmer's part. I/O is the means by which a computer exchanges information with the outside world. Devices that provide input or output to the computer are called peripherals. On a typical personal computer, peripherals include input devices like the keyboard and mouse, and output devices such as the display and printer. Hard disk drives, floppy disk drives and optical disc drives serve as both input and output devices. Computer networking is another form of I/O. I/O devices are often complex computers in their own right, with their own CPU and memory. A graphics processing unit might contain fifty or more tiny computers that perform the calculations necessary to display 3D graphics.[citation needed] Modern desktop computers contain many smaller computers that assist the main CPU in performing I/O. A 2016-era flat screen display contains its own computer circuitry. While a computer may be viewed as running one gigantic program stored in its main memory, in some systems it is necessary to give the appearance of running several programs simultaneously. This is achieved by multitasking, i.e. having the computer switch rapidly between running each program in turn. One means by which this is done is with a special signal called an interrupt, which can periodically cause the computer to stop executing instructions where it was and do something else instead. By remembering where it was executing prior to the interrupt, the computer can return to that task later. If several programs are running "at the same time". Then the interrupt generator might be causing several hundred interrupts per second, causing a program switch each time. Since modern computers typically execute instructions several orders of magnitude faster than human perception, it may appear that many programs are running at the same time, even though only one is ever executing in any given instant. This method of multitasking is sometimes termed "time-sharing" since each program is allocated a "slice" of time in turn. Before the era of inexpensive computers, the principal use for multitasking was to allow many people to share the same computer. Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss. Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed in only large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result. Supercomputers in particular often have highly unique architectures that differ significantly from the basic stored-program architecture and from general-purpose computers.[h] They often feature thousands of CPUs, customized high-speed interconnects, and specialized computing hardware. Such designs tend to be useful for only specialized tasks due to the large scale of program organization required to use most of the available resources at once. Supercomputers usually see usage in large-scale simulation, graphics rendering, and cryptography applications, as well as with other so-called "embarrassingly parallel" tasks. Software Software is the part of a computer system that consists of the encoded information that determines the computer's operation, such as data or instructions on how to process the data. In contrast to the physical hardware from which the system is built, software is immaterial. Software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. It is often divided into system software and application software. Computer hardware and software require each other and neither is useful on its own. When software is stored in hardware that cannot easily be modified, such as with BIOS ROM in an IBM PC compatible computer, it is sometimes called "firmware". The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write, and due to the complexity of the task almost certainly contain errors. This section applies to most common RAM machine–based computers. In most cases, computer instructions are simple: add one number to another, move some data from one location to another, send a message to some external device, etc. These instructions are read from the computer's memory and are generally carried out (executed) in the order they were given. However, there are usually specialized instructions to tell the computer to jump ahead or backwards to some other place in the program and to carry on executing from there. These are called "jump" instructions (or branches). Furthermore, jump instructions may be made to happen conditionally so that different sequences of instructions may be used depending on the result of some previous calculation or some external event. Many computers directly support subroutines by providing a type of jump that "remembers" the location it jumped from and another instruction to return to the instruction following that jump instruction. Program execution might be likened to reading a book. While a person will normally read each word and line in sequence, they may at times jump back to an earlier place in the text or skip sections that are not of interest. Similarly, a computer may sometimes go back and repeat the instructions in some section of the program over and over again until some internal condition is met. This is called the flow of control within the program and it is what allows the computer to perform tasks repeatedly without human intervention. Comparatively, a person using a pocket calculator can perform a basic arithmetic operation such as adding two numbers with just a few button presses. But to add together all of the numbers from 1 to 1,000 would take thousands of button presses and a lot of time, with a near certainty of making a mistake. On the other hand, a computer may be programmed to do this with just a few simple instructions. The following example is written in the MIPS assembly language: Once told to run this program, the computer will perform the repetitive addition task without further human intervention. It will almost never make a mistake and a modern PC can complete the task in a fraction of a second. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode; the command to multiply them would have a different opcode, and so on. The simplest computers are able to perform any of a handful of different instructions; the more complex computers have several hundred to choose from, each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of these instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer in the same way as numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on. This is called the Harvard architecture after the Harvard Mark I computer. Modern von Neumann computers display some traits of the Harvard architecture in their designs, such as in CPU caches. While it is possible to write computer programs as long lists of numbers (machine language) and while this technique was used with many early computers,[i] it is extremely tedious and potentially error-prone to do so in practice, especially for complicated programs. Instead, each basic instruction can be given a short name that is indicative of its function and easy to remember – a mnemonic such as ADD, SUB, MULT or JUMP. These mnemonics are collectively known as a computer's assembly language. Converting programs written in assembly language into something the computer can actually understand (machine language) is usually done by a computer program called an assembler. A programming language is a notation system for writing the source code from which a computer program is produced. Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques. There are thousands of programming languages—some intended for general purpose programming, others useful for only highly specialized applications. Machine languages and the assembly languages that represent them (collectively termed low-level programming languages) are generally unique to the particular architecture of a computer's central processing unit (CPU). For instance, an ARM architecture CPU (such as may be found in a smartphone or a hand-held videogame) cannot understand the machine language of an x86 CPU that might be in a PC.[j] Historically a significant number of other CPU architectures were created and saw extensive use, notably including the MOS Technology 6502 and 6510 in addition to the Zilog Z80. Although considerably easier than in machine language, writing long programs in assembly language is often difficult and is also error prone. Therefore, most practical programs are written in more abstract high-level programming languages that are able to express the needs of the programmer more conveniently (and thereby help reduce programmer error). High level languages are usually "compiled" into machine language (or sometimes into assembly language and then into machine language) using another computer program called a compiler.[k] High level languages are less related to the workings of the target computer than assembly language, and more related to the language and structure of the problem(s) to be solved by the final program. It is therefore often possible to use different compilers to translate the same high level language program into the machine language of many different types of computer. This is part of the means by which software like video games may be made available for different computer architectures such as personal computers and various video game consoles. Program design of small programs is relatively simple and involves the analysis of the problem, collection of inputs, using the programming constructs within languages, devising or using established procedures and algorithms, providing data for output devices and solutions to the problem as applicable. As problems become larger and more complex, features such as subprograms, modules, formal documentation, and new paradigms such as object-oriented programming are encountered. Large programs involving thousands of line of code and more require formal software methodologies. The task of developing large software systems presents a significant intellectual challenge. Producing software with an acceptably high reliability within a predictable schedule and budget has historically been difficult; the academic and professional discipline of software engineering concentrates specifically on this challenge. Errors in computer programs are called "bugs". They may be benign and not affect the usefulness of the program, or have only subtle effects. However, in some cases they may cause the program or the entire system to "hang", becoming unresponsive to input such as mouse clicks or keystrokes, to completely fail, or to crash. Otherwise benign bugs may sometimes be harnessed for malicious intent by an unscrupulous user writing an exploit, code designed to take advantage of a bug and disrupt a computer's proper execution. Bugs are usually not the fault of the computer. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design.[l] Admiral Grace Hopper, an American computer scientist and developer of the first compiler, is credited for having first used the term "bugs" in computing after a dead moth was found shorting a relay in the Harvard Mark II computer in September 1947. Networking and the Internet Computers have been used to coordinate information between multiple physical locations since the 1950s. The U.S. military's SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems such as Sabre. In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. The effort was funded by ARPA (now DARPA), and the computer network that resulted was called the ARPANET. Logic gates are a common abstraction which can apply to most of the above digital or analog paradigms. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a minimum capability (being Turing-complete) is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, any type of computer (netbook, supercomputer, cellular automaton, etc.) is able to perform the same computational tasks, given enough time and storage capacity. In the 20th century, artificial intelligence systems were predominantly symbolic: they executed code that was explicitly programmed by software developers. Machine learning models, however, have a set parameters that are adjusted throughout training, so that the model learns to accomplish a task based on the provided data. The efficiency of machine learning (and in particular of neural networks) has rapidly improved with progress in hardware for parallel computing, mainly graphics processing units (GPUs). Some large language models are able to control computers or robots. AI progress may lead to the creation of artificial general intelligence (AGI), a type of AI that could accomplish virtually any intellectual task at least as well as humans. Professions and organizations As the use of computers has spread throughout society, there are an increasing number of careers involving computers. The need for computers to work well together and to be able to exchange information has spawned the need for many standards organizations, clubs and societies of both a formal and informal nature. See also Notes References Sources External links
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Contents Computer A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs, which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation, or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of computers and users. Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II, both electromechanical and using thermionic valves. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power, and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (Moore's law noted that counts doubled every two years), leading to the Digital Revolution during the late 20th and early 21st centuries. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joysticks, etc.), output devices (monitors, printers, etc.), and input/output devices that perform both functions (e.g. touchscreens). Peripheral devices allow information to be retrieved from an external source, and they enable the results of operations to be saved and retrieved. Etymology It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest computer of Times, and the best Arithmetician that euer [sic] breathed, and he reduceth thy dayes into a short number." This usage of the term referred to a human computer, a person who carried out calculations or computations. The word continued to have the same meaning until the middle of the 20th century. During the latter part of this period, women were often hired as computers because they could be paid less than their male counterparts. By 1943, most human computers were women. The Online Etymology Dictionary gives the first attested use of computer in the 1640s, meaning 'one who calculates'; this is an "agent noun from compute (v.)". The Online Etymology Dictionary states that the use of the term to mean "'calculating machine' (of any type) is from 1897." The Online Etymology Dictionary indicates that the "modern use" of the term, to mean 'programmable digital electronic computer' dates from "1945 under this name; [in a] theoretical [sense] from 1937, as Turing machine". The name has remained, although modern computers are capable of many higher-level functions. History Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with fingers. The earliest counting device was most likely a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres, cones, etc.) which represented counts of items, likely livestock or grains, sealed in hollow unbaked clay containers.[a] The use of counting rods is one example. The abacus was initially used for arithmetic tasks. The Roman abacus was developed from devices used in Babylonia as early as 2400 BCE. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price. It was designed to calculate astronomical positions. It was discovered in 1901 in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to approximately c. 100 BCE. Devices of comparable complexity to the Antikythera mechanism would not reappear until the fourteenth century. Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BCE and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, c. 1000 AD. The sector, a calculating instrument used for solving problems in proportion, trigonometry, multiplication and division, and for various functions, such as squares and cube roots, was developed in the late 16th century and found application in gunnery, surveying and navigation. The planimeter was a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. The slide rule was invented around 1620–1630, by the English clergyman William Oughtred, shortly after the publication of the concept of the logarithm. It is a hand-operated analog computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time and distance calculations on light aircraft. In the 1770s, Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automaton) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. In 1831–1835, mathematician and engineer Giovanni Plana devised a Perpetual Calendar machine, which through a system of pulleys and cylinders could predict the perpetual calendar for every year from 0 CE (that is, 1 BCE) to 4000 CE, keeping track of leap years and varying day length. The tide-predicting machine invented by the Scottish scientist Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location. The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. In 1876, Sir William Thomson had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators. In a differential analyzer, the output of one integrator drove the input of the next integrator, or a graphing output. The torque amplifier was the advance that allowed these machines to work. Starting in the 1920s, Vannevar Bush and others developed mechanical differential analyzers. In the 1890s, the Spanish engineer Leonardo Torres Quevedo began to develop a series of advanced analog machines that could solve real and complex roots of polynomials, which were published in 1901 by the Paris Academy of Sciences. Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer", he conceptualized and invented the first mechanical computer in the early 19th century. After working on his difference engine he announced his invention in 1822, in a paper to the Royal Astronomical Society, titled "Note on the application of machinery to the computation of astronomical and mathematical tables". He also designed to aid in navigational calculations, in 1833 he realized that a much more general design, an analytical engine, was possible. The input of programs and data was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom. For output, the machine would have a printer, a curve plotter and a bell. The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. The machine was about a century ahead of its time. All the parts for his machine had to be made by hand – this was a major problem for a device with thousands of parts. Eventually, the project was dissolved with the decision of the British Government to cease funding. Babbage's failure to complete the analytical engine can be chiefly attributed to political and financial difficulties as well as his desire to develop an increasingly sophisticated computer and to move ahead faster than anyone else could follow. Nevertheless, his son, Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. In his work Essays on Automatics published in 1914, Leonardo Torres Quevedo wrote a brief history of Babbage's efforts at constructing a mechanical Difference Engine and Analytical Engine. The paper contains a design of a machine capable to calculate formulas like a x ( y − z ) 2 {\displaystyle a^{x}(y-z)^{2}} , for a sequence of sets of values. The whole machine was to be controlled by a read-only program, which was complete with provisions for conditional branching. He also introduced the idea of floating-point arithmetic. In 1920, to celebrate the 100th anniversary of the invention of the arithmometer, Torres presented in Paris the Electromechanical Arithmometer, which allowed a user to input arithmetic problems through a keyboard, and computed and printed the results, demonstrating the feasibility of an electromechanical analytical engine. During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson (later to become Lord Kelvin) in 1872. The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson, the elder brother of the more famous Sir William Thomson. The art of mechanical analog computing reached its zenith with the differential analyzer, completed in 1931 by Vannevar Bush at MIT. By the 1950s, the success of digital electronic computers had spelled the end for most analog computing machines, but analog computers remained in use during the 1950s in some specialized applications such as education (slide rule) and aircraft (control systems).[citation needed] Claude Shannon's 1937 master's thesis laid the foundations of digital computing, with his insight of applying Boolean algebra to the analysis and synthesis of switching circuits being the basic concept which underlies all electronic digital computers. By 1938, the United States Navy had developed the Torpedo Data Computer, an electromechanical analog computer for submarines that used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II, similar devices were developed in other countries. Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939 in Berlin, was one of the earliest examples of an electromechanical relay computer. In 1941, Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer. The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. Program code was supplied on punched film while data could be stored in 64 words of memory or supplied from the keyboard. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers. Rather than the harder-to-implement decimal system (used in Charles Babbage's earlier design), using a binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. The Z3 was not itself a universal computer but could be extended to be Turing complete. Zuse's next computer, the Z4, became the world's first commercial computer; after initial delay due to the Second World War, it was completed in 1950 and delivered to the ETH Zurich. The computer was manufactured by Zuse's own company, Zuse KG, which was founded in 1941 as the first company with the sole purpose of developing computers in Berlin. The Z4 served as the inspiration for the construction of the ERMETH, the first Swiss computer and one of the first in Europe. Purely electronic circuit elements soon replaced their mechanical and electromechanical equivalents, at the same time that digital calculation replaced analog. The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation five years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes. In the US, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed and tested the Atanasoff–Berry Computer (ABC) in 1942, the first "automatic electronic digital computer". This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotating drum for memory. During World War II, the British code-breakers at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes which were often run by women. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February. Colossus was the world's first electronic digital programmable computer. It used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Colossus Mark I contained 1,500 thermionic valves (tubes), but Mark II with 2,400 valves, was both five times faster and simpler to operate than Mark I, greatly speeding the decoding process. The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. Although the ENIAC was similar to the Colossus, it was much faster, more flexible, and it was Turing-complete. Like the Colossus, a "program" on the ENIAC was defined by the states of its patch cables and switches, a far cry from the stored program electronic machines that came later. Once a program was written, it had to be mechanically set into the machine with manual resetting of plugs and switches. The programmers of the ENIAC were six women, often known collectively as the "ENIAC girls". It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors. The principle of the modern computer was proposed by Alan Turing in his seminal 1936 paper, On Computable Numbers. Turing proposed a simple device that he called "Universal Computing machine" and that is now known as a universal Turing machine. He proved that such a machine is capable of computing anything that is computable by executing instructions (program) stored on tape, allowing the machine to be programmable. The fundamental concept of Turing's design is the stored program, where all the instructions for computing are stored in memory. Von Neumann acknowledged that the central concept of the modern computer was due to this paper. Turing machines are to this day a central object of study in theory of computation. Except for the limitations imposed by their finite memory stores, modern computers are said to be Turing-complete, which is to say, they have algorithm execution capability equivalent to a universal Turing machine. Early computing machines had fixed programs. Changing its function required the re-wiring and re-structuring of the machine. With the proposal of the stored-program computer this changed. A stored-program computer includes by design an instruction set and can store in memory a set of instructions (a program) that details the computation. The theoretical basis for the stored-program computer was laid out by Alan Turing in his 1936 paper. In 1945, Turing joined the National Physical Laboratory and began work on developing an electronic stored-program digital computer. His 1945 report "Proposed Electronic Calculator" was the first specification for such a device. John von Neumann at the University of Pennsylvania also circulated his First Draft of a Report on the EDVAC in 1945. The Manchester Baby was the world's first stored-program computer. It was built at the University of Manchester in England by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948. It was designed as a testbed for the Williams tube, the first random-access digital storage device. Although the computer was described as "small and primitive" by a 1998 retrospective, it was the first working machine to contain all of the elements essential to a modern electronic computer. As soon as the Baby had demonstrated the feasibility of its design, a project began at the university to develop it into a practically useful computer, the Manchester Mark 1. The Mark 1 in turn quickly became the prototype for the Ferranti Mark 1, the world's first commercially available general-purpose computer. Built by Ferranti, it was delivered to the University of Manchester in February 1951. At least seven of these later machines were delivered between 1953 and 1957, one of them to Shell labs in Amsterdam. In October 1947 the directors of British catering company J. Lyons & Company decided to take an active role in promoting the commercial development of computers. Lyons's LEO I computer, modelled closely on the Cambridge EDSAC of 1949, became operational in April 1951 and ran the world's first routine office computer job. The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947, which was followed by Shockley's bipolar junction transistor in 1948. From 1955 onwards, transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat. Junction transistors were much more reliable than vacuum tubes and had longer, indefinite, service life. Transistorized computers could contain tens of thousands of binary logic circuits in a relatively compact space. However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. At the University of Manchester, a team under the leadership of Tom Kilburn designed and built a machine using the newly developed transistors instead of valves. Their first transistorized computer and the first in the world, was operational by 1953, and a second version was completed there in April 1955. However, the machine did make use of valves to generate its 125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer. That distinction goes to the Harwell CADET of 1955, built by the electronics division of the Atomic Energy Research Establishment at Harwell. The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented at Bell Labs between 1955 and 1960 and was the first truly compact transistor that could be miniaturized and mass-produced for a wide range of uses. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. In addition to data processing, it also enabled the practical use of MOS transistors as memory cell storage elements, leading to the development of MOS semiconductor memory, which replaced earlier magnetic-core memory in computers. The MOSFET led to the microcomputer revolution, and became the driving force behind the computer revolution. The MOSFET is the most widely used transistor in computers, and is the fundamental building block of digital electronics. The next great advance in computing power came with the advent of the integrated circuit (IC). The idea of the integrated circuit was first conceived by a radar scientist working for the Royal Radar Establishment of the Ministry of Defence, Geoffrey W.A. Dummer. Dummer presented the first public description of an integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, D.C., on 7 May 1952. The first working ICs were invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958. In his patent application of 6 February 1959, Kilby described his new device as "a body of semiconductor material ... wherein all the components of the electronic circuit are completely integrated". However, Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (IC) chip. Kilby's IC had external wire connections, which made it difficult to mass-produce. Noyce also came up with his own idea of an integrated circuit half a year later than Kilby. Noyce's invention was the first true monolithic IC chip. His chip solved many practical problems that Kilby's had not. Produced at Fairchild Semiconductor, it was made of silicon, whereas Kilby's chip was made of germanium. Noyce's monolithic IC was fabricated using the planar process, developed by his colleague Jean Hoerni in early 1959. In turn, the planar process was based on Carl Frosch and Lincoln Derick work on semiconductor surface passivation by silicon dioxide. Modern monolithic ICs are predominantly MOS (metal–oxide–semiconductor) integrated circuits, built from MOSFETs (MOS transistors). The earliest experimental MOS IC to be fabricated was a 16-transistor chip built by Fred Heiman and Steven Hofstein at RCA in 1962. General Microelectronics later introduced the first commercial MOS IC in 1964, developed by Robert Norman. Following the development of the self-aligned gate (silicon-gate) MOS transistor by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967, the first silicon-gate MOS IC with self-aligned gates was developed by Federico Faggin at Fairchild Semiconductor in 1968. The MOSFET has since become the most critical device component in modern ICs. The development of the MOS integrated circuit led to the invention of the microprocessor, and heralded an explosion in the commercial and personal use of computers. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Federico Faggin with his silicon-gate MOS IC technology, along with Ted Hoff, Masatoshi Shima and Stanley Mazor at Intel.[b] In the early 1970s, MOS IC technology enabled the integration of more than 10,000 transistors on a single chip. System on a Chip (SoCs) are complete computers on a microchip (or chip) the size of a coin. They may or may not have integrated RAM and flash memory. If not integrated, the RAM is usually placed directly above (known as Package on package) or below (on the opposite side of the circuit board) the SoC, and the flash memory is usually placed right next to the SoC. This is done to improve data transfer speeds, as the data signals do not have to travel long distances. Since ENIAC in 1945, computers have advanced enormously, with modern SoCs (such as the Snapdragon 865) being the size of a coin while also being hundreds of thousands of times more powerful than ENIAC, integrating billions of transistors, and consuming only a few watts of power. The first mobile computers were heavy and ran from mains power. The 50 lb (23 kg) IBM 5100 was an early example. Later portables such as the Osborne 1 and Compaq Portable were considerably lighter but still needed to be plugged in. The first laptops, such as the Grid Compass, removed this requirement by incorporating batteries – and with the continued miniaturization of computing resources and advancements in portable battery life, portable computers grew in popularity in the 2000s. The same developments allowed manufacturers to integrate computing resources into cellular mobile phones by the early 2000s. These smartphones and tablets run on a variety of operating systems and recently became the dominant computing device on the market. These are powered by System on a Chip (SoCs), which are complete computers on a microchip the size of a coin. Types Computers can be classified in a number of different ways, including: A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer,[c] a typical modern definition of a computer is: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information." According to this definition, any device that processes information qualifies as a computer. Hardware The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input devices are all hardware. A general-purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires. Inside each of these parts are thousands to trillions of small electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a "1", and when off it represents a "0" (in positive logic representation). The circuits are arranged in logic gates so that one or more of the circuits may control the state of one or more of the other circuits. Input devices are the means by which the operations of a computer are controlled and it is provided with data. Examples include: Output devices are the means by which a computer provides the results of its calculations in a human-accessible form. Examples include: The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into control signals that activate other parts of the computer.[e] Control systems in advanced computers may change the order of execution of some instructions to improve performance. A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.[f] The control system's function is as follows— this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU: Since the program counter is (conceptually) just another set of memory cells, it can be changed by calculations done in the ALU. Adding 100 to the program counter would cause the next instruction to be read from a place 100 locations further down the program. Instructions that modify the program counter are often known as "jumps" and allow for loops (instructions that are repeated by the computer) and often conditional instruction execution (both examples of control flow). The sequence of operations that the control unit goes through to process an instruction is in itself like a short computer program, and indeed, in some more complex CPU designs, there is another yet smaller computer called a microsequencer, which runs a microcode program that causes all of these events to happen. The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components. Since the 1970s, CPUs have typically been constructed on a single MOS integrated circuit chip called a microprocessor. The ALU is capable of performing two classes of operations: arithmetic and logic. The set of arithmetic operations that a particular ALU supports may be limited to addition and subtraction, or might include multiplication, division, trigonometry functions such as sine, cosine, etc., and square roots. Some can operate only on whole numbers (integers) while others use floating point to represent real numbers, albeit with limited precision. However, any computer that is capable of performing just the simplest operations can be programmed to break down the more complex operations into simple steps that it can perform. Therefore, any computer can be programmed to perform any arithmetic operation—although it will take more time to do so if its ALU does not directly support the operation. An ALU may also compare numbers and return Boolean truth values (true or false) depending on whether one is equal to, greater than or less than the other ("is 64 greater than 65?"). Logic operations involve Boolean logic: AND, OR, XOR, and NOT. These can be useful for creating complicated conditional statements and processing Boolean logic. Superscalar computers may contain multiple ALUs, allowing them to process several instructions simultaneously. Graphics processors and computers with SIMD and MIMD features often contain ALUs that can perform arithmetic on vectors and matrices. A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered "address" and can store a single number. The computer can be instructed to "put the number 123 into the cell numbered 1357" or to "add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595." The information stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers. In almost all modern computers, each memory cell is set up to store binary numbers in groups of eight bits (called a byte). Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or −128 to +127. To store larger numbers, several consecutive bytes may be used (typically, two, four or eight). When negative numbers are required, they are usually stored in two's complement notation. Other arrangements are possible, but are usually not seen outside of specialized applications or historical contexts. A computer can store any kind of information in memory if it can be represented numerically. Modern computers have billions or even trillions of bytes of memory. The CPU contains a special set of memory cells called registers that can be read and written to much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to the ALU and control units) greatly increases the computer's speed. Computer main memory comes in two principal varieties: RAM can be read and written to anytime the CPU commands it, but ROM is preloaded with data and software that never changes, therefore the CPU can only read from it. ROM is typically used to store the computer's initial start-up instructions. In general, the contents of RAM are erased when the power to the computer is turned off, but ROM retains its data indefinitely. In a PC, the ROM contains a specialized program called the BIOS that orchestrates loading the computer's operating system from the hard disk drive into RAM whenever the computer is turned on or reset. In embedded computers, which frequently do not have disk drives, all of the required software may be stored in ROM. Software stored in ROM is often called firmware, because it is notionally more like hardware than software. Flash memory blurs the distinction between ROM and RAM, as it retains its data when turned off but is also rewritable. It is typically much slower than conventional ROM and RAM however, so its use is restricted to applications where high speed is unnecessary.[g] In more sophisticated computers there may be one or more RAM cache memories, which are slower than registers but faster than main memory. Generally computers with this sort of cache are designed to move frequently needed data into the cache automatically, often without the need for any intervention on the programmer's part. I/O is the means by which a computer exchanges information with the outside world. Devices that provide input or output to the computer are called peripherals. On a typical personal computer, peripherals include input devices like the keyboard and mouse, and output devices such as the display and printer. Hard disk drives, floppy disk drives and optical disc drives serve as both input and output devices. Computer networking is another form of I/O. I/O devices are often complex computers in their own right, with their own CPU and memory. A graphics processing unit might contain fifty or more tiny computers that perform the calculations necessary to display 3D graphics.[citation needed] Modern desktop computers contain many smaller computers that assist the main CPU in performing I/O. A 2016-era flat screen display contains its own computer circuitry. While a computer may be viewed as running one gigantic program stored in its main memory, in some systems it is necessary to give the appearance of running several programs simultaneously. This is achieved by multitasking, i.e. having the computer switch rapidly between running each program in turn. One means by which this is done is with a special signal called an interrupt, which can periodically cause the computer to stop executing instructions where it was and do something else instead. By remembering where it was executing prior to the interrupt, the computer can return to that task later. If several programs are running "at the same time". Then the interrupt generator might be causing several hundred interrupts per second, causing a program switch each time. Since modern computers typically execute instructions several orders of magnitude faster than human perception, it may appear that many programs are running at the same time, even though only one is ever executing in any given instant. This method of multitasking is sometimes termed "time-sharing" since each program is allocated a "slice" of time in turn. Before the era of inexpensive computers, the principal use for multitasking was to allow many people to share the same computer. Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss. Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed in only large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result. Supercomputers in particular often have highly unique architectures that differ significantly from the basic stored-program architecture and from general-purpose computers.[h] They often feature thousands of CPUs, customized high-speed interconnects, and specialized computing hardware. Such designs tend to be useful for only specialized tasks due to the large scale of program organization required to use most of the available resources at once. Supercomputers usually see usage in large-scale simulation, graphics rendering, and cryptography applications, as well as with other so-called "embarrassingly parallel" tasks. Software Software is the part of a computer system that consists of the encoded information that determines the computer's operation, such as data or instructions on how to process the data. In contrast to the physical hardware from which the system is built, software is immaterial. Software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. It is often divided into system software and application software. Computer hardware and software require each other and neither is useful on its own. When software is stored in hardware that cannot easily be modified, such as with BIOS ROM in an IBM PC compatible computer, it is sometimes called "firmware". The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write, and due to the complexity of the task almost certainly contain errors. This section applies to most common RAM machine–based computers. In most cases, computer instructions are simple: add one number to another, move some data from one location to another, send a message to some external device, etc. These instructions are read from the computer's memory and are generally carried out (executed) in the order they were given. However, there are usually specialized instructions to tell the computer to jump ahead or backwards to some other place in the program and to carry on executing from there. These are called "jump" instructions (or branches). Furthermore, jump instructions may be made to happen conditionally so that different sequences of instructions may be used depending on the result of some previous calculation or some external event. Many computers directly support subroutines by providing a type of jump that "remembers" the location it jumped from and another instruction to return to the instruction following that jump instruction. Program execution might be likened to reading a book. While a person will normally read each word and line in sequence, they may at times jump back to an earlier place in the text or skip sections that are not of interest. Similarly, a computer may sometimes go back and repeat the instructions in some section of the program over and over again until some internal condition is met. This is called the flow of control within the program and it is what allows the computer to perform tasks repeatedly without human intervention. Comparatively, a person using a pocket calculator can perform a basic arithmetic operation such as adding two numbers with just a few button presses. But to add together all of the numbers from 1 to 1,000 would take thousands of button presses and a lot of time, with a near certainty of making a mistake. On the other hand, a computer may be programmed to do this with just a few simple instructions. The following example is written in the MIPS assembly language: Once told to run this program, the computer will perform the repetitive addition task without further human intervention. It will almost never make a mistake and a modern PC can complete the task in a fraction of a second. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode; the command to multiply them would have a different opcode, and so on. The simplest computers are able to perform any of a handful of different instructions; the more complex computers have several hundred to choose from, each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of these instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer in the same way as numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on. This is called the Harvard architecture after the Harvard Mark I computer. Modern von Neumann computers display some traits of the Harvard architecture in their designs, such as in CPU caches. While it is possible to write computer programs as long lists of numbers (machine language) and while this technique was used with many early computers,[i] it is extremely tedious and potentially error-prone to do so in practice, especially for complicated programs. Instead, each basic instruction can be given a short name that is indicative of its function and easy to remember – a mnemonic such as ADD, SUB, MULT or JUMP. These mnemonics are collectively known as a computer's assembly language. Converting programs written in assembly language into something the computer can actually understand (machine language) is usually done by a computer program called an assembler. A programming language is a notation system for writing the source code from which a computer program is produced. Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques. There are thousands of programming languages—some intended for general purpose programming, others useful for only highly specialized applications. Machine languages and the assembly languages that represent them (collectively termed low-level programming languages) are generally unique to the particular architecture of a computer's central processing unit (CPU). For instance, an ARM architecture CPU (such as may be found in a smartphone or a hand-held videogame) cannot understand the machine language of an x86 CPU that might be in a PC.[j] Historically a significant number of other CPU architectures were created and saw extensive use, notably including the MOS Technology 6502 and 6510 in addition to the Zilog Z80. Although considerably easier than in machine language, writing long programs in assembly language is often difficult and is also error prone. Therefore, most practical programs are written in more abstract high-level programming languages that are able to express the needs of the programmer more conveniently (and thereby help reduce programmer error). High level languages are usually "compiled" into machine language (or sometimes into assembly language and then into machine language) using another computer program called a compiler.[k] High level languages are less related to the workings of the target computer than assembly language, and more related to the language and structure of the problem(s) to be solved by the final program. It is therefore often possible to use different compilers to translate the same high level language program into the machine language of many different types of computer. This is part of the means by which software like video games may be made available for different computer architectures such as personal computers and various video game consoles. Program design of small programs is relatively simple and involves the analysis of the problem, collection of inputs, using the programming constructs within languages, devising or using established procedures and algorithms, providing data for output devices and solutions to the problem as applicable. As problems become larger and more complex, features such as subprograms, modules, formal documentation, and new paradigms such as object-oriented programming are encountered. Large programs involving thousands of line of code and more require formal software methodologies. The task of developing large software systems presents a significant intellectual challenge. Producing software with an acceptably high reliability within a predictable schedule and budget has historically been difficult; the academic and professional discipline of software engineering concentrates specifically on this challenge. Errors in computer programs are called "bugs". They may be benign and not affect the usefulness of the program, or have only subtle effects. However, in some cases they may cause the program or the entire system to "hang", becoming unresponsive to input such as mouse clicks or keystrokes, to completely fail, or to crash. Otherwise benign bugs may sometimes be harnessed for malicious intent by an unscrupulous user writing an exploit, code designed to take advantage of a bug and disrupt a computer's proper execution. Bugs are usually not the fault of the computer. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design.[l] Admiral Grace Hopper, an American computer scientist and developer of the first compiler, is credited for having first used the term "bugs" in computing after a dead moth was found shorting a relay in the Harvard Mark II computer in September 1947. Networking and the Internet Computers have been used to coordinate information between multiple physical locations since the 1950s. The U.S. military's SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems such as Sabre. In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. The effort was funded by ARPA (now DARPA), and the computer network that resulted was called the ARPANET. Logic gates are a common abstraction which can apply to most of the above digital or analog paradigms. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a minimum capability (being Turing-complete) is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, any type of computer (netbook, supercomputer, cellular automaton, etc.) is able to perform the same computational tasks, given enough time and storage capacity. In the 20th century, artificial intelligence systems were predominantly symbolic: they executed code that was explicitly programmed by software developers. Machine learning models, however, have a set parameters that are adjusted throughout training, so that the model learns to accomplish a task based on the provided data. The efficiency of machine learning (and in particular of neural networks) has rapidly improved with progress in hardware for parallel computing, mainly graphics processing units (GPUs). Some large language models are able to control computers or robots. AI progress may lead to the creation of artificial general intelligence (AGI), a type of AI that could accomplish virtually any intellectual task at least as well as humans. Professions and organizations As the use of computers has spread throughout society, there are an increasing number of careers involving computers. The need for computers to work well together and to be able to exchange information has spawned the need for many standards organizations, clubs and societies of both a formal and informal nature. See also Notes References Sources External links
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Contents Computer A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs, which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation, or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of computers and users. Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II, both electromechanical and using thermionic valves. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power, and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (Moore's law noted that counts doubled every two years), leading to the Digital Revolution during the late 20th and early 21st centuries. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joysticks, etc.), output devices (monitors, printers, etc.), and input/output devices that perform both functions (e.g. touchscreens). Peripheral devices allow information to be retrieved from an external source, and they enable the results of operations to be saved and retrieved. Etymology It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest computer of Times, and the best Arithmetician that euer [sic] breathed, and he reduceth thy dayes into a short number." This usage of the term referred to a human computer, a person who carried out calculations or computations. The word continued to have the same meaning until the middle of the 20th century. During the latter part of this period, women were often hired as computers because they could be paid less than their male counterparts. By 1943, most human computers were women. The Online Etymology Dictionary gives the first attested use of computer in the 1640s, meaning 'one who calculates'; this is an "agent noun from compute (v.)". The Online Etymology Dictionary states that the use of the term to mean "'calculating machine' (of any type) is from 1897." The Online Etymology Dictionary indicates that the "modern use" of the term, to mean 'programmable digital electronic computer' dates from "1945 under this name; [in a] theoretical [sense] from 1937, as Turing machine". The name has remained, although modern computers are capable of many higher-level functions. History Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with fingers. The earliest counting device was most likely a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres, cones, etc.) which represented counts of items, likely livestock or grains, sealed in hollow unbaked clay containers.[a] The use of counting rods is one example. The abacus was initially used for arithmetic tasks. The Roman abacus was developed from devices used in Babylonia as early as 2400 BCE. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price. It was designed to calculate astronomical positions. It was discovered in 1901 in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to approximately c. 100 BCE. Devices of comparable complexity to the Antikythera mechanism would not reappear until the fourteenth century. Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BCE and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, c. 1000 AD. The sector, a calculating instrument used for solving problems in proportion, trigonometry, multiplication and division, and for various functions, such as squares and cube roots, was developed in the late 16th century and found application in gunnery, surveying and navigation. The planimeter was a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. The slide rule was invented around 1620–1630, by the English clergyman William Oughtred, shortly after the publication of the concept of the logarithm. It is a hand-operated analog computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time and distance calculations on light aircraft. In the 1770s, Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automaton) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. In 1831–1835, mathematician and engineer Giovanni Plana devised a Perpetual Calendar machine, which through a system of pulleys and cylinders could predict the perpetual calendar for every year from 0 CE (that is, 1 BCE) to 4000 CE, keeping track of leap years and varying day length. The tide-predicting machine invented by the Scottish scientist Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location. The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. In 1876, Sir William Thomson had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators. In a differential analyzer, the output of one integrator drove the input of the next integrator, or a graphing output. The torque amplifier was the advance that allowed these machines to work. Starting in the 1920s, Vannevar Bush and others developed mechanical differential analyzers. In the 1890s, the Spanish engineer Leonardo Torres Quevedo began to develop a series of advanced analog machines that could solve real and complex roots of polynomials, which were published in 1901 by the Paris Academy of Sciences. Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer", he conceptualized and invented the first mechanical computer in the early 19th century. After working on his difference engine he announced his invention in 1822, in a paper to the Royal Astronomical Society, titled "Note on the application of machinery to the computation of astronomical and mathematical tables". He also designed to aid in navigational calculations, in 1833 he realized that a much more general design, an analytical engine, was possible. The input of programs and data was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom. For output, the machine would have a printer, a curve plotter and a bell. The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. The machine was about a century ahead of its time. All the parts for his machine had to be made by hand – this was a major problem for a device with thousands of parts. Eventually, the project was dissolved with the decision of the British Government to cease funding. Babbage's failure to complete the analytical engine can be chiefly attributed to political and financial difficulties as well as his desire to develop an increasingly sophisticated computer and to move ahead faster than anyone else could follow. Nevertheless, his son, Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. In his work Essays on Automatics published in 1914, Leonardo Torres Quevedo wrote a brief history of Babbage's efforts at constructing a mechanical Difference Engine and Analytical Engine. The paper contains a design of a machine capable to calculate formulas like a x ( y − z ) 2 {\displaystyle a^{x}(y-z)^{2}} , for a sequence of sets of values. The whole machine was to be controlled by a read-only program, which was complete with provisions for conditional branching. He also introduced the idea of floating-point arithmetic. In 1920, to celebrate the 100th anniversary of the invention of the arithmometer, Torres presented in Paris the Electromechanical Arithmometer, which allowed a user to input arithmetic problems through a keyboard, and computed and printed the results, demonstrating the feasibility of an electromechanical analytical engine. During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson (later to become Lord Kelvin) in 1872. The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson, the elder brother of the more famous Sir William Thomson. The art of mechanical analog computing reached its zenith with the differential analyzer, completed in 1931 by Vannevar Bush at MIT. By the 1950s, the success of digital electronic computers had spelled the end for most analog computing machines, but analog computers remained in use during the 1950s in some specialized applications such as education (slide rule) and aircraft (control systems).[citation needed] Claude Shannon's 1937 master's thesis laid the foundations of digital computing, with his insight of applying Boolean algebra to the analysis and synthesis of switching circuits being the basic concept which underlies all electronic digital computers. By 1938, the United States Navy had developed the Torpedo Data Computer, an electromechanical analog computer for submarines that used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II, similar devices were developed in other countries. Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939 in Berlin, was one of the earliest examples of an electromechanical relay computer. In 1941, Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer. The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. Program code was supplied on punched film while data could be stored in 64 words of memory or supplied from the keyboard. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers. Rather than the harder-to-implement decimal system (used in Charles Babbage's earlier design), using a binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. The Z3 was not itself a universal computer but could be extended to be Turing complete. Zuse's next computer, the Z4, became the world's first commercial computer; after initial delay due to the Second World War, it was completed in 1950 and delivered to the ETH Zurich. The computer was manufactured by Zuse's own company, Zuse KG, which was founded in 1941 as the first company with the sole purpose of developing computers in Berlin. The Z4 served as the inspiration for the construction of the ERMETH, the first Swiss computer and one of the first in Europe. Purely electronic circuit elements soon replaced their mechanical and electromechanical equivalents, at the same time that digital calculation replaced analog. The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation five years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes. In the US, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed and tested the Atanasoff–Berry Computer (ABC) in 1942, the first "automatic electronic digital computer". This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotating drum for memory. During World War II, the British code-breakers at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes which were often run by women. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February. Colossus was the world's first electronic digital programmable computer. It used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Colossus Mark I contained 1,500 thermionic valves (tubes), but Mark II with 2,400 valves, was both five times faster and simpler to operate than Mark I, greatly speeding the decoding process. The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. Although the ENIAC was similar to the Colossus, it was much faster, more flexible, and it was Turing-complete. Like the Colossus, a "program" on the ENIAC was defined by the states of its patch cables and switches, a far cry from the stored program electronic machines that came later. Once a program was written, it had to be mechanically set into the machine with manual resetting of plugs and switches. The programmers of the ENIAC were six women, often known collectively as the "ENIAC girls". It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors. The principle of the modern computer was proposed by Alan Turing in his seminal 1936 paper, On Computable Numbers. Turing proposed a simple device that he called "Universal Computing machine" and that is now known as a universal Turing machine. He proved that such a machine is capable of computing anything that is computable by executing instructions (program) stored on tape, allowing the machine to be programmable. The fundamental concept of Turing's design is the stored program, where all the instructions for computing are stored in memory. Von Neumann acknowledged that the central concept of the modern computer was due to this paper. Turing machines are to this day a central object of study in theory of computation. Except for the limitations imposed by their finite memory stores, modern computers are said to be Turing-complete, which is to say, they have algorithm execution capability equivalent to a universal Turing machine. Early computing machines had fixed programs. Changing its function required the re-wiring and re-structuring of the machine. With the proposal of the stored-program computer this changed. A stored-program computer includes by design an instruction set and can store in memory a set of instructions (a program) that details the computation. The theoretical basis for the stored-program computer was laid out by Alan Turing in his 1936 paper. In 1945, Turing joined the National Physical Laboratory and began work on developing an electronic stored-program digital computer. His 1945 report "Proposed Electronic Calculator" was the first specification for such a device. John von Neumann at the University of Pennsylvania also circulated his First Draft of a Report on the EDVAC in 1945. The Manchester Baby was the world's first stored-program computer. It was built at the University of Manchester in England by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948. It was designed as a testbed for the Williams tube, the first random-access digital storage device. Although the computer was described as "small and primitive" by a 1998 retrospective, it was the first working machine to contain all of the elements essential to a modern electronic computer. As soon as the Baby had demonstrated the feasibility of its design, a project began at the university to develop it into a practically useful computer, the Manchester Mark 1. The Mark 1 in turn quickly became the prototype for the Ferranti Mark 1, the world's first commercially available general-purpose computer. Built by Ferranti, it was delivered to the University of Manchester in February 1951. At least seven of these later machines were delivered between 1953 and 1957, one of them to Shell labs in Amsterdam. In October 1947 the directors of British catering company J. Lyons & Company decided to take an active role in promoting the commercial development of computers. Lyons's LEO I computer, modelled closely on the Cambridge EDSAC of 1949, became operational in April 1951 and ran the world's first routine office computer job. The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947, which was followed by Shockley's bipolar junction transistor in 1948. From 1955 onwards, transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat. Junction transistors were much more reliable than vacuum tubes and had longer, indefinite, service life. Transistorized computers could contain tens of thousands of binary logic circuits in a relatively compact space. However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. At the University of Manchester, a team under the leadership of Tom Kilburn designed and built a machine using the newly developed transistors instead of valves. Their first transistorized computer and the first in the world, was operational by 1953, and a second version was completed there in April 1955. However, the machine did make use of valves to generate its 125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer. That distinction goes to the Harwell CADET of 1955, built by the electronics division of the Atomic Energy Research Establishment at Harwell. The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented at Bell Labs between 1955 and 1960 and was the first truly compact transistor that could be miniaturized and mass-produced for a wide range of uses. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. In addition to data processing, it also enabled the practical use of MOS transistors as memory cell storage elements, leading to the development of MOS semiconductor memory, which replaced earlier magnetic-core memory in computers. The MOSFET led to the microcomputer revolution, and became the driving force behind the computer revolution. The MOSFET is the most widely used transistor in computers, and is the fundamental building block of digital electronics. The next great advance in computing power came with the advent of the integrated circuit (IC). The idea of the integrated circuit was first conceived by a radar scientist working for the Royal Radar Establishment of the Ministry of Defence, Geoffrey W.A. Dummer. Dummer presented the first public description of an integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, D.C., on 7 May 1952. The first working ICs were invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958. In his patent application of 6 February 1959, Kilby described his new device as "a body of semiconductor material ... wherein all the components of the electronic circuit are completely integrated". However, Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (IC) chip. Kilby's IC had external wire connections, which made it difficult to mass-produce. Noyce also came up with his own idea of an integrated circuit half a year later than Kilby. Noyce's invention was the first true monolithic IC chip. His chip solved many practical problems that Kilby's had not. Produced at Fairchild Semiconductor, it was made of silicon, whereas Kilby's chip was made of germanium. Noyce's monolithic IC was fabricated using the planar process, developed by his colleague Jean Hoerni in early 1959. In turn, the planar process was based on Carl Frosch and Lincoln Derick work on semiconductor surface passivation by silicon dioxide. Modern monolithic ICs are predominantly MOS (metal–oxide–semiconductor) integrated circuits, built from MOSFETs (MOS transistors). The earliest experimental MOS IC to be fabricated was a 16-transistor chip built by Fred Heiman and Steven Hofstein at RCA in 1962. General Microelectronics later introduced the first commercial MOS IC in 1964, developed by Robert Norman. Following the development of the self-aligned gate (silicon-gate) MOS transistor by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967, the first silicon-gate MOS IC with self-aligned gates was developed by Federico Faggin at Fairchild Semiconductor in 1968. The MOSFET has since become the most critical device component in modern ICs. The development of the MOS integrated circuit led to the invention of the microprocessor, and heralded an explosion in the commercial and personal use of computers. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Federico Faggin with his silicon-gate MOS IC technology, along with Ted Hoff, Masatoshi Shima and Stanley Mazor at Intel.[b] In the early 1970s, MOS IC technology enabled the integration of more than 10,000 transistors on a single chip. System on a Chip (SoCs) are complete computers on a microchip (or chip) the size of a coin. They may or may not have integrated RAM and flash memory. If not integrated, the RAM is usually placed directly above (known as Package on package) or below (on the opposite side of the circuit board) the SoC, and the flash memory is usually placed right next to the SoC. This is done to improve data transfer speeds, as the data signals do not have to travel long distances. Since ENIAC in 1945, computers have advanced enormously, with modern SoCs (such as the Snapdragon 865) being the size of a coin while also being hundreds of thousands of times more powerful than ENIAC, integrating billions of transistors, and consuming only a few watts of power. The first mobile computers were heavy and ran from mains power. The 50 lb (23 kg) IBM 5100 was an early example. Later portables such as the Osborne 1 and Compaq Portable were considerably lighter but still needed to be plugged in. The first laptops, such as the Grid Compass, removed this requirement by incorporating batteries – and with the continued miniaturization of computing resources and advancements in portable battery life, portable computers grew in popularity in the 2000s. The same developments allowed manufacturers to integrate computing resources into cellular mobile phones by the early 2000s. These smartphones and tablets run on a variety of operating systems and recently became the dominant computing device on the market. These are powered by System on a Chip (SoCs), which are complete computers on a microchip the size of a coin. Types Computers can be classified in a number of different ways, including: A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer,[c] a typical modern definition of a computer is: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information." According to this definition, any device that processes information qualifies as a computer. Hardware The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input devices are all hardware. A general-purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires. Inside each of these parts are thousands to trillions of small electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a "1", and when off it represents a "0" (in positive logic representation). The circuits are arranged in logic gates so that one or more of the circuits may control the state of one or more of the other circuits. Input devices are the means by which the operations of a computer are controlled and it is provided with data. Examples include: Output devices are the means by which a computer provides the results of its calculations in a human-accessible form. Examples include: The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into control signals that activate other parts of the computer.[e] Control systems in advanced computers may change the order of execution of some instructions to improve performance. A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.[f] The control system's function is as follows— this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU: Since the program counter is (conceptually) just another set of memory cells, it can be changed by calculations done in the ALU. Adding 100 to the program counter would cause the next instruction to be read from a place 100 locations further down the program. Instructions that modify the program counter are often known as "jumps" and allow for loops (instructions that are repeated by the computer) and often conditional instruction execution (both examples of control flow). The sequence of operations that the control unit goes through to process an instruction is in itself like a short computer program, and indeed, in some more complex CPU designs, there is another yet smaller computer called a microsequencer, which runs a microcode program that causes all of these events to happen. The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components. Since the 1970s, CPUs have typically been constructed on a single MOS integrated circuit chip called a microprocessor. The ALU is capable of performing two classes of operations: arithmetic and logic. The set of arithmetic operations that a particular ALU supports may be limited to addition and subtraction, or might include multiplication, division, trigonometry functions such as sine, cosine, etc., and square roots. Some can operate only on whole numbers (integers) while others use floating point to represent real numbers, albeit with limited precision. However, any computer that is capable of performing just the simplest operations can be programmed to break down the more complex operations into simple steps that it can perform. Therefore, any computer can be programmed to perform any arithmetic operation—although it will take more time to do so if its ALU does not directly support the operation. An ALU may also compare numbers and return Boolean truth values (true or false) depending on whether one is equal to, greater than or less than the other ("is 64 greater than 65?"). Logic operations involve Boolean logic: AND, OR, XOR, and NOT. These can be useful for creating complicated conditional statements and processing Boolean logic. Superscalar computers may contain multiple ALUs, allowing them to process several instructions simultaneously. Graphics processors and computers with SIMD and MIMD features often contain ALUs that can perform arithmetic on vectors and matrices. A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered "address" and can store a single number. The computer can be instructed to "put the number 123 into the cell numbered 1357" or to "add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595." The information stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers. In almost all modern computers, each memory cell is set up to store binary numbers in groups of eight bits (called a byte). Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or −128 to +127. To store larger numbers, several consecutive bytes may be used (typically, two, four or eight). When negative numbers are required, they are usually stored in two's complement notation. Other arrangements are possible, but are usually not seen outside of specialized applications or historical contexts. A computer can store any kind of information in memory if it can be represented numerically. Modern computers have billions or even trillions of bytes of memory. The CPU contains a special set of memory cells called registers that can be read and written to much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to the ALU and control units) greatly increases the computer's speed. Computer main memory comes in two principal varieties: RAM can be read and written to anytime the CPU commands it, but ROM is preloaded with data and software that never changes, therefore the CPU can only read from it. ROM is typically used to store the computer's initial start-up instructions. In general, the contents of RAM are erased when the power to the computer is turned off, but ROM retains its data indefinitely. In a PC, the ROM contains a specialized program called the BIOS that orchestrates loading the computer's operating system from the hard disk drive into RAM whenever the computer is turned on or reset. In embedded computers, which frequently do not have disk drives, all of the required software may be stored in ROM. Software stored in ROM is often called firmware, because it is notionally more like hardware than software. Flash memory blurs the distinction between ROM and RAM, as it retains its data when turned off but is also rewritable. It is typically much slower than conventional ROM and RAM however, so its use is restricted to applications where high speed is unnecessary.[g] In more sophisticated computers there may be one or more RAM cache memories, which are slower than registers but faster than main memory. Generally computers with this sort of cache are designed to move frequently needed data into the cache automatically, often without the need for any intervention on the programmer's part. I/O is the means by which a computer exchanges information with the outside world. Devices that provide input or output to the computer are called peripherals. On a typical personal computer, peripherals include input devices like the keyboard and mouse, and output devices such as the display and printer. Hard disk drives, floppy disk drives and optical disc drives serve as both input and output devices. Computer networking is another form of I/O. I/O devices are often complex computers in their own right, with their own CPU and memory. A graphics processing unit might contain fifty or more tiny computers that perform the calculations necessary to display 3D graphics.[citation needed] Modern desktop computers contain many smaller computers that assist the main CPU in performing I/O. A 2016-era flat screen display contains its own computer circuitry. While a computer may be viewed as running one gigantic program stored in its main memory, in some systems it is necessary to give the appearance of running several programs simultaneously. This is achieved by multitasking, i.e. having the computer switch rapidly between running each program in turn. One means by which this is done is with a special signal called an interrupt, which can periodically cause the computer to stop executing instructions where it was and do something else instead. By remembering where it was executing prior to the interrupt, the computer can return to that task later. If several programs are running "at the same time". Then the interrupt generator might be causing several hundred interrupts per second, causing a program switch each time. Since modern computers typically execute instructions several orders of magnitude faster than human perception, it may appear that many programs are running at the same time, even though only one is ever executing in any given instant. This method of multitasking is sometimes termed "time-sharing" since each program is allocated a "slice" of time in turn. Before the era of inexpensive computers, the principal use for multitasking was to allow many people to share the same computer. Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss. Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed in only large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result. Supercomputers in particular often have highly unique architectures that differ significantly from the basic stored-program architecture and from general-purpose computers.[h] They often feature thousands of CPUs, customized high-speed interconnects, and specialized computing hardware. Such designs tend to be useful for only specialized tasks due to the large scale of program organization required to use most of the available resources at once. Supercomputers usually see usage in large-scale simulation, graphics rendering, and cryptography applications, as well as with other so-called "embarrassingly parallel" tasks. Software Software is the part of a computer system that consists of the encoded information that determines the computer's operation, such as data or instructions on how to process the data. In contrast to the physical hardware from which the system is built, software is immaterial. Software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. It is often divided into system software and application software. Computer hardware and software require each other and neither is useful on its own. When software is stored in hardware that cannot easily be modified, such as with BIOS ROM in an IBM PC compatible computer, it is sometimes called "firmware". The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write, and due to the complexity of the task almost certainly contain errors. This section applies to most common RAM machine–based computers. In most cases, computer instructions are simple: add one number to another, move some data from one location to another, send a message to some external device, etc. These instructions are read from the computer's memory and are generally carried out (executed) in the order they were given. However, there are usually specialized instructions to tell the computer to jump ahead or backwards to some other place in the program and to carry on executing from there. These are called "jump" instructions (or branches). Furthermore, jump instructions may be made to happen conditionally so that different sequences of instructions may be used depending on the result of some previous calculation or some external event. Many computers directly support subroutines by providing a type of jump that "remembers" the location it jumped from and another instruction to return to the instruction following that jump instruction. Program execution might be likened to reading a book. While a person will normally read each word and line in sequence, they may at times jump back to an earlier place in the text or skip sections that are not of interest. Similarly, a computer may sometimes go back and repeat the instructions in some section of the program over and over again until some internal condition is met. This is called the flow of control within the program and it is what allows the computer to perform tasks repeatedly without human intervention. Comparatively, a person using a pocket calculator can perform a basic arithmetic operation such as adding two numbers with just a few button presses. But to add together all of the numbers from 1 to 1,000 would take thousands of button presses and a lot of time, with a near certainty of making a mistake. On the other hand, a computer may be programmed to do this with just a few simple instructions. The following example is written in the MIPS assembly language: Once told to run this program, the computer will perform the repetitive addition task without further human intervention. It will almost never make a mistake and a modern PC can complete the task in a fraction of a second. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode; the command to multiply them would have a different opcode, and so on. The simplest computers are able to perform any of a handful of different instructions; the more complex computers have several hundred to choose from, each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of these instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer in the same way as numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on. This is called the Harvard architecture after the Harvard Mark I computer. Modern von Neumann computers display some traits of the Harvard architecture in their designs, such as in CPU caches. While it is possible to write computer programs as long lists of numbers (machine language) and while this technique was used with many early computers,[i] it is extremely tedious and potentially error-prone to do so in practice, especially for complicated programs. Instead, each basic instruction can be given a short name that is indicative of its function and easy to remember – a mnemonic such as ADD, SUB, MULT or JUMP. These mnemonics are collectively known as a computer's assembly language. Converting programs written in assembly language into something the computer can actually understand (machine language) is usually done by a computer program called an assembler. A programming language is a notation system for writing the source code from which a computer program is produced. Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques. There are thousands of programming languages—some intended for general purpose programming, others useful for only highly specialized applications. Machine languages and the assembly languages that represent them (collectively termed low-level programming languages) are generally unique to the particular architecture of a computer's central processing unit (CPU). For instance, an ARM architecture CPU (such as may be found in a smartphone or a hand-held videogame) cannot understand the machine language of an x86 CPU that might be in a PC.[j] Historically a significant number of other CPU architectures were created and saw extensive use, notably including the MOS Technology 6502 and 6510 in addition to the Zilog Z80. Although considerably easier than in machine language, writing long programs in assembly language is often difficult and is also error prone. Therefore, most practical programs are written in more abstract high-level programming languages that are able to express the needs of the programmer more conveniently (and thereby help reduce programmer error). High level languages are usually "compiled" into machine language (or sometimes into assembly language and then into machine language) using another computer program called a compiler.[k] High level languages are less related to the workings of the target computer than assembly language, and more related to the language and structure of the problem(s) to be solved by the final program. It is therefore often possible to use different compilers to translate the same high level language program into the machine language of many different types of computer. This is part of the means by which software like video games may be made available for different computer architectures such as personal computers and various video game consoles. Program design of small programs is relatively simple and involves the analysis of the problem, collection of inputs, using the programming constructs within languages, devising or using established procedures and algorithms, providing data for output devices and solutions to the problem as applicable. As problems become larger and more complex, features such as subprograms, modules, formal documentation, and new paradigms such as object-oriented programming are encountered. Large programs involving thousands of line of code and more require formal software methodologies. The task of developing large software systems presents a significant intellectual challenge. Producing software with an acceptably high reliability within a predictable schedule and budget has historically been difficult; the academic and professional discipline of software engineering concentrates specifically on this challenge. Errors in computer programs are called "bugs". They may be benign and not affect the usefulness of the program, or have only subtle effects. However, in some cases they may cause the program or the entire system to "hang", becoming unresponsive to input such as mouse clicks or keystrokes, to completely fail, or to crash. Otherwise benign bugs may sometimes be harnessed for malicious intent by an unscrupulous user writing an exploit, code designed to take advantage of a bug and disrupt a computer's proper execution. Bugs are usually not the fault of the computer. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design.[l] Admiral Grace Hopper, an American computer scientist and developer of the first compiler, is credited for having first used the term "bugs" in computing after a dead moth was found shorting a relay in the Harvard Mark II computer in September 1947. Networking and the Internet Computers have been used to coordinate information between multiple physical locations since the 1950s. The U.S. military's SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems such as Sabre. In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. The effort was funded by ARPA (now DARPA), and the computer network that resulted was called the ARPANET. Logic gates are a common abstraction which can apply to most of the above digital or analog paradigms. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a minimum capability (being Turing-complete) is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, any type of computer (netbook, supercomputer, cellular automaton, etc.) is able to perform the same computational tasks, given enough time and storage capacity. In the 20th century, artificial intelligence systems were predominantly symbolic: they executed code that was explicitly programmed by software developers. Machine learning models, however, have a set parameters that are adjusted throughout training, so that the model learns to accomplish a task based on the provided data. The efficiency of machine learning (and in particular of neural networks) has rapidly improved with progress in hardware for parallel computing, mainly graphics processing units (GPUs). Some large language models are able to control computers or robots. AI progress may lead to the creation of artificial general intelligence (AGI), a type of AI that could accomplish virtually any intellectual task at least as well as humans. Professions and organizations As the use of computers has spread throughout society, there are an increasing number of careers involving computers. The need for computers to work well together and to be able to exchange information has spawned the need for many standards organizations, clubs and societies of both a formal and informal nature. See also Notes References Sources External links
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Contents Computer A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs, which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation, or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of computers and users. Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II, both electromechanical and using thermionic valves. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power, and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (Moore's law noted that counts doubled every two years), leading to the Digital Revolution during the late 20th and early 21st centuries. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joysticks, etc.), output devices (monitors, printers, etc.), and input/output devices that perform both functions (e.g. touchscreens). Peripheral devices allow information to be retrieved from an external source, and they enable the results of operations to be saved and retrieved. Etymology It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest computer of Times, and the best Arithmetician that euer [sic] breathed, and he reduceth thy dayes into a short number." This usage of the term referred to a human computer, a person who carried out calculations or computations. The word continued to have the same meaning until the middle of the 20th century. During the latter part of this period, women were often hired as computers because they could be paid less than their male counterparts. By 1943, most human computers were women. The Online Etymology Dictionary gives the first attested use of computer in the 1640s, meaning 'one who calculates'; this is an "agent noun from compute (v.)". The Online Etymology Dictionary states that the use of the term to mean "'calculating machine' (of any type) is from 1897." The Online Etymology Dictionary indicates that the "modern use" of the term, to mean 'programmable digital electronic computer' dates from "1945 under this name; [in a] theoretical [sense] from 1937, as Turing machine". The name has remained, although modern computers are capable of many higher-level functions. History Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with fingers. The earliest counting device was most likely a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres, cones, etc.) which represented counts of items, likely livestock or grains, sealed in hollow unbaked clay containers.[a] The use of counting rods is one example. The abacus was initially used for arithmetic tasks. The Roman abacus was developed from devices used in Babylonia as early as 2400 BCE. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price. It was designed to calculate astronomical positions. It was discovered in 1901 in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to approximately c. 100 BCE. Devices of comparable complexity to the Antikythera mechanism would not reappear until the fourteenth century. Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BCE and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, c. 1000 AD. The sector, a calculating instrument used for solving problems in proportion, trigonometry, multiplication and division, and for various functions, such as squares and cube roots, was developed in the late 16th century and found application in gunnery, surveying and navigation. The planimeter was a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. The slide rule was invented around 1620–1630, by the English clergyman William Oughtred, shortly after the publication of the concept of the logarithm. It is a hand-operated analog computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time and distance calculations on light aircraft. In the 1770s, Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automaton) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. In 1831–1835, mathematician and engineer Giovanni Plana devised a Perpetual Calendar machine, which through a system of pulleys and cylinders could predict the perpetual calendar for every year from 0 CE (that is, 1 BCE) to 4000 CE, keeping track of leap years and varying day length. The tide-predicting machine invented by the Scottish scientist Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location. The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. In 1876, Sir William Thomson had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators. In a differential analyzer, the output of one integrator drove the input of the next integrator, or a graphing output. The torque amplifier was the advance that allowed these machines to work. Starting in the 1920s, Vannevar Bush and others developed mechanical differential analyzers. In the 1890s, the Spanish engineer Leonardo Torres Quevedo began to develop a series of advanced analog machines that could solve real and complex roots of polynomials, which were published in 1901 by the Paris Academy of Sciences. Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer", he conceptualized and invented the first mechanical computer in the early 19th century. After working on his difference engine he announced his invention in 1822, in a paper to the Royal Astronomical Society, titled "Note on the application of machinery to the computation of astronomical and mathematical tables". He also designed to aid in navigational calculations, in 1833 he realized that a much more general design, an analytical engine, was possible. The input of programs and data was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom. For output, the machine would have a printer, a curve plotter and a bell. The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. The machine was about a century ahead of its time. All the parts for his machine had to be made by hand – this was a major problem for a device with thousands of parts. Eventually, the project was dissolved with the decision of the British Government to cease funding. Babbage's failure to complete the analytical engine can be chiefly attributed to political and financial difficulties as well as his desire to develop an increasingly sophisticated computer and to move ahead faster than anyone else could follow. Nevertheless, his son, Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. In his work Essays on Automatics published in 1914, Leonardo Torres Quevedo wrote a brief history of Babbage's efforts at constructing a mechanical Difference Engine and Analytical Engine. The paper contains a design of a machine capable to calculate formulas like a x ( y − z ) 2 {\displaystyle a^{x}(y-z)^{2}} , for a sequence of sets of values. The whole machine was to be controlled by a read-only program, which was complete with provisions for conditional branching. He also introduced the idea of floating-point arithmetic. In 1920, to celebrate the 100th anniversary of the invention of the arithmometer, Torres presented in Paris the Electromechanical Arithmometer, which allowed a user to input arithmetic problems through a keyboard, and computed and printed the results, demonstrating the feasibility of an electromechanical analytical engine. During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson (later to become Lord Kelvin) in 1872. The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson, the elder brother of the more famous Sir William Thomson. The art of mechanical analog computing reached its zenith with the differential analyzer, completed in 1931 by Vannevar Bush at MIT. By the 1950s, the success of digital electronic computers had spelled the end for most analog computing machines, but analog computers remained in use during the 1950s in some specialized applications such as education (slide rule) and aircraft (control systems).[citation needed] Claude Shannon's 1937 master's thesis laid the foundations of digital computing, with his insight of applying Boolean algebra to the analysis and synthesis of switching circuits being the basic concept which underlies all electronic digital computers. By 1938, the United States Navy had developed the Torpedo Data Computer, an electromechanical analog computer for submarines that used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II, similar devices were developed in other countries. Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939 in Berlin, was one of the earliest examples of an electromechanical relay computer. In 1941, Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer. The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. Program code was supplied on punched film while data could be stored in 64 words of memory or supplied from the keyboard. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers. Rather than the harder-to-implement decimal system (used in Charles Babbage's earlier design), using a binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. The Z3 was not itself a universal computer but could be extended to be Turing complete. Zuse's next computer, the Z4, became the world's first commercial computer; after initial delay due to the Second World War, it was completed in 1950 and delivered to the ETH Zurich. The computer was manufactured by Zuse's own company, Zuse KG, which was founded in 1941 as the first company with the sole purpose of developing computers in Berlin. The Z4 served as the inspiration for the construction of the ERMETH, the first Swiss computer and one of the first in Europe. Purely electronic circuit elements soon replaced their mechanical and electromechanical equivalents, at the same time that digital calculation replaced analog. The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation five years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes. In the US, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed and tested the Atanasoff–Berry Computer (ABC) in 1942, the first "automatic electronic digital computer". This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotating drum for memory. During World War II, the British code-breakers at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes which were often run by women. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February. Colossus was the world's first electronic digital programmable computer. It used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Colossus Mark I contained 1,500 thermionic valves (tubes), but Mark II with 2,400 valves, was both five times faster and simpler to operate than Mark I, greatly speeding the decoding process. The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. Although the ENIAC was similar to the Colossus, it was much faster, more flexible, and it was Turing-complete. Like the Colossus, a "program" on the ENIAC was defined by the states of its patch cables and switches, a far cry from the stored program electronic machines that came later. Once a program was written, it had to be mechanically set into the machine with manual resetting of plugs and switches. The programmers of the ENIAC were six women, often known collectively as the "ENIAC girls". It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors. The principle of the modern computer was proposed by Alan Turing in his seminal 1936 paper, On Computable Numbers. Turing proposed a simple device that he called "Universal Computing machine" and that is now known as a universal Turing machine. He proved that such a machine is capable of computing anything that is computable by executing instructions (program) stored on tape, allowing the machine to be programmable. The fundamental concept of Turing's design is the stored program, where all the instructions for computing are stored in memory. Von Neumann acknowledged that the central concept of the modern computer was due to this paper. Turing machines are to this day a central object of study in theory of computation. Except for the limitations imposed by their finite memory stores, modern computers are said to be Turing-complete, which is to say, they have algorithm execution capability equivalent to a universal Turing machine. Early computing machines had fixed programs. Changing its function required the re-wiring and re-structuring of the machine. With the proposal of the stored-program computer this changed. A stored-program computer includes by design an instruction set and can store in memory a set of instructions (a program) that details the computation. The theoretical basis for the stored-program computer was laid out by Alan Turing in his 1936 paper. In 1945, Turing joined the National Physical Laboratory and began work on developing an electronic stored-program digital computer. His 1945 report "Proposed Electronic Calculator" was the first specification for such a device. John von Neumann at the University of Pennsylvania also circulated his First Draft of a Report on the EDVAC in 1945. The Manchester Baby was the world's first stored-program computer. It was built at the University of Manchester in England by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948. It was designed as a testbed for the Williams tube, the first random-access digital storage device. Although the computer was described as "small and primitive" by a 1998 retrospective, it was the first working machine to contain all of the elements essential to a modern electronic computer. As soon as the Baby had demonstrated the feasibility of its design, a project began at the university to develop it into a practically useful computer, the Manchester Mark 1. The Mark 1 in turn quickly became the prototype for the Ferranti Mark 1, the world's first commercially available general-purpose computer. Built by Ferranti, it was delivered to the University of Manchester in February 1951. At least seven of these later machines were delivered between 1953 and 1957, one of them to Shell labs in Amsterdam. In October 1947 the directors of British catering company J. Lyons & Company decided to take an active role in promoting the commercial development of computers. Lyons's LEO I computer, modelled closely on the Cambridge EDSAC of 1949, became operational in April 1951 and ran the world's first routine office computer job. The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947, which was followed by Shockley's bipolar junction transistor in 1948. From 1955 onwards, transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat. Junction transistors were much more reliable than vacuum tubes and had longer, indefinite, service life. Transistorized computers could contain tens of thousands of binary logic circuits in a relatively compact space. However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. At the University of Manchester, a team under the leadership of Tom Kilburn designed and built a machine using the newly developed transistors instead of valves. Their first transistorized computer and the first in the world, was operational by 1953, and a second version was completed there in April 1955. However, the machine did make use of valves to generate its 125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer. That distinction goes to the Harwell CADET of 1955, built by the electronics division of the Atomic Energy Research Establishment at Harwell. The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented at Bell Labs between 1955 and 1960 and was the first truly compact transistor that could be miniaturized and mass-produced for a wide range of uses. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. In addition to data processing, it also enabled the practical use of MOS transistors as memory cell storage elements, leading to the development of MOS semiconductor memory, which replaced earlier magnetic-core memory in computers. The MOSFET led to the microcomputer revolution, and became the driving force behind the computer revolution. The MOSFET is the most widely used transistor in computers, and is the fundamental building block of digital electronics. The next great advance in computing power came with the advent of the integrated circuit (IC). The idea of the integrated circuit was first conceived by a radar scientist working for the Royal Radar Establishment of the Ministry of Defence, Geoffrey W.A. Dummer. Dummer presented the first public description of an integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, D.C., on 7 May 1952. The first working ICs were invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958. In his patent application of 6 February 1959, Kilby described his new device as "a body of semiconductor material ... wherein all the components of the electronic circuit are completely integrated". However, Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (IC) chip. Kilby's IC had external wire connections, which made it difficult to mass-produce. Noyce also came up with his own idea of an integrated circuit half a year later than Kilby. Noyce's invention was the first true monolithic IC chip. His chip solved many practical problems that Kilby's had not. Produced at Fairchild Semiconductor, it was made of silicon, whereas Kilby's chip was made of germanium. Noyce's monolithic IC was fabricated using the planar process, developed by his colleague Jean Hoerni in early 1959. In turn, the planar process was based on Carl Frosch and Lincoln Derick work on semiconductor surface passivation by silicon dioxide. Modern monolithic ICs are predominantly MOS (metal–oxide–semiconductor) integrated circuits, built from MOSFETs (MOS transistors). The earliest experimental MOS IC to be fabricated was a 16-transistor chip built by Fred Heiman and Steven Hofstein at RCA in 1962. General Microelectronics later introduced the first commercial MOS IC in 1964, developed by Robert Norman. Following the development of the self-aligned gate (silicon-gate) MOS transistor by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967, the first silicon-gate MOS IC with self-aligned gates was developed by Federico Faggin at Fairchild Semiconductor in 1968. The MOSFET has since become the most critical device component in modern ICs. The development of the MOS integrated circuit led to the invention of the microprocessor, and heralded an explosion in the commercial and personal use of computers. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Federico Faggin with his silicon-gate MOS IC technology, along with Ted Hoff, Masatoshi Shima and Stanley Mazor at Intel.[b] In the early 1970s, MOS IC technology enabled the integration of more than 10,000 transistors on a single chip. System on a Chip (SoCs) are complete computers on a microchip (or chip) the size of a coin. They may or may not have integrated RAM and flash memory. If not integrated, the RAM is usually placed directly above (known as Package on package) or below (on the opposite side of the circuit board) the SoC, and the flash memory is usually placed right next to the SoC. This is done to improve data transfer speeds, as the data signals do not have to travel long distances. Since ENIAC in 1945, computers have advanced enormously, with modern SoCs (such as the Snapdragon 865) being the size of a coin while also being hundreds of thousands of times more powerful than ENIAC, integrating billions of transistors, and consuming only a few watts of power. The first mobile computers were heavy and ran from mains power. The 50 lb (23 kg) IBM 5100 was an early example. Later portables such as the Osborne 1 and Compaq Portable were considerably lighter but still needed to be plugged in. The first laptops, such as the Grid Compass, removed this requirement by incorporating batteries – and with the continued miniaturization of computing resources and advancements in portable battery life, portable computers grew in popularity in the 2000s. The same developments allowed manufacturers to integrate computing resources into cellular mobile phones by the early 2000s. These smartphones and tablets run on a variety of operating systems and recently became the dominant computing device on the market. These are powered by System on a Chip (SoCs), which are complete computers on a microchip the size of a coin. Types Computers can be classified in a number of different ways, including: A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer,[c] a typical modern definition of a computer is: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information." According to this definition, any device that processes information qualifies as a computer. Hardware The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input devices are all hardware. A general-purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires. Inside each of these parts are thousands to trillions of small electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a "1", and when off it represents a "0" (in positive logic representation). The circuits are arranged in logic gates so that one or more of the circuits may control the state of one or more of the other circuits. Input devices are the means by which the operations of a computer are controlled and it is provided with data. Examples include: Output devices are the means by which a computer provides the results of its calculations in a human-accessible form. Examples include: The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into control signals that activate other parts of the computer.[e] Control systems in advanced computers may change the order of execution of some instructions to improve performance. A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.[f] The control system's function is as follows— this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU: Since the program counter is (conceptually) just another set of memory cells, it can be changed by calculations done in the ALU. Adding 100 to the program counter would cause the next instruction to be read from a place 100 locations further down the program. Instructions that modify the program counter are often known as "jumps" and allow for loops (instructions that are repeated by the computer) and often conditional instruction execution (both examples of control flow). The sequence of operations that the control unit goes through to process an instruction is in itself like a short computer program, and indeed, in some more complex CPU designs, there is another yet smaller computer called a microsequencer, which runs a microcode program that causes all of these events to happen. The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components. Since the 1970s, CPUs have typically been constructed on a single MOS integrated circuit chip called a microprocessor. The ALU is capable of performing two classes of operations: arithmetic and logic. The set of arithmetic operations that a particular ALU supports may be limited to addition and subtraction, or might include multiplication, division, trigonometry functions such as sine, cosine, etc., and square roots. Some can operate only on whole numbers (integers) while others use floating point to represent real numbers, albeit with limited precision. However, any computer that is capable of performing just the simplest operations can be programmed to break down the more complex operations into simple steps that it can perform. Therefore, any computer can be programmed to perform any arithmetic operation—although it will take more time to do so if its ALU does not directly support the operation. An ALU may also compare numbers and return Boolean truth values (true or false) depending on whether one is equal to, greater than or less than the other ("is 64 greater than 65?"). Logic operations involve Boolean logic: AND, OR, XOR, and NOT. These can be useful for creating complicated conditional statements and processing Boolean logic. Superscalar computers may contain multiple ALUs, allowing them to process several instructions simultaneously. Graphics processors and computers with SIMD and MIMD features often contain ALUs that can perform arithmetic on vectors and matrices. A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered "address" and can store a single number. The computer can be instructed to "put the number 123 into the cell numbered 1357" or to "add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595." The information stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers. In almost all modern computers, each memory cell is set up to store binary numbers in groups of eight bits (called a byte). Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or −128 to +127. To store larger numbers, several consecutive bytes may be used (typically, two, four or eight). When negative numbers are required, they are usually stored in two's complement notation. Other arrangements are possible, but are usually not seen outside of specialized applications or historical contexts. A computer can store any kind of information in memory if it can be represented numerically. Modern computers have billions or even trillions of bytes of memory. The CPU contains a special set of memory cells called registers that can be read and written to much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to the ALU and control units) greatly increases the computer's speed. Computer main memory comes in two principal varieties: RAM can be read and written to anytime the CPU commands it, but ROM is preloaded with data and software that never changes, therefore the CPU can only read from it. ROM is typically used to store the computer's initial start-up instructions. In general, the contents of RAM are erased when the power to the computer is turned off, but ROM retains its data indefinitely. In a PC, the ROM contains a specialized program called the BIOS that orchestrates loading the computer's operating system from the hard disk drive into RAM whenever the computer is turned on or reset. In embedded computers, which frequently do not have disk drives, all of the required software may be stored in ROM. Software stored in ROM is often called firmware, because it is notionally more like hardware than software. Flash memory blurs the distinction between ROM and RAM, as it retains its data when turned off but is also rewritable. It is typically much slower than conventional ROM and RAM however, so its use is restricted to applications where high speed is unnecessary.[g] In more sophisticated computers there may be one or more RAM cache memories, which are slower than registers but faster than main memory. Generally computers with this sort of cache are designed to move frequently needed data into the cache automatically, often without the need for any intervention on the programmer's part. I/O is the means by which a computer exchanges information with the outside world. Devices that provide input or output to the computer are called peripherals. On a typical personal computer, peripherals include input devices like the keyboard and mouse, and output devices such as the display and printer. Hard disk drives, floppy disk drives and optical disc drives serve as both input and output devices. Computer networking is another form of I/O. I/O devices are often complex computers in their own right, with their own CPU and memory. A graphics processing unit might contain fifty or more tiny computers that perform the calculations necessary to display 3D graphics.[citation needed] Modern desktop computers contain many smaller computers that assist the main CPU in performing I/O. A 2016-era flat screen display contains its own computer circuitry. While a computer may be viewed as running one gigantic program stored in its main memory, in some systems it is necessary to give the appearance of running several programs simultaneously. This is achieved by multitasking, i.e. having the computer switch rapidly between running each program in turn. One means by which this is done is with a special signal called an interrupt, which can periodically cause the computer to stop executing instructions where it was and do something else instead. By remembering where it was executing prior to the interrupt, the computer can return to that task later. If several programs are running "at the same time". Then the interrupt generator might be causing several hundred interrupts per second, causing a program switch each time. Since modern computers typically execute instructions several orders of magnitude faster than human perception, it may appear that many programs are running at the same time, even though only one is ever executing in any given instant. This method of multitasking is sometimes termed "time-sharing" since each program is allocated a "slice" of time in turn. Before the era of inexpensive computers, the principal use for multitasking was to allow many people to share the same computer. Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss. Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed in only large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result. Supercomputers in particular often have highly unique architectures that differ significantly from the basic stored-program architecture and from general-purpose computers.[h] They often feature thousands of CPUs, customized high-speed interconnects, and specialized computing hardware. Such designs tend to be useful for only specialized tasks due to the large scale of program organization required to use most of the available resources at once. Supercomputers usually see usage in large-scale simulation, graphics rendering, and cryptography applications, as well as with other so-called "embarrassingly parallel" tasks. Software Software is the part of a computer system that consists of the encoded information that determines the computer's operation, such as data or instructions on how to process the data. In contrast to the physical hardware from which the system is built, software is immaterial. Software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. It is often divided into system software and application software. Computer hardware and software require each other and neither is useful on its own. When software is stored in hardware that cannot easily be modified, such as with BIOS ROM in an IBM PC compatible computer, it is sometimes called "firmware". The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write, and due to the complexity of the task almost certainly contain errors. This section applies to most common RAM machine–based computers. In most cases, computer instructions are simple: add one number to another, move some data from one location to another, send a message to some external device, etc. These instructions are read from the computer's memory and are generally carried out (executed) in the order they were given. However, there are usually specialized instructions to tell the computer to jump ahead or backwards to some other place in the program and to carry on executing from there. These are called "jump" instructions (or branches). Furthermore, jump instructions may be made to happen conditionally so that different sequences of instructions may be used depending on the result of some previous calculation or some external event. Many computers directly support subroutines by providing a type of jump that "remembers" the location it jumped from and another instruction to return to the instruction following that jump instruction. Program execution might be likened to reading a book. While a person will normally read each word and line in sequence, they may at times jump back to an earlier place in the text or skip sections that are not of interest. Similarly, a computer may sometimes go back and repeat the instructions in some section of the program over and over again until some internal condition is met. This is called the flow of control within the program and it is what allows the computer to perform tasks repeatedly without human intervention. Comparatively, a person using a pocket calculator can perform a basic arithmetic operation such as adding two numbers with just a few button presses. But to add together all of the numbers from 1 to 1,000 would take thousands of button presses and a lot of time, with a near certainty of making a mistake. On the other hand, a computer may be programmed to do this with just a few simple instructions. The following example is written in the MIPS assembly language: Once told to run this program, the computer will perform the repetitive addition task without further human intervention. It will almost never make a mistake and a modern PC can complete the task in a fraction of a second. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode; the command to multiply them would have a different opcode, and so on. The simplest computers are able to perform any of a handful of different instructions; the more complex computers have several hundred to choose from, each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of these instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer in the same way as numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on. This is called the Harvard architecture after the Harvard Mark I computer. Modern von Neumann computers display some traits of the Harvard architecture in their designs, such as in CPU caches. While it is possible to write computer programs as long lists of numbers (machine language) and while this technique was used with many early computers,[i] it is extremely tedious and potentially error-prone to do so in practice, especially for complicated programs. Instead, each basic instruction can be given a short name that is indicative of its function and easy to remember – a mnemonic such as ADD, SUB, MULT or JUMP. These mnemonics are collectively known as a computer's assembly language. Converting programs written in assembly language into something the computer can actually understand (machine language) is usually done by a computer program called an assembler. A programming language is a notation system for writing the source code from which a computer program is produced. Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques. There are thousands of programming languages—some intended for general purpose programming, others useful for only highly specialized applications. Machine languages and the assembly languages that represent them (collectively termed low-level programming languages) are generally unique to the particular architecture of a computer's central processing unit (CPU). For instance, an ARM architecture CPU (such as may be found in a smartphone or a hand-held videogame) cannot understand the machine language of an x86 CPU that might be in a PC.[j] Historically a significant number of other CPU architectures were created and saw extensive use, notably including the MOS Technology 6502 and 6510 in addition to the Zilog Z80. Although considerably easier than in machine language, writing long programs in assembly language is often difficult and is also error prone. Therefore, most practical programs are written in more abstract high-level programming languages that are able to express the needs of the programmer more conveniently (and thereby help reduce programmer error). High level languages are usually "compiled" into machine language (or sometimes into assembly language and then into machine language) using another computer program called a compiler.[k] High level languages are less related to the workings of the target computer than assembly language, and more related to the language and structure of the problem(s) to be solved by the final program. It is therefore often possible to use different compilers to translate the same high level language program into the machine language of many different types of computer. This is part of the means by which software like video games may be made available for different computer architectures such as personal computers and various video game consoles. Program design of small programs is relatively simple and involves the analysis of the problem, collection of inputs, using the programming constructs within languages, devising or using established procedures and algorithms, providing data for output devices and solutions to the problem as applicable. As problems become larger and more complex, features such as subprograms, modules, formal documentation, and new paradigms such as object-oriented programming are encountered. Large programs involving thousands of line of code and more require formal software methodologies. The task of developing large software systems presents a significant intellectual challenge. Producing software with an acceptably high reliability within a predictable schedule and budget has historically been difficult; the academic and professional discipline of software engineering concentrates specifically on this challenge. Errors in computer programs are called "bugs". They may be benign and not affect the usefulness of the program, or have only subtle effects. However, in some cases they may cause the program or the entire system to "hang", becoming unresponsive to input such as mouse clicks or keystrokes, to completely fail, or to crash. Otherwise benign bugs may sometimes be harnessed for malicious intent by an unscrupulous user writing an exploit, code designed to take advantage of a bug and disrupt a computer's proper execution. Bugs are usually not the fault of the computer. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design.[l] Admiral Grace Hopper, an American computer scientist and developer of the first compiler, is credited for having first used the term "bugs" in computing after a dead moth was found shorting a relay in the Harvard Mark II computer in September 1947. Networking and the Internet Computers have been used to coordinate information between multiple physical locations since the 1950s. The U.S. military's SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems such as Sabre. In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. The effort was funded by ARPA (now DARPA), and the computer network that resulted was called the ARPANET. Logic gates are a common abstraction which can apply to most of the above digital or analog paradigms. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a minimum capability (being Turing-complete) is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, any type of computer (netbook, supercomputer, cellular automaton, etc.) is able to perform the same computational tasks, given enough time and storage capacity. In the 20th century, artificial intelligence systems were predominantly symbolic: they executed code that was explicitly programmed by software developers. Machine learning models, however, have a set parameters that are adjusted throughout training, so that the model learns to accomplish a task based on the provided data. The efficiency of machine learning (and in particular of neural networks) has rapidly improved with progress in hardware for parallel computing, mainly graphics processing units (GPUs). Some large language models are able to control computers or robots. AI progress may lead to the creation of artificial general intelligence (AGI), a type of AI that could accomplish virtually any intellectual task at least as well as humans. Professions and organizations As the use of computers has spread throughout society, there are an increasing number of careers involving computers. The need for computers to work well together and to be able to exchange information has spawned the need for many standards organizations, clubs and societies of both a formal and informal nature. See also Notes References Sources External links
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[SOURCE: https://en.wikipedia.org/wiki/PlayStation_(console)#CITEREFMcDonnell1995] \| [TOKENS: 10728]
Contents PlayStation (console) The PlayStation[a] (codenamed PSX, abbreviated as PS, and retroactively PS1 or PS one) is a home video game console developed and marketed by Sony Computer Entertainment. It was released in Japan on 3 December 1994, followed by North America on 9 September 1995, Europe on 29 September 1995, and other regions following thereafter. As a fifth-generation console, the PlayStation primarily competed with the Nintendo 64 and the Sega Saturn. Sony began developing the PlayStation after a failed venture with Nintendo to create a CD-ROM peripheral for the Super Nintendo Entertainment System in the early 1990s. The console was primarily designed by Ken Kutaragi and Sony Computer Entertainment in Japan, while additional development was outsourced in the United Kingdom. An emphasis on 3D polygon graphics was placed at the forefront of the console's design. PlayStation game production was designed to be streamlined and inclusive, enticing the support of many third party developers. The console proved popular for its extensive game library, popular franchises, low retail price, and aggressive youth marketing which advertised it as the preferable console for adolescents and adults. Critically acclaimed games that defined the console include Gran Turismo, Crash Bandicoot, Spyro the Dragon, Tomb Raider, Resident Evil, Metal Gear Solid, Tekken 3, and Final Fantasy VII. Sony ceased production of the PlayStation on 23 March 2006—over eleven years after it had been released, and in the same year the PlayStation 3 debuted. More than 4,000 PlayStation games were released, with cumulative sales of 962 million units. The PlayStation signaled Sony's rise to power in the video game industry. It received acclaim and sold strongly; in less than a decade, it became the first computer entertainment platform to ship over 100 million units. Its use of compact discs heralded the game industry's transition from cartridges. The PlayStation's success led to a line of successors, beginning with the PlayStation 2 in 2000. In the same year, Sony released a smaller and cheaper model, the PS one. History The PlayStation was conceived by Ken Kutaragi, a Sony executive who managed a hardware engineering division and was later dubbed "the Father of the PlayStation". Kutaragi's interest in working with video games stemmed from seeing his daughter play games on Nintendo's Famicom. Kutaragi convinced Nintendo to use his SPC-700 sound processor in the Super Nintendo Entertainment System (SNES) through a demonstration of the processor's capabilities. His willingness to work with Nintendo was derived from both his admiration of the Famicom and conviction in video game consoles becoming the main home-use entertainment systems. Although Kutaragi was nearly fired because he worked with Nintendo without Sony's knowledge, president Norio Ohga recognised the potential in Kutaragi's chip and decided to keep him as a protégé. The inception of the PlayStation dates back to a 1988 joint venture between Nintendo and Sony. Nintendo had produced floppy disk technology to complement cartridges in the form of the Family Computer Disk System, and wanted to continue this complementary storage strategy for the SNES. Since Sony was already contracted to produce the SPC-700 sound processor for the SNES, Nintendo contracted Sony to develop a CD-ROM add-on, tentatively titled the "Play Station" or "SNES-CD". The PlayStation name had already been trademarked by Yamaha, but Nobuyuki Idei liked it so much that he agreed to acquire it for an undisclosed sum rather than search for an alternative. Sony was keen to obtain a foothold in the rapidly expanding video game market. Having been the primary manufacturer of the MSX home computer format, Sony had wanted to use their experience in consumer electronics to produce their own video game hardware. Although the initial agreement between Nintendo and Sony was about producing a CD-ROM drive add-on, Sony had also planned to develop a SNES-compatible Sony-branded console. This iteration was intended to be more of a home entertainment system, playing both SNES cartridges and a new CD format named the "Super Disc", which Sony would design. Under the agreement, Sony would retain sole international rights to every Super Disc game, giving them a large degree of control despite Nintendo's leading position in the video game market. Furthermore, Sony would also be the sole benefactor of licensing related to music and film software that it had been aggressively pursuing as a secondary application. The Play Station was to be announced at the 1991 Consumer Electronics Show (CES) in Las Vegas. However, Nintendo president Hiroshi Yamauchi was wary of Sony's increasing leverage at this point and deemed the original 1988 contract unacceptable upon realising it essentially handed Sony control over all games written on the SNES CD-ROM format. Although Nintendo was dominant in the video game market, Sony possessed a superior research and development department. Wanting to protect Nintendo's existing licensing structure, Yamauchi cancelled all plans for the joint Nintendo–Sony SNES CD attachment without telling Sony. He sent Nintendo of America president Minoru Arakawa (his son-in-law) and chairman Howard Lincoln to Amsterdam to form a more favourable contract with Dutch conglomerate Philips, Sony's rival. This contract would give Nintendo total control over their licences on all Philips-produced machines. Kutaragi and Nobuyuki Idei, Sony's director of public relations at the time, learned of Nintendo's actions two days before the CES was due to begin. Kutaragi telephoned numerous contacts, including Philips, to no avail. On the first day of the CES, Sony announced their partnership with Nintendo and their new console, the Play Station. At 9 am on the next day, in what has been called "the greatest ever betrayal" in the industry, Howard Lincoln stepped onto the stage and revealed that Nintendo was now allied with Philips and would abandon their work with Sony. Incensed by Nintendo's renouncement, Ohga and Kutaragi decided that Sony would develop their own console. Nintendo's contract-breaking was met with consternation in the Japanese business community, as they had broken an "unwritten law" of native companies not turning against each other in favour of foreign ones. Sony's American branch considered allying with Sega to produce a CD-ROM-based machine called the Sega Multimedia Entertainment System, but the Sega board of directors in Tokyo vetoed the idea when Sega of America CEO Tom Kalinske presented them the proposal. Kalinske recalled them saying: "That's a stupid idea, Sony doesn't know how to make hardware. They don't know how to make software either. Why would we want to do this?" Sony halted their research, but decided to develop what it had developed with Nintendo and Sega into a console based on the SNES. Despite the tumultuous events at the 1991 CES, negotiations between Nintendo and Sony were still ongoing. A deal was proposed: the Play Station would still have a port for SNES games, on the condition that it would still use Kutaragi's audio chip and that Nintendo would own the rights and receive the bulk of the profits. Roughly two hundred prototype machines were created, and some software entered development. Many within Sony were still opposed to their involvement in the video game industry, with some resenting Kutaragi for jeopardising the company. Kutaragi remained adamant that Sony not retreat from the growing industry and that a deal with Nintendo would never work. Knowing that they had to take decisive action, Sony severed all ties with Nintendo on 4 May 1992. To determine the fate of the PlayStation project, Ohga chaired a meeting in June 1992, consisting of Kutaragi and several senior Sony board members. Kutaragi unveiled a proprietary CD-ROM-based system he had been secretly working on which played games with immersive 3D graphics. Kutaragi was confident that his LSI chip could accommodate one million logic gates, which exceeded the capabilities of Sony's semiconductor division at the time. Despite gaining Ohga's enthusiasm, there remained opposition from a majority present at the meeting. Older Sony executives also opposed it, who saw Nintendo and Sega as "toy" manufacturers. The opposers felt the game industry was too culturally offbeat and asserted that Sony should remain a central player in the audiovisual industry, where companies were familiar with one another and could conduct "civili[s]ed" business negotiations. After Kutaragi reminded him of the humiliation he suffered from Nintendo, Ohga retained the project and became one of Kutaragi's most staunch supporters. Ohga shifted Kutaragi and nine of his team from Sony's main headquarters to Sony Music Entertainment Japan (SMEJ), a subsidiary of the main Sony group, so as to retain the project and maintain relationships with Philips for the MMCD development project. The involvement of SMEJ proved crucial to the PlayStation's early development as the process of manufacturing games on CD-ROM format was similar to that used for audio CDs, with which Sony's music division had considerable experience. While at SMEJ, Kutaragi worked with Epic/Sony Records founder Shigeo Maruyama and Akira Sato; both later became vice-presidents of the division that ran the PlayStation business. Sony Computer Entertainment (SCE) was jointly established by Sony and SMEJ to handle the company's ventures into the video game industry. On 27 October 1993, Sony publicly announced that it was entering the game console market with the PlayStation. According to Maruyama, there was uncertainty over whether the console should primarily focus on 2D, sprite-based graphics or 3D polygon graphics. After Sony witnessed the success of Sega's Virtua Fighter (1993) in Japanese arcades, the direction of the PlayStation became "instantly clear" and 3D polygon graphics became the console's primary focus. SCE president Teruhisa Tokunaka expressed gratitude for Sega's timely release of Virtua Fighter as it proved "just at the right time" that making games with 3D imagery was possible. Maruyama claimed that Sony further wanted to emphasise the new console's ability to utilise redbook audio from the CD-ROM format in its games alongside high quality visuals and gameplay. Wishing to distance the project from the failed enterprise with Nintendo, Sony initially branded the PlayStation the "PlayStation X" (PSX). Sony formed their European division and North American division, known as Sony Computer Entertainment Europe (SCEE) and Sony Computer Entertainment America (SCEA), in January and May 1995. The divisions planned to market the new console under the alternative branding "PSX" following the negative feedback regarding "PlayStation" in focus group studies. Early advertising prior to the console's launch in North America referenced PSX, but the term was scrapped before launch. The console was not marketed with Sony's name in contrast to Nintendo's consoles. According to Phil Harrison, much of Sony's upper management feared that the Sony brand would be tarnished if associated with the console, which they considered a "toy". Since Sony had no experience in game development, it had to rely on the support of third-party game developers. This was in contrast to Sega and Nintendo, which had versatile and well-equipped in-house software divisions for their arcade games and could easily port successful games to their home consoles. Recent consoles like the Atari Jaguar and 3DO suffered low sales due to a lack of developer support, prompting Sony to redouble their efforts in gaining the endorsement of arcade-savvy developers. A team from Epic Sony visited more than a hundred companies throughout Japan in May 1993 in hopes of attracting game creators with the PlayStation's technological appeal. Sony found that many disliked Nintendo's practices, such as favouring their own games over others. Through a series of negotiations, Sony acquired initial support from Namco, Konami, and Williams Entertainment, as well as 250 other development teams in Japan alone. Namco in particular was interested in developing for PlayStation since Namco rivalled Sega in the arcade market. Attaining these companies secured influential games such as Ridge Racer (1993) and Mortal Kombat 3 (1995), Ridge Racer being one of the most popular arcade games at the time, and it was already confirmed behind closed doors that it would be the PlayStation's first game by December 1993, despite Namco being a longstanding Nintendo developer. Namco's research managing director Shegeichi Nakamura met with Kutaragi in 1993 to discuss the preliminary PlayStation specifications, with Namco subsequently basing the Namco System 11 arcade board on PlayStation hardware and developing Tekken to compete with Virtua Fighter. The System 11 launched in arcades several months before the PlayStation's release, with the arcade release of Tekken in September 1994. Despite securing the support of various Japanese studios, Sony had no developers of their own by the time the PlayStation was in development. This changed in 1993 when Sony acquired the Liverpudlian company Psygnosis (later renamed SCE Liverpool) for US$48 million, securing their first in-house development team. The acquisition meant that Sony could have more launch games ready for the PlayStation's release in Europe and North America. Ian Hetherington, Psygnosis' co-founder, was disappointed after receiving early builds of the PlayStation and recalled that the console "was not fit for purpose" until his team got involved with it. Hetherington frequently clashed with Sony executives over broader ideas; at one point it was suggested that a television with a built-in PlayStation be produced. In the months leading up to the PlayStation's launch, Psygnosis had around 500 full-time staff working on games and assisting with software development. The purchase of Psygnosis marked another turning point for the PlayStation as it played a vital role in creating the console's development kits. While Sony had provided MIPS R4000-based Sony NEWS workstations for PlayStation development, Psygnosis employees disliked the thought of developing on these expensive workstations and asked Bristol-based SN Systems to create an alternative PC-based development system. Andy Beveridge and Martin Day, owners of SN Systems, had previously supplied development hardware for other consoles such as the Mega Drive, Atari ST, and the SNES. When Psygnosis arranged an audience for SN Systems with Sony's Japanese executives at the January 1994 CES in Las Vegas, Beveridge and Day presented their prototype of the condensed development kit, which could run on an ordinary personal computer with two extension boards. Impressed, Sony decided to abandon their plans for a workstation-based development system in favour of SN Systems's, thus securing a cheaper and more efficient method for designing software. An order of over 600 systems followed, and SN Systems supplied Sony with additional software such as an assembler, linker, and a debugger. SN Systems produced development kits for future PlayStation systems, including the PlayStation 2 and was bought out by Sony in 2005. Sony strived to make game production as streamlined and inclusive as possible, in contrast to the relatively isolated approach of Sega and Nintendo. Phil Harrison, representative director of SCEE, believed that Sony's emphasis on developer assistance reduced most time-consuming aspects of development. As well as providing programming libraries, SCE headquarters in London, California, and Tokyo housed technical support teams that could work closely with third-party developers if needed. Sony did not favour their own over non-Sony products, unlike Nintendo; Peter Molyneux of Bullfrog Productions admired Sony's open-handed approach to software developers and lauded their decision to use PCs as a development platform, remarking that "[it was] like being released from jail in terms of the freedom you have". Another strategy that helped attract software developers was the PlayStation's use of the CD-ROM format instead of traditional cartridges. Nintendo cartridges were expensive to manufacture, and the company controlled all production, prioritising their own games, while inexpensive compact disc manufacturing occurred at dozens of locations around the world. The PlayStation's architecture and interconnectability with PCs was beneficial to many software developers. The use of the programming language C proved useful, as it safeguarded future compatibility of the machine should developers decide to make further hardware revisions. Despite the inherent flexibility, some developers found themselves restricted due to the console's lack of RAM. While working on beta builds of the PlayStation, Molyneux observed that its MIPS processor was not "quite as bullish" compared to that of a fast PC and said that it took his team two weeks to port their PC code to the PlayStation development kits and another fortnight to achieve a four-fold speed increase. An engineer from Ocean Software, one of Europe's largest game developers at the time, thought that allocating RAM was a challenging aspect given the 3.5 megabyte restriction. Kutaragi said that while it would have been easy to double the amount of RAM for the PlayStation, the development team refrained from doing so to keep the retail cost down. Kutaragi saw the biggest challenge in developing the system to be balancing the conflicting goals of high performance, low cost, and being easy to program for, and felt he and his team were successful in this regard. Its technical specifications were finalised in 1993 and its design during 1994. The PlayStation name and its final design were confirmed during a press conference on May 10, 1994, although the price and release dates had not been disclosed yet. Sony released the PlayStation in Japan on 3 December 1994, a week after the release of the Sega Saturn, at a price of ¥39,800. Sales in Japan began with a "stunning" success with long queues in shops. Ohga later recalled that he realised how important PlayStation had become for Sony when friends and relatives begged for consoles for their children. PlayStation sold 100,000 units on the first day and two million units within six months, although the Saturn outsold the PlayStation in the first few weeks due to the success of Virtua Fighter. By the end of 1994, 300,000 PlayStation units were sold in Japan compared to 500,000 Saturn units. A grey market emerged for PlayStations shipped from Japan to North America and Europe, with buyers of such consoles paying up to £700. "When September 1995 arrived and Sony's Playstation roared out of the gate, things immediately felt different than [sic] they did with the Saturn launch earlier that year. Sega dropped the Saturn $100 to match the Playstation's $299 debut price, but sales weren't even close—Playstations flew out the door as fast as we could get them in stock. Before the release in North America, Sega and Sony presented their consoles at the first Electronic Entertainment Expo (E3) in Los Angeles on 11 May 1995. At their keynote presentation, Sega of America CEO Tom Kalinske revealed that their Saturn console would be released immediately to select retailers at a price of $399. Next came Sony's turn: Olaf Olafsson, the head of SCEA, summoned Steve Race, the head of development, to the conference stage, who said "$299" and left the audience with a round of applause. The attention to the Sony conference was further bolstered by the surprise appearance of Michael Jackson and the showcase of highly anticipated games, including Wipeout (1995), Ridge Racer and Tekken (1994). In addition, Sony announced that no games would be bundled with the console. Although the Saturn had released early in the United States to gain an advantage over the PlayStation, the surprise launch upset many retailers who were not informed in time, harming sales. Some retailers such as KB Toys responded by dropping the Saturn entirely. The PlayStation went on sale in North America on 9 September 1995. It sold more units within two days than the Saturn had in five months, with almost all of the initial shipment of 100,000 units sold in advance and shops across the country running out of consoles and accessories. The well-received Ridge Racer contributed to the PlayStation's early success, — with some critics considering it superior to Sega's arcade counterpart Daytona USA (1994) — as did Battle Arena Toshinden (1995). There were over 100,000 pre-orders placed and 17 games available on the market by the time of the PlayStation's American launch, in comparison to the Saturn's six launch games. The PlayStation released in Europe on 29 September 1995 and in Australia on 15 November 1995. By November it had already outsold the Saturn by three to one in the United Kingdom, where Sony had allocated a £20 million marketing budget during the Christmas season compared to Sega's £4 million. Sony found early success in the United Kingdom by securing listings with independent shop owners as well as prominent High Street chains such as Comet and Argos. Within its first year, the PlayStation secured over 20% of the entire American video game market. From September to the end of 1995, sales in the United States amounted to 800,000 units, giving the PlayStation a commanding lead over the other fifth-generation consoles,[b] though the SNES and Mega Drive from the fourth generation still outsold it. Sony reported that the attach rate of sold games and consoles was four to one. To meet increasing demand, Sony chartered jumbo jets and ramped up production in Europe and North America. By early 1996, the PlayStation had grossed $2 billion (equivalent to $4.106 billion 2025) from worldwide hardware and software sales. By late 1996, sales in Europe totalled 2.2 million units, including 700,000 in the UK. Approximately 400 PlayStation games were in development, compared to around 200 games being developed for the Saturn and 60 for the Nintendo 64. In India, the PlayStation was launched in test market during 1999–2000 across Sony showrooms, selling 100 units. Sony finally launched the console (PS One model) countrywide on 24 January 2002 with the price of Rs 7,990 and 26 games available from start. PlayStation was also doing well in markets where it was never officially released. For example, in Brazil, due to the registration of the trademark by a third company, the console could not be released, which was why the market was taken over by the officially distributed Sega Saturn during the first period, but as the Sega console withdraws, PlayStation imports and large piracy increased. In another market, China, the most popular 32-bit console was Sega Saturn, but after leaving the market, PlayStation grown with a base of 300,000 users until January 2000, although Sony China did not have plans to release it. The PlayStation was backed by a successful marketing campaign, allowing Sony to gain an early foothold in Europe and North America. Initially, PlayStation demographics were skewed towards adults, but the audience broadened after the first price drop. While the Saturn was positioned towards 18- to 34-year-olds, the PlayStation was initially marketed exclusively towards teenagers. Executives from both Sony and Sega reasoned that because younger players typically looked up to older, more experienced players, advertising targeted at teens and adults would draw them in too. Additionally, Sony found that adults reacted best to advertising aimed at teenagers; Lee Clow surmised that people who started to grow into adulthood regressed and became "17 again" when they played video games. The console was marketed with advertising slogans stylised as "LIVE IN YUR WRLD. PLY IN URS" (Live in Your World. Play in Ours.) and "U R NOT E" (red E). The four geometric shapes were derived from the symbols for the four buttons on the controller. Clow thought that by invoking such provocative statements, gamers would respond to the contrary and say "'Bullshit. Let me show you how ready I am.'" As the console's appeal enlarged, Sony's marketing efforts broadened from their earlier focus on mature players to specifically target younger children as well. Shortly after the PlayStation's release in Europe, Sony tasked marketing manager Geoff Glendenning with assessing the desires of a new target audience. Sceptical over Nintendo and Sega's reliance on television campaigns, Glendenning theorised that young adults transitioning from fourth-generation consoles would feel neglected by marketing directed at children and teenagers. Recognising the influence early 1990s underground clubbing and rave culture had on young people, especially in the United Kingdom, Glendenning felt that the culture had become mainstream enough to help cultivate PlayStation's emerging identity. Sony partnered with prominent nightclub owners such as Ministry of Sound and festival promoters to organise dedicated PlayStation areas where demonstrations of select games could be tested. Sheffield-based graphic design studio The Designers Republic was contracted by Sony to produce promotional materials aimed at a fashionable, club-going audience. Psygnosis' Wipeout in particular became associated with nightclub culture as it was widely featured in venues. By 1997, there were 52 nightclubs in the United Kingdom with dedicated PlayStation rooms. Glendenning recalled that he had discreetly used at least £100,000 a year in slush fund money to invest in impromptu marketing. In 1996, Sony expanded their CD production facilities in the United States due to the high demand for PlayStation games, increasing their monthly output from 4 million discs to 6.5 million discs. This was necessary because PlayStation sales were running at twice the rate of Saturn sales, and its lead dramatically increased when both consoles dropped in price to $199 that year. The PlayStation also outsold the Saturn at a similar ratio in Europe during 1996, with 2.2 million consoles sold in the region by the end of the year. Sales figures for PlayStation hardware and software only increased following the launch of the Nintendo 64. Tokunaka speculated that the Nintendo 64 launch had actually helped PlayStation sales by raising public awareness of the gaming market through Nintendo's added marketing efforts. Despite this, the PlayStation took longer to achieve dominance in Japan. Tokunaka said that, even after the PlayStation and Saturn had been on the market for nearly two years, the competition between them was still "very close", and neither console had led in sales for any meaningful length of time. By 1998, Sega, encouraged by their declining market share and significant financial losses, launched the Dreamcast as a last-ditch attempt to stay in the industry. Although its launch was successful, the technically superior 128-bit console was unable to subdue Sony's dominance in the industry. Sony still held 60% of the overall video game market share in North America at the end of 1999. Sega's initial confidence in their new console was undermined when Japanese sales were lower than expected, with disgruntled Japanese consumers reportedly returning their Dreamcasts in exchange for PlayStation software. On 2 March 1999, Sony officially revealed details of the PlayStation 2, which Kutaragi announced would feature a graphics processor designed to push more raw polygons than any console in history, effectively rivalling most supercomputers. The PlayStation continued to sell strongly at the turn of the new millennium: in June 2000, Sony released the PSOne, a smaller, redesigned variant which went on to outsell all other consoles in that year, including the PlayStation 2. In 2005, PlayStation became the first console to ship 100 million units with the PlayStation 2 later achieving this faster than its predecessor. The combined successes of both PlayStation consoles led to Sega retiring the Dreamcast in 2001, and abandoning the console business entirely. The PlayStation was eventually discontinued on 23 March 2006—over eleven years after its release, and less than a year before the debut of the PlayStation 3. Hardware The main microprocessor is a R3000 CPU made by LSI Logic operating at a clock rate of 33.8688 MHz and 30 MIPS. This 32-bit CPU relies heavily on the "cop2" 3D and matrix math coprocessor on the same die to provide the necessary speed to render complex 3D graphics. The role of the separate GPU chip is to draw 2D polygons and apply shading and textures to them: the rasterisation stage of the graphics pipeline. Sony's custom 16-bit sound chip supports ADPCM sources with up to 24 sound channels and offers a sampling rate of up to 44.1 kHz and music sequencing. It features 2 MB of main RAM, with an additional 1 MB of video RAM. The PlayStation has a maximum colour depth of 16.7 million true colours with 32 levels of transparency and unlimited colour look-up tables. The PlayStation can output composite, S-Video or RGB video signals through its AV Multi connector (with older models also having RCA connectors for composite), displaying resolutions from 256×224 to 640×480 pixels. Different games can use different resolutions. Earlier models also had proprietary parallel and serial ports that could be used to connect accessories or multiple consoles together; these were later removed due to a lack of usage. The PlayStation uses a proprietary video compression unit, MDEC, which is integrated into the CPU and allows for the presentation of full motion video at a higher quality than other consoles of its generation. Unusual for the time, the PlayStation lacks a dedicated 2D graphics processor; 2D elements are instead calculated as polygons by the Geometry Transfer Engine (GTE) so that they can be processed and displayed on screen by the GPU. While running, the GPU can also generate a total of 4,000 sprites and 180,000 polygons per second, in addition to 360,000 per second flat-shaded. The PlayStation went through a number of variants during its production run. Externally, the most notable change was the gradual reduction in the number of external connectors from the rear of the unit. This started with the original Japanese launch units; the SCPH-1000, released on 3 December 1994, was the only model that had an S-Video port, as it was removed from the next model. Subsequent models saw a reduction in number of parallel ports, with the final version only retaining one serial port. Sony marketed a development kit for amateur developers known as the Net Yaroze (meaning "Let's do it together" in Japanese). It was launched in June 1996 in Japan, and following public interest, was released the next year in other countries. The Net Yaroze allowed hobbyists to create their own games and upload them via an online forum run by Sony. The console was only available to buy through an ordering service and with the necessary documentation and software to program PlayStation games and applications through C programming compilers. On 7 July 2000, Sony released the PS One (stylised as "PS one" or "PSone"), a smaller, redesigned version of the original PlayStation. It was the highest-selling console through the end of the year, outselling all other consoles—including the PlayStation 2. In 2002, Sony released a 5-inch (130 mm) LCD screen add-on for the PS One, referred to as the "Combo pack". It also included a car cigarette lighter adaptor adding an extra layer of portability. Production of the LCD "Combo Pack" ceased in 2004, when the popularity of the PlayStation began to wane in markets outside Japan. A total of 28.15 million PS One units had been sold by the time it was discontinued in March 2006. Three iterations of the PlayStation's controller were released over the console's lifespan. The first controller, the PlayStation controller, was released alongside the PlayStation in December 1994. It features four individual directional buttons (as opposed to a conventional D-pad), a pair of shoulder buttons on both sides, Start and Select buttons in the centre, and four face buttons consisting of simple geometric shapes: a green triangle, red circle, blue cross, and a pink square (, , , ). Rather than depicting traditionally used letters or numbers onto its buttons, the PlayStation controller established a trademark which would be incorporated heavily into the PlayStation brand. Teiyu Goto, the designer of the original PlayStation controller, said that the circle and cross represent "yes" and "no", respectively (though this layout is reversed in Western versions); the triangle symbolises a point of view and the square is equated to a sheet of paper to be used to access menus. The European and North American models of the original PlayStation controllers are roughly 10% larger than its Japanese variant, to account for the fact the average person in those regions has larger hands than the average Japanese person. Sony's first analogue gamepad, the PlayStation Analog Joystick (often erroneously referred to as the "Sony Flightstick"), was first released in Japan in April 1996. Featuring two parallel joysticks, it uses potentiometer technology previously used on consoles such as the Vectrex; instead of relying on binary eight-way switches, the controller detects minute angular changes through the entire range of motion. The stick also features a thumb-operated digital hat switch on the right joystick, corresponding to the traditional D-pad, and used for instances when simple digital movements were necessary. The Analog Joystick sold poorly in Japan due to its high cost and cumbersome size. The increasing popularity of 3D games prompted Sony to add analogue sticks to its controller design to give users more freedom over their movements in virtual 3D environments. The first official analogue controller, the Dual Analog Controller, was revealed to the public in a small glass booth at the 1996 PlayStation Expo in Japan, and released in April 1997 to coincide with the Japanese releases of analogue-capable games Tobal 2 and Bushido Blade. In addition to the two analogue sticks (which also introduced two new buttons mapped to clicking in the analogue sticks), the Dual Analog controller features an "Analog" button and LED beneath the "Start" and "Select" buttons which toggles analogue functionality on or off. The controller also features rumble support, though Sony decided that haptic feedback would be removed from all overseas iterations before the United States release. A Sony spokesman stated that the feature was removed for "manufacturing reasons", although rumours circulated that Nintendo had attempted to legally block the release of the controller outside Japan due to similarities with the Nintendo 64 controller's Rumble Pak. However, a Nintendo spokesman denied that Nintendo took legal action. Next Generation's Chris Charla theorised that Sony dropped vibration feedback to keep the price of the controller down. In November 1997, Sony introduced the DualShock controller. Its name derives from its use of two (dual) vibration motors (shock). Unlike its predecessor, its analogue sticks feature textured rubber grips, longer handles, slightly different shoulder buttons and has rumble feedback included as standard on all versions. The DualShock later replaced its predecessors as the default controller. Sony released a series of peripherals to add extra layers of functionality to the PlayStation. Such peripherals include memory cards, the PlayStation Mouse, the PlayStation Link Cable, the Multiplayer Adapter (a four-player multitap), the Memory Drive (a disk drive for 3.5-inch floppy disks), the GunCon (a light gun), and the Glasstron (a monoscopic head-mounted display). Released exclusively in Japan, the PocketStation is a memory card peripheral which acts as a miniature personal digital assistant. The device features a monochrome liquid crystal display (LCD), infrared communication capability, a real-time clock, built-in flash memory, and sound capability. Sharing similarities with the Dreamcast's VMU peripheral, the PocketStation was typically distributed with certain PlayStation games, enhancing them with added features. The PocketStation proved popular in Japan, selling over five million units. Sony planned to release the peripheral outside Japan but the release was cancelled, despite receiving promotion in Europe and North America. In addition to playing games, most PlayStation models are equipped to play CD-Audio. The Asian model SCPH-5903 can also play Video CDs. Like most CD players, the PlayStation can play songs in a programmed order, shuffle the playback order of the disc and repeat one song or the entire disc. Later PlayStation models use a music visualisation function called SoundScope. This function, as well as a memory card manager, is accessed by starting the console without either inserting a game or closing the CD tray, thereby accessing a graphical user interface (GUI) for the PlayStation BIOS. The GUI for the PS One and PlayStation differ depending on the firmware version: the original PlayStation GUI had a dark blue background with rainbow graffiti used as buttons, while the early PAL PlayStation and PS One GUI had a grey blocked background with two icons in the middle. PlayStation emulation is versatile and can be run on numerous modern devices. Bleem! was a commercial emulator which was released for IBM-compatible PCs and the Dreamcast in 1999. It was notable for being aggressively marketed during the PlayStation's lifetime, and was the centre of multiple controversial lawsuits filed by Sony. Bleem! was programmed in assembly language, which allowed it to emulate PlayStation games with improved visual fidelity, enhanced resolutions, and filtered textures that was not possible on original hardware. Sony sued Bleem! two days after its release, citing copyright infringement and accusing the company of engaging in unfair competition and patent infringement by allowing use of PlayStation BIOSs on a Sega console. Bleem! were subsequently forced to shut down in November 2001. Sony was aware that using CDs for game distribution could have left games vulnerable to piracy, due to the growing popularity of CD-R and optical disc drives with burning capability. To preclude illegal copying, a proprietary process for PlayStation disc manufacturing was developed that, in conjunction with an augmented optical drive in Tiger H/E assembly, prevented burned copies of games from booting on an unmodified console. Specifically, all genuine PlayStation discs were printed with a small section of deliberate irregular data, which the PlayStation's optical pick-up was capable of detecting and decoding. Consoles would not boot game discs without a specific wobble frequency contained in the data of the disc pregap sector (the same system was also used to encode discs' regional lockouts). This signal was within Red Book CD tolerances, so PlayStation discs' actual content could still be read by a conventional disc drive; however, the disc drive could not detect the wobble frequency (therefore duplicating the discs omitting it), since the laser pick-up system of any optical disc drive would interpret this wobble as an oscillation of the disc surface and compensate for it in the reading process. Early PlayStations, particularly early 1000 models, experience skipping full-motion video or physical "ticking" noises from the unit. The problems stem from poorly placed vents leading to overheating in some environments, causing the plastic mouldings inside the console to warp slightly and create knock-on effects with the laser assembly. The solution is to sit the console on a surface which dissipates heat efficiently in a well vented area or raise the unit up slightly from its resting surface. Sony representatives also recommended unplugging the PlayStation when it is not in use, as the system draws in a small amount of power (and therefore heat) even when turned off. The first batch of PlayStations use a KSM-440AAM laser unit, whose case and movable parts are all built out of plastic. Over time, the plastic lens sled rail wears out—usually unevenly—due to friction. The placement of the laser unit close to the power supply accelerates wear, due to the additional heat, which makes the plastic more vulnerable to friction. Eventually, one side of the lens sled will become so worn that the laser can tilt, no longer pointing directly at the CD; after this, games will no longer load due to data read errors. Sony fixed the problem by making the sled out of die-cast metal and placing the laser unit further away from the power supply on later PlayStation models. Due to an engineering oversight, the PlayStation does not produce a proper signal on several older models of televisions, causing the display to flicker or bounce around the screen. Sony decided not to change the console design, since only a small percentage of PlayStation owners used such televisions, and instead gave consumers the option of sending their PlayStation unit to a Sony service centre to have an official modchip installed, allowing play on older televisions. Game library The PlayStation featured a diverse game library which grew to appeal to all types of players. Critically acclaimed PlayStation games included Final Fantasy VII (1997), Crash Bandicoot (1996), Spyro the Dragon (1998), Metal Gear Solid (1998), all of which became established franchises. Final Fantasy VII is credited with allowing role-playing games to gain mass-market appeal outside Japan, and is considered one of the most influential and greatest video games ever made. The PlayStation's bestselling game is Gran Turismo (1997), which sold 10.85 million units. After the PlayStation's discontinuation in 2006, the cumulative software shipment was 962 million units. Following its 1994 launch in Japan, early games included Ridge Racer, Crime Crackers, King's Field, Motor Toon Grand Prix, Toh Shin Den (i.e. Battle Arena Toshinden), and Kileak: The Blood. The first two games available at its later North American launch were Jumping Flash! (1995) and Ridge Racer, with Jumping Flash! heralded as an ancestor for 3D graphics in console gaming. Wipeout, Air Combat, Twisted Metal, Warhawk and Destruction Derby were among the popular first-year games, and the first to be reissued as part of Sony's Greatest Hits or Platinum range. At the time of the PlayStation's first Christmas season, Psygnosis had produced around 70% of its launch catalogue; their breakthrough racing game Wipeout was acclaimed for its techno soundtrack and helped raise awareness of Britain's underground music community. Eidos Interactive's action-adventure game Tomb Raider contributed substantially to the success of the console in 1996, with its main protagonist Lara Croft becoming an early gaming icon and garnering unprecedented media promotion. Licensed tie-in video games of popular films were also prevalent; Argonaut Games' 2001 adaptation of Harry Potter and the Philosopher's Stone went on to sell over eight million copies late in the console's lifespan. Third-party developers committed largely to the console's wide-ranging game catalogue even after the launch of the PlayStation 2; some of the notable exclusives in this era include Harry Potter and the Philosopher's Stone, Fear Effect 2: Retro Helix, Syphon Filter 3, C-12: Final Resistance, Dance Dance Revolution Konamix and Digimon World 3.[c] Sony assisted with game reprints as late as 2008 with Metal Gear Solid: The Essential Collection, this being the last PlayStation game officially released and licensed by Sony. Initially, in the United States, PlayStation games were packaged in long cardboard boxes, similar to non-Japanese 3DO and Saturn games. Sony later switched to the jewel case format typically used for audio CDs and Japanese video games, as this format took up less retailer shelf space (which was at a premium due to the large number of PlayStation games being released), and focus testing showed that most consumers preferred this format. Reception The PlayStation was mostly well received upon release. Critics in the west generally welcomed the new console; the staff of Next Generation reviewed the PlayStation a few weeks after its North American launch, where they commented that, while the CPU is "fairly average", the supplementary custom hardware, such as the GPU and sound processor, is stunningly powerful. They praised the PlayStation's focus on 3D, and complemented the comfort of its controller and the convenience of its memory cards. Giving the system 41⁄2 out of 5 stars, they concluded, "To succeed in this extremely cut-throat market, you need a combination of great hardware, great games, and great marketing. Whether by skill, luck, or just deep pockets, Sony has scored three out of three in the first salvo of this war." Albert Kim from Entertainment Weekly praised the PlayStation as a technological marvel, rivalling that of Sega and Nintendo. Famicom Tsūshin scored the console a 19 out of 40, lower than the Saturn's 24 out of 40, in May 1995. In a 1997 year-end review, a team of five Electronic Gaming Monthly editors gave the PlayStation scores of 9.5, 8.5, 9.0, 9.0, and 9.5—for all five editors, the highest score they gave to any of the five consoles reviewed in the issue. They lauded the breadth and quality of the games library, saying it had vastly improved over previous years due to developers mastering the system's capabilities in addition to Sony revising their stance on 2D and role playing games. They also complimented the low price point of the games compared to the Nintendo 64's, and noted that it was the only console on the market that could be relied upon to deliver a solid stream of games for the coming year, primarily due to third party developers almost unanimously favouring it over its competitors. Legacy SCE was an upstart in the video game industry in late 1994, as the video game market in the early 1990s was dominated by Nintendo and Sega. Nintendo had been the clear leader in the industry since the introduction of the Nintendo Entertainment System in 1985 and the Nintendo 64 was initially expected to maintain this position. The PlayStation's target audience included the generation which was the first to grow up with mainstream video games, along with 18- to 29-year-olds who were not the primary focus of Nintendo. By the late 1990s, Sony became a highly regarded console brand due to the PlayStation, with a significant lead over second-place Nintendo, while Sega was relegated to a distant third. The PlayStation became the first "computer entertainment platform" to ship over 100 million units worldwide, with many critics attributing the console's success to third-party developers. It remains the sixth best-selling console of all time as of 2025[update], with a total of 102.49 million units sold. Around 7,900 individual games were published for the console during its 11-year life span, the second-most games ever produced for a console. Its success resulted in a significant financial boon for Sony as profits from their video game division contributed to 23%. Sony's next-generation PlayStation 2, which is backward compatible with the PlayStation's DualShock controller and games, was announced in 1999 and launched in 2000. The PlayStation's lead in installed base and developer support paved the way for the success of its successor, which overcame the earlier launch of the Sega's Dreamcast and then fended off competition from Microsoft's newcomer Xbox and Nintendo's GameCube. The PlayStation 2's immense success and failure of the Dreamcast were among the main factors which led to Sega abandoning the console market. To date, five PlayStation home consoles have been released, which have continued the same numbering scheme, as well as two portable systems. The PlayStation 3 also maintained backward compatibility with original PlayStation discs. Hundreds of PlayStation games have been digitally re-released on the PlayStation Portable, PlayStation 3, PlayStation Vita, PlayStation 4, and PlayStation 5. The PlayStation has often ranked among the best video game consoles. In 2018, Retro Gamer named it the third best console, crediting its sophisticated 3D capabilities as one of its key factors in gaining mass success, and lauding it as a "game-changer in every sense possible". In 2009, IGN ranked the PlayStation the seventh best console in their list, noting its appeal towards older audiences to be a crucial factor in propelling the video game industry, as well as its assistance in transitioning game industry to use the CD-ROM format. Keith Stuart from The Guardian likewise named it as the seventh best console in 2020, declaring that its success was so profound it "ruled the 1990s". In January 2025, Lorentio Brodesco announced the nsOne project, attempting to reverse engineer PlayStation's motherboard. Brodesco stated that "detailed documentation on the original motherboard was either incomplete or entirely unavailable". The project was successfully crowdfunded via Kickstarter. In June, Brodesco manufactured the first working motherboard, promising to bring a fully rooted version with multilayer routing as well as documentation and design files in the near future. The success of the PlayStation contributed to the demise of cartridge-based home consoles. While not the first system to use an optical disc format, it was the first highly successful one, and ended up going head-to-head with the proprietary cartridge-relying Nintendo 64,[d] which the industry had expected to use CDs like PlayStation. After the demise of the Sega Saturn, Nintendo was left as Sony's main competitor in Western markets. Nintendo chose not to use CDs for the Nintendo 64; they were likely concerned with the proprietary cartridge format's ability to help enforce copy protection, given their substantial reliance on licensing and exclusive games for their revenue. Besides their larger capacity, CD-ROMs could be produced in bulk quantities at a much faster rate than ROM cartridges, a week compared to two to three months. Further, the cost of production per unit was far cheaper, allowing Sony to offer games about 40% lower cost to the user compared to ROM cartridges while still making the same amount of net revenue. In Japan, Sony published fewer copies of a wide variety of games for the PlayStation as a risk-limiting step, a model that had been used by Sony Music for CD audio discs. The production flexibility of CD-ROMs meant that Sony could produce larger volumes of popular games to get onto the market quickly, something that could not be done with cartridges due to their manufacturing lead time. The lower production costs of CD-ROMs also allowed publishers an additional source of profit: budget-priced reissues of games which had already recouped their development costs. Tokunaka remarked in 1996: Choosing CD-ROM is one of the most important decisions that we made. As I'm sure you understand, PlayStation could just as easily have worked with masked ROM [cartridges]. The 3D engine and everything—the whole PlayStation format—is independent of the media. But for various reasons (including the economies for the consumer, the ease of the manufacturing, inventory control for the trade, and also the software publishers) we deduced that CD-ROM would be the best media for PlayStation. The increasing complexity of developing games pushed cartridges to their storage limits and gradually discouraged some third-party developers. Part of the CD format's appeal to publishers was that they could be produced at a significantly lower cost and offered more production flexibility to meet demand. As a result, some third-party developers switched to the PlayStation, including Square and Enix, whose Final Fantasy VII and Dragon Quest VII respectively had been planned for the Nintendo 64 (both companies later merged to form Square Enix). Other developers released fewer games for the Nintendo 64 (Konami, releasing only thirteen N64 games but over fifty on the PlayStation). Nintendo 64 game releases were less frequent than the PlayStation's, with many being developed by either Nintendo themselves or second-parties such as Rare. The PlayStation Classic is a dedicated video game console made by Sony Interactive Entertainment that emulates PlayStation games. It was announced in September 2018 at the Tokyo Game Show, and released on 3 December 2018, the 24th anniversary of the release of the original console. As a dedicated console, the PlayStation Classic features 20 pre-installed games; the games run off the open source emulator PCSX. The console is bundled with two replica wired PlayStation controllers (those without analogue sticks), an HDMI cable, and a USB-Type A cable. Internally, the console uses a MediaTek MT8167a Quad A35 system on a chip with four central processing cores clocked at @ 1.5 GHz and a Power VR GE8300 graphics processing unit. It includes 16 GB of eMMC flash storage and 1 Gigabyte of DDR3 SDRAM. The PlayStation Classic is 45% smaller than the original console. The PlayStation Classic received negative reviews from critics and was compared unfavorably to Nintendo's rival Nintendo Entertainment System Classic Edition and Super Nintendo Entertainment System Classic Edition. Criticism was directed at its meagre game library, user interface, emulation quality, use of PAL versions for certain games, use of the original controller, and high retail price, though the console's design received praise. The console sold poorly. See also Notes References
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[SOURCE: https://www.theverge.com/business/881967/polymarket-kalshi-journalism-sponsorship-ad] \| [TOKENS: 6163]
BusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessPolicyClosePolicyPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All PolicyReportCloseReportPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ReportProp betRegulators noticed Polymarket and Kalshi rake in cash on sports bets. So now prediction markets are cosplaying as the future of news.by Elizabeth LopattoCloseElizabeth LopattoSenior ReporterPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Elizabeth LopattoFeb 20, 2026, 4:15 PM UTCLinkShareGiftPondering my orb. \| Image: Cath Virginia / The Verge, Getty ImagesBusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessPolicyClosePolicyPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All PolicyReportCloseReportPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ReportProp betRegulators noticed Polymarket and Kalshi rake in cash on sports bets. So now prediction markets are cosplaying as the future of news.by Elizabeth LopattoCloseElizabeth LopattoSenior ReporterPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Elizabeth LopattoFeb 20, 2026, 4:15 PM UTCLinkShareGiftPart OfEverything is gambling now: the latest news on prediction markets like Polymarket and Kalshisee all updates Elizabeth LopattoCloseElizabeth LopattoPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Elizabeth Lopatto is a reporter who writes about tech, money, and human behavior. She joined The Verge in 2014 as science editor. Previously, she was a reporter at Bloomberg.Substack has updated its partnership with betting platform Polymarket, “introducing native tools that make it easier to share, discuss, and debate prediction market data directly on Substack.” Additionally, Polymarket will effectively pay “a cohort of creators,” including Matt Yglesias, to use its data though the newsletter platform’s pilot sponsorships program.This is just the latest foray of prediction markets into media. Last week, Dow Jones agreed to incorporate Polymarket’s betting data into its “content,” including The Wall Street Journal. A month before that, CNN incorporated Kalshi’s betting odds. In December, CNBC agreed to infuse its programming with Kalshi data. Noted poker player Nate Silver, once a respected stats journalist, is now an advisor for Polymarket.“If you get the news before it happens, that should be even more economically valuable.”This looks like a concerted effort to confuse people about what news is and does. Here’s Robinhood’s CEO Vlad Tenev, one of the leading profiteers from America’s financial nihilism: “I like to think about prediction markets as the next generation of the news. We know the news is economically valuable. People pay for getting the newspaper; they pay indirectly for shows like this [Squawk on the Street on CNBC] through advertising, and so if you get the news before it happens, that should be even more economically valuable.”Let’s stop for a moment and think about what news is, since the slippage in Tenev’s quote (“if you get the news before it happens”) highlights the problem with his line of thought. It kind of seems like people have recently become confused about the difference between information, journalism, and “content.” The earliest known predecessor to journalism is Rome’s Acta Diurna, which was in circulation more than two millennia ago — basically an official record of events, such as births, new laws, and financial data. (A similar publication circulated in China starting in the Tang dynasty.) In 15th-century Europe, businessmen began disseminating written accounts of important events to their contacts; this is essentially the predecessor to the modern newspaper.Do you notice anything here? That’s right: News is a record of things that have happened. Weather forecasts and horoscopes aside, newspapers do not traffic in predictions. They tell you, instead, about the very recent past — what happened yesterday. An online news site, not constrained by a printing press, can even tell you what happened 20 minutes ago. But no news organization exists to predict the future. By definition, you cannot know the news before it happens.The actual function of news, however, can sometimes be obscured by what Daniel J. Boorstin calls “pseudo-events,” which are planned events that can be repeated, such as awards shows, press conferences, political conventions, and earnings calls. Unlike true events — natural disasters, a vote at the city council meeting, an assassination — the outcome of a pseudo-event can be known in advance because it is planned. Its contents can be distributed to reporters “under embargo,” so that when the pseudo-event occurs, reporters can instantaneously run a story.The conflation of betting markets and news began with political coverageLots of publications, including this one, include coverage of pseudo-events — an Apple event is a great example — alongside the accounting of real events. In Boorstin’s The Image: A Guide to Pseudo-Events in America, he suggests that news outlets cover pseudo-events in part because there are not enough actual events to fill out the news cycle. There is also tremendous consumer demand for pseudo-events; celebrities, which are pseudo-events made flesh, are so significantly popular that an entire ecosystem of publications exists for them.Pseudo-events have overtaken actual events in Hollywood, where they have long been generated to create marketing for movies. The other place where pseudo-events dominate real events is politics. Speeches are pseudo-events, which is why journalists often receive the drafted remarks in advance; so are press conferences, social media beefs, ribbon-cuttings, and the Presidential pardoning of a turkey. I bring this up because I believe the conflation of betting markets and news began with political coverage.In 2024, no one was sure how reliable presidential polling was — since people were increasingly using mobile phones rather than landlines, and often not picking up because of a deluge of spam calls. Polls, of course, look more like pseudo-events (press releases) than actual ones (six-car pileups), and exist in part to drive conversation. They are not the same thing as news; polls are, at best, a snapshot of a specific group at a specific time asked specifically -worded questions and, at worst, political horoscopes. I’m not convinced newspapers should be in the business of reporting on polls, much less running them.Still, people — at least editors and reporters, and maybe the audience too — wanted some indication of what might happen in a presidential election. Prediction markets were so confident that Trump would beat Harris that they made traditional newspapers, which saw the race as a toss up, look like they were waffling. (And if you don’t really understand how probability works, you too probably think Polymarket was more correct than “tossup.”) So betting markets were suggested as a viable alternative to polls; the idea was that people were so confident in a specific outcome that they were willing to wager on it. And that’s how odds on Polymarket and Kalshi started to creep into stories.“These markets have changed the way people consume news.”The other argument in favor of betting markets, as made by their advocates, is that they contain insider information. This is “cool,” according to Polymarket’s CEO, Shayne Coplan. It is also illegal. That doesn’t matter much to the purveyors of gambling-addiction-as-a-service; because contracts are peer-to-peer, the house isn’t getting ripped off. It’s only the punters dumb enough to enter the bet without insider information who’ll lose their shirts.There are several examples of plausible insider trading on predictions markets: the entity who cashed out with almost half a million dollars when the US snatched Venezuela’s president, for instance — an actual event that occurred in order to create pseudo-events. (Baudrillard would be so proud!) Or the bettor who made more than $1 million by placing bets on what Google’s 2025 Year in Search rankings would be. Or the trader who made $50,000 by betting correctly on the recipient of the Nobel Peace Prize.A great deal of volume in prediction markets is sports betting, though predictions markets mechanically work slightly differently than straight sports bets. A standard sports bet has the punter taking one side and the house taking the other; in prediction markets, there are punters on both ends, and the house just takes a cut of the trade. Also, prediction markets deal in contracts, which can lead to ambiguity — such as whether Cardi B’s dance during Bad Bunny’s Super Bowl halftime show counted as a performance. It is possible for the spirit of a contract to be fulfilled (the US kidnapped the president of Venezuela) while the letter isn’t (according to Polymarket, this was not an “invasion”).It is unclear to me how helping gambling companies rip off your audience serves the public interestThis distinction, silly as it sounds, may actually matter. While some states have indicated they believe prediction markets should follow the legal framework for sports betting, the feds think those states should fuck right off. Any moves by the states to limit insider trading on betting markets will be blocked by Mike Selig, the chair of the Commodity Futures Trading Commission. “These markets have changed the way people consume news,” Selig says, accurately.Obviously, as the Year in Search and Nobel Prize bets show, it’s easier to correctly bet on a pseudo-event than an actual one. But the consequences of insider information on actual information are potentially more devastating — the leakage of state secrets, and not to protect the public. As media critic Matt Pearce points out, there’s a problem of incentives: ethical journalists cannot pay sources, but prediction markets do.Of course, for the insiders to make their money, there must be a steady supply of suckers. And there is! Only about a third of traders actually make profits, and “a large number of traders systematically lose money to a small minority of skilled participants.”So by partnering with these betting markets, news organizations — from the legacy entities like WSJ or CNN to the burgeoning new media platforms like Substack — have undercut themselves two ways: first, by commodifying information and then by effectively endorsing competitors who can pay for that information; and second, by serving as advertising for prediction markets, making their audience vulnerable to getting ripped off by insiders. It is unclear to me how helping gambling companies rip off your audience serves the public interest, which is, or at least once was, the point of newsgathering.A cynic might suggest that the move to embed betting markets in newsrooms is mere marketingAnd the public interest is why most of us got into this business in the first place. Most journalists aim to reflect reality back to readers, without any particular interest in whether that makes said reader wealthier. The Fourth Estate, as news organizations are sometimes called, is meant to wield political power by uncovering wrongdoing, embarrassing the government into action. From Enron to Theranos, multiple frauds were first uncovered not by the SEC, but by the press. Back when corruption mattered in politics, many of those scandals — from Watergate to whatever we want to call George Santos’ whole deal — were also discovered by journalists rather than the Department of Justice.This is not to say that reporters are always right, or that journalism always achieves its highest calling. I am, after all, old enough to remember the non-existent “weapons of mass destruction” that The New York Times reported on to justify the war in Iraq. But as suggested by my catty little remark about the WMDs, journalists are expected to be accountable for their mistakes. Any reputable newspaper or magazine runs a correction when even a word is off. (That NYT refuses to admit to its major errors is a longstanding area of consternation among other journalists.)Prediction markets, on the other hand, make their money through transaction fees — and thus through volume. In true nihilistic fashion, these markets care less about the outcome of a contract than an actual casino. It is possible to feel betrayed by the various failures of mainstream media, but Kalshi, Polymarket, and Robinhood are only after your money. A cynic might suggest that the move to embed betting markets in newsrooms is mere marketing: an attempt to signal that these are somehow different from, and superior to, casinos. Certainly that’s what I think.What’s less clear to me is why newsrooms are going along for the ride. (I have my suspicions about why this makes sense to Substack.) Is Dow Jones so strapped for cash that it’s stooped to this? Or is it the case that the people running CNN, CNBC, and Dow Jones truly have gotten so confused by pseudo-events that they no longer understand the difference between concocted media circuses and actual happenings in the world?I also wonder whether this push to legitimize gambling will undermine trust in people who are trained and accountable, who specialize in writing about reality. In the same way that many audiences prefer pseudo-events to events, we may discover that people prefer the “wisdom” of thousands of anons attempting to predict the future to actual reporting on the current conditions around us. Seems like that’s what Polymarket and Kalshi are betting on, anyway.Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.Elizabeth LopattoCloseElizabeth LopattoSenior ReporterPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Elizabeth LopattoAnalysisCloseAnalysisPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All AnalysisBusinessCloseBusinessPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All BusinessPolicyClosePolicyPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All PolicyPoliticsClosePoliticsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All PoliticsReportCloseReportPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ReportSocial MediaCloseSocial MediaPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All Social MediaTechCloseTechPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All TechMore in: Everything is gambling now: the latest news on prediction markets like Polymarket and KalshiSubstack isn’t just known for “platforming and monetizing Nazis” now.Richard LawlerFeb 19It’s MAGA v Broligarch in the battle over prediction marketsTina NguyenFeb 19Nevada sues to block Kalshi’s prediction betting marketEmma RothFeb 18Most PopularMost PopularXbox chief Phil Spencer is leaving MicrosoftRead Microsoft gaming CEO Asha Sharma’s first memo on the future of XboxThe RAM shortage is coming for everything you care aboutAmazon blames human employees for an AI coding agent’s mistakeWill Stancil, man of the people or just an annoying guy?The Verge DailyA free daily digest of the news that matters most.Email (required)Sign UpBy submitting your email, you agree to our Terms and Privacy Notice. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.Advertiser Content FromThis is the title for the native ad Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All Policy Posts from this topic will be added to your daily email digest and your homepage feed. See All Report Prop bet Regulators noticed Polymarket and Kalshi rake in cash on sports bets. So now prediction markets are cosplaying as the future of news. Posts from this author will be added to your daily email digest and your homepage feed. See All by Elizabeth Lopatto Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All Policy Posts from this topic will be added to your daily email digest and your homepage feed. See All Report Prop bet Regulators noticed Polymarket and Kalshi rake in cash on sports bets. So now prediction markets are cosplaying as the future of news. Posts from this author will be added to your daily email digest and your homepage feed. See All by Elizabeth Lopatto Posts from this author will be added to your daily email digest and your homepage feed. See All by Elizabeth Lopatto Substack has updated its partnership with betting platform Polymarket, “introducing native tools that make it easier to share, discuss, and debate prediction market data directly on Substack.” Additionally, Polymarket will effectively pay “a cohort of creators,” including Matt Yglesias, to use its data though the newsletter platform’s pilot sponsorships program. This is just the latest foray of prediction markets into media. Last week, Dow Jones agreed to incorporate Polymarket’s betting data into its “content,” including The Wall Street Journal. A month before that, CNN incorporated Kalshi’s betting odds. In December, CNBC agreed to infuse its programming with Kalshi data. Noted poker player Nate Silver, once a respected stats journalist, is now an advisor for Polymarket. “If you get the news before it happens, that should be even more economically valuable.” This looks like a concerted effort to confuse people about what news is and does. Here’s Robinhood’s CEO Vlad Tenev, one of the leading profiteers from America’s financial nihilism: “I like to think about prediction markets as the next generation of the news. We know the news is economically valuable. People pay for getting the newspaper; they pay indirectly for shows like this [Squawk on the Street on CNBC] through advertising, and so if you get the news before it happens, that should be even more economically valuable.” Let’s stop for a moment and think about what news is, since the slippage in Tenev’s quote (“if you get the news before it happens”) highlights the problem with his line of thought. It kind of seems like people have recently become confused about the difference between information, journalism, and “content.” The earliest known predecessor to journalism is Rome’s Acta Diurna, which was in circulation more than two millennia ago — basically an official record of events, such as births, new laws, and financial data. (A similar publication circulated in China starting in the Tang dynasty.) In 15th-century Europe, businessmen began disseminating written accounts of important events to their contacts; this is essentially the predecessor to the modern newspaper. Do you notice anything here? That’s right: News is a record of things that have happened. Weather forecasts and horoscopes aside, newspapers do not traffic in predictions. They tell you, instead, about the very recent past — what happened yesterday. An online news site, not constrained by a printing press, can even tell you what happened 20 minutes ago. But no news organization exists to predict the future. By definition, you cannot know the news before it happens. The actual function of news, however, can sometimes be obscured by what Daniel J. Boorstin calls “pseudo-events,” which are planned events that can be repeated, such as awards shows, press conferences, political conventions, and earnings calls. Unlike true events — natural disasters, a vote at the city council meeting, an assassination — the outcome of a pseudo-event can be known in advance because it is planned. Its contents can be distributed to reporters “under embargo,” so that when the pseudo-event occurs, reporters can instantaneously run a story. The conflation of betting markets and news began with political coverage Lots of publications, including this one, include coverage of pseudo-events — an Apple event is a great example — alongside the accounting of real events. In Boorstin’s The Image: A Guide to Pseudo-Events in America, he suggests that news outlets cover pseudo-events in part because there are not enough actual events to fill out the news cycle. There is also tremendous consumer demand for pseudo-events; celebrities, which are pseudo-events made flesh, are so significantly popular that an entire ecosystem of publications exists for them. Pseudo-events have overtaken actual events in Hollywood, where they have long been generated to create marketing for movies. The other place where pseudo-events dominate real events is politics. Speeches are pseudo-events, which is why journalists often receive the drafted remarks in advance; so are press conferences, social media beefs, ribbon-cuttings, and the Presidential pardoning of a turkey. I bring this up because I believe the conflation of betting markets and news began with political coverage. In 2024, no one was sure how reliable presidential polling was — since people were increasingly using mobile phones rather than landlines, and often not picking up because of a deluge of spam calls. Polls, of course, look more like pseudo-events (press releases) than actual ones (six-car pileups), and exist in part to drive conversation. They are not the same thing as news; polls are, at best, a snapshot of a specific group at a specific time asked specifically -worded questions and, at worst, political horoscopes. I’m not convinced newspapers should be in the business of reporting on polls, much less running them. Still, people — at least editors and reporters, and maybe the audience too — wanted some indication of what might happen in a presidential election. Prediction markets were so confident that Trump would beat Harris that they made traditional newspapers, which saw the race as a toss up, look like they were waffling. (And if you don’t really understand how probability works, you too probably think Polymarket was more correct than “tossup.”) So betting markets were suggested as a viable alternative to polls; the idea was that people were so confident in a specific outcome that they were willing to wager on it. And that’s how odds on Polymarket and Kalshi started to creep into stories. “These markets have changed the way people consume news.” The other argument in favor of betting markets, as made by their advocates, is that they contain insider information. This is “cool,” according to Polymarket’s CEO, Shayne Coplan. It is also illegal. That doesn’t matter much to the purveyors of gambling-addiction-as-a-service; because contracts are peer-to-peer, the house isn’t getting ripped off. It’s only the punters dumb enough to enter the bet without insider information who’ll lose their shirts. There are several examples of plausible insider trading on predictions markets: the entity who cashed out with almost half a million dollars when the US snatched Venezuela’s president, for instance — an actual event that occurred in order to create pseudo-events. (Baudrillard would be so proud!) Or the bettor who made more than $1 million by placing bets on what Google’s 2025 Year in Search rankings would be. Or the trader who made $50,000 by betting correctly on the recipient of the Nobel Peace Prize. A great deal of volume in prediction markets is sports betting, though predictions markets mechanically work slightly differently than straight sports bets. A standard sports bet has the punter taking one side and the house taking the other; in prediction markets, there are punters on both ends, and the house just takes a cut of the trade. Also, prediction markets deal in contracts, which can lead to ambiguity — such as whether Cardi B’s dance during Bad Bunny’s Super Bowl halftime show counted as a performance. It is possible for the spirit of a contract to be fulfilled (the US kidnapped the president of Venezuela) while the letter isn’t (according to Polymarket, this was not an “invasion”). It is unclear to me how helping gambling companies rip off your audience serves the public interest This distinction, silly as it sounds, may actually matter. While some states have indicated they believe prediction markets should follow the legal framework for sports betting, the feds think those states should fuck right off. Any moves by the states to limit insider trading on betting markets will be blocked by Mike Selig, the chair of the Commodity Futures Trading Commission. “These markets have changed the way people consume news,” Selig says, accurately. Obviously, as the Year in Search and Nobel Prize bets show, it’s easier to correctly bet on a pseudo-event than an actual one. But the consequences of insider information on actual information are potentially more devastating — the leakage of state secrets, and not to protect the public. As media critic Matt Pearce points out, there’s a problem of incentives: ethical journalists cannot pay sources, but prediction markets do. Of course, for the insiders to make their money, there must be a steady supply of suckers. And there is! Only about a third of traders actually make profits, and “a large number of traders systematically lose money to a small minority of skilled participants.” So by partnering with these betting markets, news organizations — from the legacy entities like WSJ or CNN to the burgeoning new media platforms like Substack — have undercut themselves two ways: first, by commodifying information and then by effectively endorsing competitors who can pay for that information; and second, by serving as advertising for prediction markets, making their audience vulnerable to getting ripped off by insiders. It is unclear to me how helping gambling companies rip off your audience serves the public interest, which is, or at least once was, the point of newsgathering. A cynic might suggest that the move to embed betting markets in newsrooms is mere marketing And the public interest is why most of us got into this business in the first place. Most journalists aim to reflect reality back to readers, without any particular interest in whether that makes said reader wealthier. The Fourth Estate, as news organizations are sometimes called, is meant to wield political power by uncovering wrongdoing, embarrassing the government into action. From Enron to Theranos, multiple frauds were first uncovered not by the SEC, but by the press. Back when corruption mattered in politics, many of those scandals — from Watergate to whatever we want to call George Santos’ whole deal — were also discovered by journalists rather than the Department of Justice. This is not to say that reporters are always right, or that journalism always achieves its highest calling. I am, after all, old enough to remember the non-existent “weapons of mass destruction” that The New York Times reported on to justify the war in Iraq. But as suggested by my catty little remark about the WMDs, journalists are expected to be accountable for their mistakes. Any reputable newspaper or magazine runs a correction when even a word is off. (That NYT refuses to admit to its major errors is a longstanding area of consternation among other journalists.) Prediction markets, on the other hand, make their money through transaction fees — and thus through volume. In true nihilistic fashion, these markets care less about the outcome of a contract than an actual casino. It is possible to feel betrayed by the various failures of mainstream media, but Kalshi, Polymarket, and Robinhood are only after your money. A cynic might suggest that the move to embed betting markets in newsrooms is mere marketing: an attempt to signal that these are somehow different from, and superior to, casinos. Certainly that’s what I think. What’s less clear to me is why newsrooms are going along for the ride. (I have my suspicions about why this makes sense to Substack.) Is Dow Jones so strapped for cash that it’s stooped to this? Or is it the case that the people running CNN, CNBC, and Dow Jones truly have gotten so confused by pseudo-events that they no longer understand the difference between concocted media circuses and actual happenings in the world? I also wonder whether this push to legitimize gambling will undermine trust in people who are trained and accountable, who specialize in writing about reality. In the same way that many audiences prefer pseudo-events to events, we may discover that people prefer the “wisdom” of thousands of anons attempting to predict the future to actual reporting on the current conditions around us. Seems like that’s what Polymarket and Kalshi are betting on, anyway. Posts from this author will be added to your daily email digest and your homepage feed. See All by Elizabeth Lopatto Posts from this topic will be added to your daily email digest and your homepage feed. See All Analysis Posts from this topic will be added to your daily email digest and your homepage feed. See All Business Posts from this topic will be added to your daily email digest and your homepage feed. See All Policy Posts from this topic will be added to your daily email digest and your homepage feed. See All Politics Posts from this topic will be added to your daily email digest and your homepage feed. See All Report Posts from this topic will be added to your daily email digest and your homepage feed. See All Social Media Posts from this topic will be added to your daily email digest and your homepage feed. See All Tech More in: Everything is gambling now: the latest news on prediction markets like Polymarket and Kalshi Most Popular The Verge Daily A free daily digest of the news that matters most. This is the title for the native ad More in Business This is the title for the native ad Top Stories © 2026 Vox Media, LLC. All Rights Reserved
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[SOURCE: https://www.wired.com/story/burnt-hair-and-soft-power-a-night-out-with-evie-magazine/] \| [TOKENS: 4727]
Leah FeigerPoliticsFeb 18, 2026 11:00 AMBurnt Hair and Soft Power: A Night Out With Evie MagazineEvie is a longtime favorite of the far-right. At its very first live event, the strength of the publication’s politics was in the pretense that it doesn’t have any.Photo-Illustration: WIRED Staff; Getty ImagesCommentLoaderSave StorySave this storyCommentLoaderSave StorySave this storyJust after 8 pm on Sunday night, Evie Magazine’s first live event was finally getting started. The women’s magazine, which was founded in 2019 and once described itself as a “conservative Cosmo,” welcomed eager fans to celebrate the publication, generally, and its new issue, specifically, during New York Fashion Week at the Standard Hotel’s Boom in Chelsea.Guests lined up outside, hugging fur coats around formal dresses, as hosts scanned a list for their names. One blonde woman begged for access to the VIP section; an event planner ran downstairs to tell her coworkers that someone’s hair had caught on fire. Upstairs, women crowded the entrance for the chance to be photographed against a larger-than-life plastic Evie Magazine cover that declared, “Welcome to the Romantic Era.” (The other cover lines: “‘Your secret feminine power,” “12 ways to make him swoon,” and “Feminine fashion we love: corsets, dresses, & drama.”)The party was hosted by Brittany Hugoboom, the editor in chief, and her cofounder and husband Gabriel Hugoboom. The invitation billed it as a “celebration of romance & beauty,” with attendees promised an “immersive night of live music, gorgeous visuals, captivating performances, delicious food and drinks, and a secret reveal.”Aside from the lingering stench of burnt hair and the prominent “EVIE” projected above the wraparound gold bar, it was hard to distinguish the event from any other party, which certainly seemed like the point. There was virtually no overt mention of politics, and the kind of conservatism in the air had more to do with Sydney Sweeney than abstinence.But Evie, which critics call “alt-right,” is inherently political. Evie has been soundly embraced by different corners of the Republican Party: Candace Owens, Steve Bannon, and Brett Cooper—a conservative commentator who attended the party—all champion Evie. The magazine itself, meanwhile, traffics in conspiracy theories, shares anti-vaccine content, dispenses tradwife inspo (remember Ballerina Farm?), rejects “modern” feminism, and pushes an app founded by the Hugobooms called 28, where users log information about their periods to calculate their menstrual cycle. Advertisements for the app, which was initially funded in part by Palantir cofounder Peter Thiel, run next to articles that criticize hormonal birth control and push women to get off the pill. (Brittany Hugoboom told The New York Times that she pitched Thiel, one of many conservatives concerned about declining US birthrates, on the “fertility crisis.”)If you think all of this sounds more or less like what you’d get from any right-wing media enterprise these days, you’d be correct. What distinguishes Evie, aside from its unusual soft-focus photography of glamorously dressed women milking cows, is that this sort of content runs alongside listicles titled, for example, “7 Questions to Ask Early If You Want a Serious Relationship” or “How to Dress Like Olivia Dean on a Budget.” It’s a classic example of soft power in action—just as the appeal of mid-century Hollywood films wasn’t necessarily the anti-Communist messaging but the glitz and glamour, the strength of Evie’s politics are in its pretense that it doesn’t have any.To many attendees, that is the goal not just of the party, but of Evie in general. “That’s how we shift the culture,” said one attendee, who asked to remain anonymous due to the sensitive nature of her career. She credited Evie with the beginning of a Republican cultural revival. “We’ve been so policy-focused that we lost the culture, and we need to take that back if we want to win.” That’s what made this party notable. Evie’s conservatism-without-conservatism messaging has long drawn attention (including profiles by numerous publications). But now, going into a consequential midterm election in which the polls look grim for the GOP, that messaging seems less a curiosity than a necessity. Here at least was proof of the concept that Evie-ism can make a compelling backdrop for young women unsure about what the Republican movement means to them.The anonymous attendee also told me Evie’s content really just resonated with her. “Evie has done a great job of combining the fashion, the high fashion, the beautiful photography, and beautiful art that we as women know and love that we were getting from the Vogues, but we didn't want to be lectured about the values that we don't agree with,” she said.For subscribers, there is no better messenger than the editor in chief, who introduced the print cover at the beginning of the party for the new, sex-themed issue. (While sex was the topic of the evening, Evie articles and even guests at the party were quick to assure me that it’s an activity for married couples only.) “We started with a mission to embrace femininity,” Brittany Hugoboom announced. “I think we’re ahead of the curve.”“We want to officially declare tonight: Romance is back,” added Gabriel Hugoboom.Photographs from the new issue were then physically unveiled around the room. For all the talk of the lost art of the feminine mystique, the photographs, featuring a woman clad in lace smoldering at the camera with her long hair tossed into the shadows, more than anything recalled the lost arts of the Victoria’s Secret catalog circa 2002.With Evie’s emphasis on appealing to the young woman of the moment, you would be forgiven for thinking that not just the cover shoot but the party had taken place 15 years ago. While attendees appeared to be young women and men primarily under the age of 30, slow, jazzy covers of Lana Del Rey’s “Summertime Sadness” and Britney Spears’ “Hit Me Baby One More Time” played over the speakers. The event space, Boom—formerly known as the Boom Boom Room—used to be one of New York’s most exclusive clubs; it’s now for private events only and appears in the cultural zeitgeist periodically as a post–Met Gala party location.At the peak of the club’s fame in 2010, Gossip Girl, a teen soap opera about privileged students on Manhattan’s Upper East Side, filmed an episode there, featuring a cameo from Ivanka Trump and Jared Kushner in which they celebrated the New York Observer and its bachelor of the year award. (In real life, Kushner still owned the newspaper, before he sold it in 2017 amidst accusations of editorial interference.) It’s difficult to imagine any members of the Trump family receiving a role on mainstream television these days, but in those days Donald Trump was not president, and the couple, who had not yet fled for Florida, was still enjoying their role as an enviable pair in the city’s social hierarchy. In context, in fact, Kushner’s was the bolder-faced name.It felt extra fitting, then, for Boom, where a mainstream show had sanitized the Trumps years before, to be the site of yet another celebration where its hosts strove to make conservatism as palatable, envy-inducing, and glamorous as possible.“I know some women who read Evie who aren't even conservative, and a lot of the content for Evie, it's just fun, it's just interesting. But for women who want to be into beauty and conservative, it's great that they ask for that type of thing,” said Lauren Chen, a conservative commentator from Canada. Chen cofounded Tenet Media, which US federal prosecutors alleged in 2024 was receiving funding and guidance from a covert Russian influence operation. In a post on X in September 2025, Chen denied the allegations.Even the simply fun and interesting content from Evie often betrays, if not political leanings, at least a sensibility. One aspiring content creator, Camila Bronson, told me she wrote an article for Evie about “why personal alignment is the ultimate political act.” She basically posited the government as a bad boyfriend: “When you are sovereign in yourself, you don’t need to be controlled by a government. So it’s about becoming ungovernable, and finding ways to be more independent of the grid, such as regenerative agriculture, learning how to plant, or cooking … little ways, where you build sovereignty in your life, instead of, like, relying on, you know, someone else that doesn't really care about you.” Whether this was conservativism as relationship advice or the reverse was hard to say.Many attendees, though, just seemed thrilled to be there, less concerned with any political underpinnings than with the photo booth in the corner and the DJ wearing Retrofête. At the VIP tables, red anthurium flowers—the very perennials that inspired numerous yonic Georgia O’Keefe paintings—drooped above cigarette cartons served on silver étagère trays. Women sporting Yves Saint Laurent and Prada bags sipped cocktails named “Wild at Heart,” “Decent Proposal,” and “French Kiss.” The mocktail was called “Sweet Nothing.” A former Miss New York beauty pageant winner walked around the room.While on a smoke break, several tuxedo-suited men fawned over how much they liked Sydney Sweeney. Women were clad in Love Shack Fancy, Cult Gaia, and Reformation. I didn’t see any of Evie’s famous raw milkmaid dresses—a limited-edition fashion drop from the magazine that capitalized on tradwife content—but it was nighttime and also Fashion Week.“The party was apolitical, that's how I felt,” said Pariah the Doll, a New York model and artist known for detransitioning. But, they added, “Everyone I knew there was from Republican circles. I saw people I knew from the Republican Club gala. I saw people that I know from church, but we didn't discuss politics.” Pariah just walked in conservative designer Elena Velez’s New York Fashion Week show with Clavicular, a streamer popular on the right wing who has brought “looksmaxxing”—the singular focus on men increasing their physical attractiveness—to the mainstream. (The language that’s come from the looksmaxxing or manosphere communities cropped up at the party: “We’re definitely mogging on every other event happening tonight,” Gabriel Hugoboom said in his speech.)Scrolling through the reposted photographs on Evie’s Instagram the day after the party, the accounts started to blend. “I love God, my family, moving my body, optimizing my health,” read one Instagram bio. “Controversial woman of God,” “Jesus Christ - The Way, The Truth, and The Life,” and “Aspiring trophy wife, lover of Jesus” read more. Other partygoers, according to Instagram, had mainly been models.This is an edition of the Inner Loop newsletter. Read previous newsletters here. Burnt Hair and Soft Power: A Night Out With Evie Magazine Just after 8 pm on Sunday night, Evie Magazine’s first live event was finally getting started. The women’s magazine, which was founded in 2019 and once described itself as a “conservative Cosmo,” welcomed eager fans to celebrate the publication, generally, and its new issue, specifically, during New York Fashion Week at the Standard Hotel’s Boom in Chelsea. Guests lined up outside, hugging fur coats around formal dresses, as hosts scanned a list for their names. One blonde woman begged for access to the VIP section; an event planner ran downstairs to tell her coworkers that someone’s hair had caught on fire. Upstairs, women crowded the entrance for the chance to be photographed against a larger-than-life plastic Evie Magazine cover that declared, “Welcome to the Romantic Era.” (The other cover lines: “‘Your secret feminine power,” “12 ways to make him swoon,” and “Feminine fashion we love: corsets, dresses, & drama.”) The party was hosted by Brittany Hugoboom, the editor in chief, and her cofounder and husband Gabriel Hugoboom. The invitation billed it as a “celebration of romance & beauty,” with attendees promised an “immersive night of live music, gorgeous visuals, captivating performances, delicious food and drinks, and a secret reveal.” Aside from the lingering stench of burnt hair and the prominent “EVIE” projected above the wraparound gold bar, it was hard to distinguish the event from any other party, which certainly seemed like the point. There was virtually no overt mention of politics, and the kind of conservatism in the air had more to do with Sydney Sweeney than abstinence. But Evie, which critics call “alt-right,” is inherently political. Evie has been soundly embraced by different corners of the Republican Party: Candace Owens, Steve Bannon, and Brett Cooper—a conservative commentator who attended the party—all champion Evie. The magazine itself, meanwhile, traffics in conspiracy theories, shares anti-vaccine content, dispenses tradwife inspo (remember Ballerina Farm?), rejects “modern” feminism, and pushes an app founded by the Hugobooms called 28, where users log information about their periods to calculate their menstrual cycle. Advertisements for the app, which was initially funded in part by Palantir cofounder Peter Thiel, run next to articles that criticize hormonal birth control and push women to get off the pill. (Brittany Hugoboom told The New York Times that she pitched Thiel, one of many conservatives concerned about declining US birthrates, on the “fertility crisis.”) If you think all of this sounds more or less like what you’d get from any right-wing media enterprise these days, you’d be correct. What distinguishes Evie, aside from its unusual soft-focus photography of glamorously dressed women milking cows, is that this sort of content runs alongside listicles titled, for example, “7 Questions to Ask Early If You Want a Serious Relationship” or “How to Dress Like Olivia Dean on a Budget.” It’s a classic example of soft power in action—just as the appeal of mid-century Hollywood films wasn’t necessarily the anti-Communist messaging but the glitz and glamour, the strength of Evie’s politics are in its pretense that it doesn’t have any. To many attendees, that is the goal not just of the party, but of Evie in general. “That’s how we shift the culture,” said one attendee, who asked to remain anonymous due to the sensitive nature of her career. She credited Evie with the beginning of a Republican cultural revival. “We’ve been so policy-focused that we lost the culture, and we need to take that back if we want to win.” That’s what made this party notable. Evie’s conservatism-without-conservatism messaging has long drawn attention (including profiles by numerous publications). But now, going into a consequential midterm election in which the polls look grim for the GOP, that messaging seems less a curiosity than a necessity. Here at least was proof of the concept that Evie-ism can make a compelling backdrop for young women unsure about what the Republican movement means to them. The anonymous attendee also told me Evie’s content really just resonated with her. “Evie has done a great job of combining the fashion, the high fashion, the beautiful photography, and beautiful art that we as women know and love that we were getting from the Vogues, but we didn't want to be lectured about the values that we don't agree with,” she said. For subscribers, there is no better messenger than the editor in chief, who introduced the print cover at the beginning of the party for the new, sex-themed issue. (While sex was the topic of the evening, Evie articles and even guests at the party were quick to assure me that it’s an activity for married couples only.) “We started with a mission to embrace femininity,” Brittany Hugoboom announced. “I think we’re ahead of the curve.” “We want to officially declare tonight: Romance is back,” added Gabriel Hugoboom. Photographs from the new issue were then physically unveiled around the room. For all the talk of the lost art of the feminine mystique, the photographs, featuring a woman clad in lace smoldering at the camera with her long hair tossed into the shadows, more than anything recalled the lost arts of the Victoria’s Secret catalog circa 2002. With Evie’s emphasis on appealing to the young woman of the moment, you would be forgiven for thinking that not just the cover shoot but the party had taken place 15 years ago. While attendees appeared to be young women and men primarily under the age of 30, slow, jazzy covers of Lana Del Rey’s “Summertime Sadness” and Britney Spears’ “Hit Me Baby One More Time” played over the speakers. The event space, Boom—formerly known as the Boom Boom Room—used to be one of New York’s most exclusive clubs; it’s now for private events only and appears in the cultural zeitgeist periodically as a post–Met Gala party location. At the peak of the club’s fame in 2010, Gossip Girl, a teen soap opera about privileged students on Manhattan’s Upper East Side, filmed an episode there, featuring a cameo from Ivanka Trump and Jared Kushner in which they celebrated the New York Observer and its bachelor of the year award. (In real life, Kushner still owned the newspaper, before he sold it in 2017 amidst accusations of editorial interference.) It’s difficult to imagine any members of the Trump family receiving a role on mainstream television these days, but in those days Donald Trump was not president, and the couple, who had not yet fled for Florida, was still enjoying their role as an enviable pair in the city’s social hierarchy. In context, in fact, Kushner’s was the bolder-faced name. It felt extra fitting, then, for Boom, where a mainstream show had sanitized the Trumps years before, to be the site of yet another celebration where its hosts strove to make conservatism as palatable, envy-inducing, and glamorous as possible. “I know some women who read Evie who aren't even conservative, and a lot of the content for Evie, it's just fun, it's just interesting. But for women who want to be into beauty and conservative, it's great that they ask for that type of thing,” said Lauren Chen, a conservative commentator from Canada. Chen cofounded Tenet Media, which US federal prosecutors alleged in 2024 was receiving funding and guidance from a covert Russian influence operation. In a post on X in September 2025, Chen denied the allegations. Even the simply fun and interesting content from Evie often betrays, if not political leanings, at least a sensibility. One aspiring content creator, Camila Bronson, told me she wrote an article for Evie about “why personal alignment is the ultimate political act.” She basically posited the government as a bad boyfriend: “When you are sovereign in yourself, you don’t need to be controlled by a government. So it’s about becoming ungovernable, and finding ways to be more independent of the grid, such as regenerative agriculture, learning how to plant, or cooking … little ways, where you build sovereignty in your life, instead of, like, relying on, you know, someone else that doesn't really care about you.” Whether this was conservativism as relationship advice or the reverse was hard to say. Many attendees, though, just seemed thrilled to be there, less concerned with any political underpinnings than with the photo booth in the corner and the DJ wearing Retrofête. At the VIP tables, red anthurium flowers—the very perennials that inspired numerous yonic Georgia O’Keefe paintings—drooped above cigarette cartons served on silver étagère trays. Women sporting Yves Saint Laurent and Prada bags sipped cocktails named “Wild at Heart,” “Decent Proposal,” and “French Kiss.” The mocktail was called “Sweet Nothing.” A former Miss New York beauty pageant winner walked around the room. While on a smoke break, several tuxedo-suited men fawned over how much they liked Sydney Sweeney. Women were clad in Love Shack Fancy, Cult Gaia, and Reformation. I didn’t see any of Evie’s famous raw milkmaid dresses—a limited-edition fashion drop from the magazine that capitalized on tradwife content—but it was nighttime and also Fashion Week. “The party was apolitical, that's how I felt,” said Pariah the Doll, a New York model and artist known for detransitioning. But, they added, “Everyone I knew there was from Republican circles. I saw people I knew from the Republican Club gala. I saw people that I know from church, but we didn't discuss politics.” Pariah just walked in conservative designer Elena Velez’s New York Fashion Week show with Clavicular, a streamer popular on the right wing who has brought “looksmaxxing”—the singular focus on men increasing their physical attractiveness—to the mainstream. (The language that’s come from the looksmaxxing or manosphere communities cropped up at the party: “We’re definitely mogging on every other event happening tonight,” Gabriel Hugoboom said in his speech.) Scrolling through the reposted photographs on Evie’s Instagram the day after the party, the accounts started to blend. “I love God, my family, moving my body, optimizing my health,” read one Instagram bio. “Controversial woman of God,” “Jesus Christ - The Way, The Truth, and The Life,” and “Aspiring trophy wife, lover of Jesus” read more. Other partygoers, according to Instagram, had mainly been models. This is an edition of the Inner Loop newsletter. Read previous newsletters here. Comments You Might Also Like In your inbox: Maxwell Zeff's dispatch from the heart of AI ICE is expanding at breakneck speed—here’s where it’s going next Big Story: Inside the gay tech mafia Big Tech says AI will save the planet—it doesn’t offer much proof Event: Helping small business owners succeed © 2026 Condé Nast. All rights reserved. WIRED may earn a portion of sales from products that are purchased through our site as part of our Affiliate Partnerships with retailers. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Condé Nast. Ad Choices
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[SOURCE: https://en.wikipedia.org/wiki/Fast.ai#cite_note-3] \| [TOKENS: 302]
Contents fast.ai fast.ai is a non-profit research group focused on deep learning and artificial intelligence. It was founded in 2016 by Jeremy Howard and Rachel Thomas with the goal of democratizing deep learning. They do this by providing a massive open online course (MOOC) named "Practical Deep Learning for Coders," which has no other prerequisites except for knowledge of the programming language Python. Massive Open Online Course The free MOOC "Practical Deep Learning for Coders" is available as recorded videos, initially taught by Howard and Thomas at the University of San Francisco. In contrast to other online learning platforms such as Coursera or Udemy, a certificate is not granted to those successfully finishing the course online. Only the students following the in-person classes can obtain a certificate from the University of San Francisco. The MOOC consists of two parts, each containing seven lessons. Topics include image classification, stochastic gradient descent, natural language processing (NLP), and various deep learning architectures such as convolutional neural networks (CNNs), recursive neural networks (RNNs) and generative adversarial networks (GANs). Applications and alumni Software In the fall of 2018, fast.ai released v1.0 of their free open-source library for deep learning called fastai (without a period), sitting atop PyTorch. Google Cloud was the first to announce its support. This open-source framework is hosted on GitHub and is licensed under the Apache License, Version 2.0. References External links
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[SOURCE: https://news.ycombinator.com/item?id=47047027] \| [TOKENS: 3209]
But Lean 4 is significantly more rigid, granular, and foundational than Event-B, and they handle concepts like undefined areas and contradictions very differently. While both are "formal methods," they were built by different communities for different purposes: Lean is a pure mathematician's tool, while Event-B is a systems engineer's tool. Event-B is much more flexible, allowing an engineer (or the LLM) to sketch the vague, undefined contours of a system and gradually tighten the logical constraints through refinement.LLMs are inherently statistical interpolators. They operate beautifully in an Open World (where missing information is just "unknown" and can be guessed or left vague) and they use Non-Monotonic Reasoning (where new information can invalidate previous conclusions). Lean 4 operates strictly on the Closed World Assumption (CWA) and is brutally Monotonic. This is why using Lean to model things humans care about (business logic, user interfaces, physical environments, dynamic regulations) quickly hits a dead end. The physical world is full of exceptions, missing data, and contradictions. Lean 4 is essentially a return to the rigid, brittle dreams of the 1980s Expert Systems. Event-B provides the logical guardrails, but critically, it tolerates under-specification. It doesn't force the LLM to solve the Frame Problem or explicitly define the whole universe. It just checks the specific boundaries the human cares about. LLMs are inherently statistical interpolators. They operate beautifully in an Open World (where missing information is just "unknown" and can be guessed or left vague) and they use Non-Monotonic Reasoning (where new information can invalidate previous conclusions). Lean 4 operates strictly on the Closed World Assumption (CWA) and is brutally Monotonic. This is why using Lean to model things humans care about (business logic, user interfaces, physical environments, dynamic regulations) quickly hits a dead end. The physical world is full of exceptions, missing data, and contradictions. Lean 4 is essentially a return to the rigid, brittle dreams of the 1980s Expert Systems. Event-B provides the logical guardrails, but critically, it tolerates under-specification. It doesn't force the LLM to solve the Frame Problem or explicitly define the whole universe. It just checks the specific boundaries the human cares about. reply Over the past year, I went from fully manual mode (occasionally asking chat gpt some Lean questions) to fully automatic mode, where I barely do Lean proofs myself now (and just point AI to the original .tex files, in German). It is hard to believe how much the models and agentic harnesses improved over the last year.I cannot describe how much fun it is to do refactorings with AI on a verified Lean project!Also, it's so easy now to have visualizations and typesetted documents generated by AI, from dependency visualizations of proofs using the Lean reflection API, to visual execution traces of cellular automatas. I cannot describe how much fun it is to do refactorings with AI on a verified Lean project!Also, it's so easy now to have visualizations and typesetted documents generated by AI, from dependency visualizations of proofs using the Lean reflection API, to visual execution traces of cellular automatas. Also, it's so easy now to have visualizations and typesetted documents generated by AI, from dependency visualizations of proofs using the Lean reflection API, to visual execution traces of cellular automatas. reply reply https://artagnon.com/logic/leancoq https://github.com/rocq-prover/rocq/issues/10871 https://github.com/rocq-prover/rocq/issues/10871 reply This misses a point that software engineers initmately know especially ones using ai tools:* Proofs are one QA tool* Unit tests, integration tests and browser automation are other tools.* Your code can have bugs because it fails a test above BUT...* You may have got the requirements wrong!Working with claude code you can have productive loops getting it to assist you in writing tests, finding bugs you hadn't spotted and generally hardening your code.It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. * Proofs are one QA tool* Unit tests, integration tests and browser automation are other tools.* Your code can have bugs because it fails a test above BUT...* You may have got the requirements wrong!Working with claude code you can have productive loops getting it to assist you in writing tests, finding bugs you hadn't spotted and generally hardening your code.It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. * Unit tests, integration tests and browser automation are other tools.* Your code can have bugs because it fails a test above BUT...* You may have got the requirements wrong!Working with claude code you can have productive loops getting it to assist you in writing tests, finding bugs you hadn't spotted and generally hardening your code.It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. * Your code can have bugs because it fails a test above BUT...* You may have got the requirements wrong!Working with claude code you can have productive loops getting it to assist you in writing tests, finding bugs you hadn't spotted and generally hardening your code.It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. * You may have got the requirements wrong!Working with claude code you can have productive loops getting it to assist you in writing tests, finding bugs you hadn't spotted and generally hardening your code.It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. Working with claude code you can have productive loops getting it to assist you in writing tests, finding bugs you hadn't spotted and generally hardening your code.It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. It takes taste and dev experience definitely helps (as of Jan 26)So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. So I think hallucinations and proofs as the fix is a bit barking up the wrong treeThe solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. The solution to hallucinations is careful shaping of the agent environment around the project to ensure quality.Proofs may be part of the qa toolkit for AI coded projects but probably rarely. Proofs may be part of the qa toolkit for AI coded projects but probably rarely. reply reply reply So although lean4 is a programming language that people can use to write “normal” programs, when you use it as a proof assistant this is what you are doing - stating propositions and then using a combination of a (very extensive) library of previous results, your own ingenuity using the builtins of the language and (in my experience anyway) a bunch of brute force to instantiate the type thus proving the proposition. reply Python and C though have enough nasal demons and undefined behavior that it's a huge pain to verify things about them, since some random other thread can drive by and modify memory in another thread. reply https://github.com/teorth/analysisHe also has blogged about how he uses lean for his research.Edit to add: Looking at that repo, one thing I like (but others may find infuriating idk) is that where in the text he leaves certain proofs as exercises for the reader, in the repo he turns those into “sorry”s, so you can fork the repo and have a go at proving those things in lean yourself.If you have some proposition which you need to use as the basis of further work but you haven’t completed a formal proof of yet, in lean, you can just state the proposition with the proof being “sorry”. Lean will then proceed as though that proposition had been proved except that it will give you a warning saying that you have a sorry. For something to be proved in lean you have to have it done without any “sorry”s. https://lean-lang.org/doc/reference/latest/Tactic-Proofs/Tac... He also has blogged about how he uses lean for his research.Edit to add: Looking at that repo, one thing I like (but others may find infuriating idk) is that where in the text he leaves certain proofs as exercises for the reader, in the repo he turns those into “sorry”s, so you can fork the repo and have a go at proving those things in lean yourself.If you have some proposition which you need to use as the basis of further work but you haven’t completed a formal proof of yet, in lean, you can just state the proposition with the proof being “sorry”. Lean will then proceed as though that proposition had been proved except that it will give you a warning saying that you have a sorry. For something to be proved in lean you have to have it done without any “sorry”s. https://lean-lang.org/doc/reference/latest/Tactic-Proofs/Tac... Edit to add: Looking at that repo, one thing I like (but others may find infuriating idk) is that where in the text he leaves certain proofs as exercises for the reader, in the repo he turns those into “sorry”s, so you can fork the repo and have a go at proving those things in lean yourself.If you have some proposition which you need to use as the basis of further work but you haven’t completed a formal proof of yet, in lean, you can just state the proposition with the proof being “sorry”. Lean will then proceed as though that proposition had been proved except that it will give you a warning saying that you have a sorry. For something to be proved in lean you have to have it done without any “sorry”s. https://lean-lang.org/doc/reference/latest/Tactic-Proofs/Tac... If you have some proposition which you need to use as the basis of further work but you haven’t completed a formal proof of yet, in lean, you can just state the proposition with the proof being “sorry”. Lean will then proceed as though that proposition had been proved except that it will give you a warning saying that you have a sorry. For something to be proved in lean you have to have it done without any “sorry”s. https://lean-lang.org/doc/reference/latest/Tactic-Proofs/Tac... reply - Lean supports calling out as a tactic, allowing you to call LLMs or other AI as judges (ie, they return a judgment about a claim)- Lean can combine these judgments from external systems according to formal theories (ie, normal proof mechanics)- an LLM engaged in higher order reasoning can decompose its thinking into such logical steps of fuzzy blocks- this can be done recursively, eg, having a step that replaces LLM judgments with further logical formulations of fuzzy judgments from the LLMSomething, something, sheaves. - Lean can combine these judgments from external systems according to formal theories (ie, normal proof mechanics)- an LLM engaged in higher order reasoning can decompose its thinking into such logical steps of fuzzy blocks- this can be done recursively, eg, having a step that replaces LLM judgments with further logical formulations of fuzzy judgments from the LLMSomething, something, sheaves. - an LLM engaged in higher order reasoning can decompose its thinking into such logical steps of fuzzy blocks- this can be done recursively, eg, having a step that replaces LLM judgments with further logical formulations of fuzzy judgments from the LLMSomething, something, sheaves. - this can be done recursively, eg, having a step that replaces LLM judgments with further logical formulations of fuzzy judgments from the LLMSomething, something, sheaves. Something, something, sheaves. reply This happened to me with idris and many others, I took some time to learn the basics, wrote some examples and then FFI was a joke or code generators for JavaScript absolutely useless.So no way of leveraging an existing ecosystem. So no way of leveraging an existing ecosystem. reply reply “The current interface was designed for internal use in Lean and should be considered unstable. It will be refined and extended in the future.“My point is that in order to use these problem provers you really gotta be sure you need them, otherwise interaction with an external ecosystem might be a dep/compilation nightmare or bridge over tcp just to use libraries. My point is that in order to use these problem provers you really gotta be sure you need them, otherwise interaction with an external ecosystem might be a dep/compilation nightmare or bridge over tcp just to use libraries. reply reply What's the HN stance on AI bots? To me it just seems rude - this is a space for people to discuss topics that interest them & AI contributions just add noise. reply reply When you ground a system in formalized logic rather than probabilistic weights, you don't just get better results; you get mathematical guarantees. Relying on continuous approximation is fine for chat, but building truly robust systems requires discrete, deterministic proofs. This is exactly the paradigm shift needed. reply reply https://old.reddit.com/r/totallynotrobotsPS: Of course that's not true. An ID system for humans will inevitably become mandatory and, naturally, politicians will soon enough create a reason to use it for enforcing a planet wide totalitarian government watched over by Big Brother.Conspiracy-theory-nonsense? Maybe! I'll invite some billionaires to pizza and ask them what they think. PS: Of course that's not true. An ID system for humans will inevitably become mandatory and, naturally, politicians will soon enough create a reason to use it for enforcing a planet wide totalitarian government watched over by Big Brother.Conspiracy-theory-nonsense? Maybe! I'll invite some billionaires to pizza and ask them what they think. Conspiracy-theory-nonsense? Maybe! I'll invite some billionaires to pizza and ask them what they think. reply
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[SOURCE: https://en.wikipedia.org/wiki/Computer#cite_ref-43] \| [TOKENS: 10628]
Contents Computer A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs, which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation, or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of computers and users. Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II, both electromechanical and using thermionic valves. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power, and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (Moore's law noted that counts doubled every two years), leading to the Digital Revolution during the late 20th and early 21st centuries. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joysticks, etc.), output devices (monitors, printers, etc.), and input/output devices that perform both functions (e.g. touchscreens). Peripheral devices allow information to be retrieved from an external source, and they enable the results of operations to be saved and retrieved. Etymology It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [sic] read the truest computer of Times, and the best Arithmetician that euer [sic] breathed, and he reduceth thy dayes into a short number." This usage of the term referred to a human computer, a person who carried out calculations or computations. The word continued to have the same meaning until the middle of the 20th century. During the latter part of this period, women were often hired as computers because they could be paid less than their male counterparts. By 1943, most human computers were women. The Online Etymology Dictionary gives the first attested use of computer in the 1640s, meaning 'one who calculates'; this is an "agent noun from compute (v.)". The Online Etymology Dictionary states that the use of the term to mean "'calculating machine' (of any type) is from 1897." The Online Etymology Dictionary indicates that the "modern use" of the term, to mean 'programmable digital electronic computer' dates from "1945 under this name; [in a] theoretical [sense] from 1937, as Turing machine". The name has remained, although modern computers are capable of many higher-level functions. History Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with fingers. The earliest counting device was most likely a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres, cones, etc.) which represented counts of items, likely livestock or grains, sealed in hollow unbaked clay containers.[a] The use of counting rods is one example. The abacus was initially used for arithmetic tasks. The Roman abacus was developed from devices used in Babylonia as early as 2400 BCE. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. The Antikythera mechanism is believed to be the earliest known mechanical analog computer, according to Derek J. de Solla Price. It was designed to calculate astronomical positions. It was discovered in 1901 in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to approximately c. 100 BCE. Devices of comparable complexity to the Antikythera mechanism would not reappear until the fourteenth century. Many mechanical aids to calculation and measurement were constructed for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century. The astrolabe was invented in the Hellenistic world in either the 1st or 2nd centuries BCE and is often attributed to Hipparchus. A combination of the planisphere and dioptra, the astrolabe was effectively an analog computer capable of working out several different kinds of problems in spherical astronomy. An astrolabe incorporating a mechanical calendar computer and gear-wheels was invented by Abi Bakr of Isfahan, Persia in 1235. Abū Rayhān al-Bīrūnī invented the first mechanical geared lunisolar calendar astrolabe, an early fixed-wired knowledge processing machine with a gear train and gear-wheels, c. 1000 AD. The sector, a calculating instrument used for solving problems in proportion, trigonometry, multiplication and division, and for various functions, such as squares and cube roots, was developed in the late 16th century and found application in gunnery, surveying and navigation. The planimeter was a manual instrument to calculate the area of a closed figure by tracing over it with a mechanical linkage. The slide rule was invented around 1620–1630, by the English clergyman William Oughtred, shortly after the publication of the concept of the logarithm. It is a hand-operated analog computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes and cube roots, as well as transcendental functions such as logarithms and exponentials, circular and hyperbolic trigonometry and other functions. Slide rules with special scales are still used for quick performance of routine calculations, such as the E6B circular slide rule used for time and distance calculations on light aircraft. In the 1770s, Pierre Jaquet-Droz, a Swiss watchmaker, built a mechanical doll (automaton) that could write holding a quill pen. By switching the number and order of its internal wheels different letters, and hence different messages, could be produced. In effect, it could be mechanically "programmed" to read instructions. Along with two other complex machines, the doll is at the Musée d'Art et d'Histoire of Neuchâtel, Switzerland, and still operates. In 1831–1835, mathematician and engineer Giovanni Plana devised a Perpetual Calendar machine, which through a system of pulleys and cylinders could predict the perpetual calendar for every year from 0 CE (that is, 1 BCE) to 4000 CE, keeping track of leap years and varying day length. The tide-predicting machine invented by the Scottish scientist Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location. The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. In 1876, Sir William Thomson had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators. In a differential analyzer, the output of one integrator drove the input of the next integrator, or a graphing output. The torque amplifier was the advance that allowed these machines to work. Starting in the 1920s, Vannevar Bush and others developed mechanical differential analyzers. In the 1890s, the Spanish engineer Leonardo Torres Quevedo began to develop a series of advanced analog machines that could solve real and complex roots of polynomials, which were published in 1901 by the Paris Academy of Sciences. Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer", he conceptualized and invented the first mechanical computer in the early 19th century. After working on his difference engine he announced his invention in 1822, in a paper to the Royal Astronomical Society, titled "Note on the application of machinery to the computation of astronomical and mathematical tables". He also designed to aid in navigational calculations, in 1833 he realized that a much more general design, an analytical engine, was possible. The input of programs and data was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom. For output, the machine would have a printer, a curve plotter and a bell. The machine would also be able to punch numbers onto cards to be read in later. The engine would incorporate an arithmetic logic unit, control flow in the form of conditional branching and loops, and integrated memory, making it the first design for a general-purpose computer that could be described in modern terms as Turing-complete. The machine was about a century ahead of its time. All the parts for his machine had to be made by hand – this was a major problem for a device with thousands of parts. Eventually, the project was dissolved with the decision of the British Government to cease funding. Babbage's failure to complete the analytical engine can be chiefly attributed to political and financial difficulties as well as his desire to develop an increasingly sophisticated computer and to move ahead faster than anyone else could follow. Nevertheless, his son, Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. In his work Essays on Automatics published in 1914, Leonardo Torres Quevedo wrote a brief history of Babbage's efforts at constructing a mechanical Difference Engine and Analytical Engine. The paper contains a design of a machine capable to calculate formulas like a x ( y − z ) 2 {\displaystyle a^{x}(y-z)^{2}} , for a sequence of sets of values. The whole machine was to be controlled by a read-only program, which was complete with provisions for conditional branching. He also introduced the idea of floating-point arithmetic. In 1920, to celebrate the 100th anniversary of the invention of the arithmometer, Torres presented in Paris the Electromechanical Arithmometer, which allowed a user to input arithmetic problems through a keyboard, and computed and printed the results, demonstrating the feasibility of an electromechanical analytical engine. During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers. The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson (later to become Lord Kelvin) in 1872. The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson, the elder brother of the more famous Sir William Thomson. The art of mechanical analog computing reached its zenith with the differential analyzer, completed in 1931 by Vannevar Bush at MIT. By the 1950s, the success of digital electronic computers had spelled the end for most analog computing machines, but analog computers remained in use during the 1950s in some specialized applications such as education (slide rule) and aircraft (control systems).[citation needed] Claude Shannon's 1937 master's thesis laid the foundations of digital computing, with his insight of applying Boolean algebra to the analysis and synthesis of switching circuits being the basic concept which underlies all electronic digital computers. By 1938, the United States Navy had developed the Torpedo Data Computer, an electromechanical analog computer for submarines that used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II, similar devices were developed in other countries. Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939 in Berlin, was one of the earliest examples of an electromechanical relay computer. In 1941, Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer. The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. Program code was supplied on punched film while data could be stored in 64 words of memory or supplied from the keyboard. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating-point numbers. Rather than the harder-to-implement decimal system (used in Charles Babbage's earlier design), using a binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. The Z3 was not itself a universal computer but could be extended to be Turing complete. Zuse's next computer, the Z4, became the world's first commercial computer; after initial delay due to the Second World War, it was completed in 1950 and delivered to the ETH Zurich. The computer was manufactured by Zuse's own company, Zuse KG, which was founded in 1941 as the first company with the sole purpose of developing computers in Berlin. The Z4 served as the inspiration for the construction of the ERMETH, the first Swiss computer and one of the first in Europe. Purely electronic circuit elements soon replaced their mechanical and electromechanical equivalents, at the same time that digital calculation replaced analog. The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation five years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes. In the US, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed and tested the Atanasoff–Berry Computer (ABC) in 1942, the first "automatic electronic digital computer". This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotating drum for memory. During World War II, the British code-breakers at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes which were often run by women. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February. Colossus was the world's first electronic digital programmable computer. It used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Colossus Mark I contained 1,500 thermionic valves (tubes), but Mark II with 2,400 valves, was both five times faster and simpler to operate than Mark I, greatly speeding the decoding process. The ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the U.S. Although the ENIAC was similar to the Colossus, it was much faster, more flexible, and it was Turing-complete. Like the Colossus, a "program" on the ENIAC was defined by the states of its patch cables and switches, a far cry from the stored program electronic machines that came later. Once a program was written, it had to be mechanically set into the machine with manual resetting of plugs and switches. The programmers of the ENIAC were six women, often known collectively as the "ENIAC girls". It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors. The principle of the modern computer was proposed by Alan Turing in his seminal 1936 paper, On Computable Numbers. Turing proposed a simple device that he called "Universal Computing machine" and that is now known as a universal Turing machine. He proved that such a machine is capable of computing anything that is computable by executing instructions (program) stored on tape, allowing the machine to be programmable. The fundamental concept of Turing's design is the stored program, where all the instructions for computing are stored in memory. Von Neumann acknowledged that the central concept of the modern computer was due to this paper. Turing machines are to this day a central object of study in theory of computation. Except for the limitations imposed by their finite memory stores, modern computers are said to be Turing-complete, which is to say, they have algorithm execution capability equivalent to a universal Turing machine. Early computing machines had fixed programs. Changing its function required the re-wiring and re-structuring of the machine. With the proposal of the stored-program computer this changed. A stored-program computer includes by design an instruction set and can store in memory a set of instructions (a program) that details the computation. The theoretical basis for the stored-program computer was laid out by Alan Turing in his 1936 paper. In 1945, Turing joined the National Physical Laboratory and began work on developing an electronic stored-program digital computer. His 1945 report "Proposed Electronic Calculator" was the first specification for such a device. John von Neumann at the University of Pennsylvania also circulated his First Draft of a Report on the EDVAC in 1945. The Manchester Baby was the world's first stored-program computer. It was built at the University of Manchester in England by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948. It was designed as a testbed for the Williams tube, the first random-access digital storage device. Although the computer was described as "small and primitive" by a 1998 retrospective, it was the first working machine to contain all of the elements essential to a modern electronic computer. As soon as the Baby had demonstrated the feasibility of its design, a project began at the university to develop it into a practically useful computer, the Manchester Mark 1. The Mark 1 in turn quickly became the prototype for the Ferranti Mark 1, the world's first commercially available general-purpose computer. Built by Ferranti, it was delivered to the University of Manchester in February 1951. At least seven of these later machines were delivered between 1953 and 1957, one of them to Shell labs in Amsterdam. In October 1947 the directors of British catering company J. Lyons & Company decided to take an active role in promoting the commercial development of computers. Lyons's LEO I computer, modelled closely on the Cambridge EDSAC of 1949, became operational in April 1951 and ran the world's first routine office computer job. The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947, which was followed by Shockley's bipolar junction transistor in 1948. From 1955 onwards, transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers. Compared to vacuum tubes, transistors have many advantages: they are smaller, and require less power than vacuum tubes, so give off less heat. Junction transistors were much more reliable than vacuum tubes and had longer, indefinite, service life. Transistorized computers could contain tens of thousands of binary logic circuits in a relatively compact space. However, early junction transistors were relatively bulky devices that were difficult to manufacture on a mass-production basis, which limited them to a number of specialized applications. At the University of Manchester, a team under the leadership of Tom Kilburn designed and built a machine using the newly developed transistors instead of valves. Their first transistorized computer and the first in the world, was operational by 1953, and a second version was completed there in April 1955. However, the machine did make use of valves to generate its 125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer. That distinction goes to the Harwell CADET of 1955, built by the electronics division of the Atomic Energy Research Establishment at Harwell. The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented at Bell Labs between 1955 and 1960 and was the first truly compact transistor that could be miniaturized and mass-produced for a wide range of uses. With its high scalability, and much lower power consumption and higher density than bipolar junction transistors, the MOSFET made it possible to build high-density integrated circuits. In addition to data processing, it also enabled the practical use of MOS transistors as memory cell storage elements, leading to the development of MOS semiconductor memory, which replaced earlier magnetic-core memory in computers. The MOSFET led to the microcomputer revolution, and became the driving force behind the computer revolution. The MOSFET is the most widely used transistor in computers, and is the fundamental building block of digital electronics. The next great advance in computing power came with the advent of the integrated circuit (IC). The idea of the integrated circuit was first conceived by a radar scientist working for the Royal Radar Establishment of the Ministry of Defence, Geoffrey W.A. Dummer. Dummer presented the first public description of an integrated circuit at the Symposium on Progress in Quality Electronic Components in Washington, D.C., on 7 May 1952. The first working ICs were invented by Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958. In his patent application of 6 February 1959, Kilby described his new device as "a body of semiconductor material ... wherein all the components of the electronic circuit are completely integrated". However, Kilby's invention was a hybrid integrated circuit (hybrid IC), rather than a monolithic integrated circuit (IC) chip. Kilby's IC had external wire connections, which made it difficult to mass-produce. Noyce also came up with his own idea of an integrated circuit half a year later than Kilby. Noyce's invention was the first true monolithic IC chip. His chip solved many practical problems that Kilby's had not. Produced at Fairchild Semiconductor, it was made of silicon, whereas Kilby's chip was made of germanium. Noyce's monolithic IC was fabricated using the planar process, developed by his colleague Jean Hoerni in early 1959. In turn, the planar process was based on Carl Frosch and Lincoln Derick work on semiconductor surface passivation by silicon dioxide. Modern monolithic ICs are predominantly MOS (metal–oxide–semiconductor) integrated circuits, built from MOSFETs (MOS transistors). The earliest experimental MOS IC to be fabricated was a 16-transistor chip built by Fred Heiman and Steven Hofstein at RCA in 1962. General Microelectronics later introduced the first commercial MOS IC in 1964, developed by Robert Norman. Following the development of the self-aligned gate (silicon-gate) MOS transistor by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967, the first silicon-gate MOS IC with self-aligned gates was developed by Federico Faggin at Fairchild Semiconductor in 1968. The MOSFET has since become the most critical device component in modern ICs. The development of the MOS integrated circuit led to the invention of the microprocessor, and heralded an explosion in the commercial and personal use of computers. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Federico Faggin with his silicon-gate MOS IC technology, along with Ted Hoff, Masatoshi Shima and Stanley Mazor at Intel.[b] In the early 1970s, MOS IC technology enabled the integration of more than 10,000 transistors on a single chip. System on a Chip (SoCs) are complete computers on a microchip (or chip) the size of a coin. They may or may not have integrated RAM and flash memory. If not integrated, the RAM is usually placed directly above (known as Package on package) or below (on the opposite side of the circuit board) the SoC, and the flash memory is usually placed right next to the SoC. This is done to improve data transfer speeds, as the data signals do not have to travel long distances. Since ENIAC in 1945, computers have advanced enormously, with modern SoCs (such as the Snapdragon 865) being the size of a coin while also being hundreds of thousands of times more powerful than ENIAC, integrating billions of transistors, and consuming only a few watts of power. The first mobile computers were heavy and ran from mains power. The 50 lb (23 kg) IBM 5100 was an early example. Later portables such as the Osborne 1 and Compaq Portable were considerably lighter but still needed to be plugged in. The first laptops, such as the Grid Compass, removed this requirement by incorporating batteries – and with the continued miniaturization of computing resources and advancements in portable battery life, portable computers grew in popularity in the 2000s. The same developments allowed manufacturers to integrate computing resources into cellular mobile phones by the early 2000s. These smartphones and tablets run on a variety of operating systems and recently became the dominant computing device on the market. These are powered by System on a Chip (SoCs), which are complete computers on a microchip the size of a coin. Types Computers can be classified in a number of different ways, including: A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" is synonymous with a personal electronic computer,[c] a typical modern definition of a computer is: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information." According to this definition, any device that processes information qualifies as a computer. Hardware The term hardware covers all of those parts of a computer that are tangible physical objects. Circuits, computer chips, graphic cards, sound cards, memory (RAM), motherboard, displays, power supplies, cables, keyboards, printers and "mice" input devices are all hardware. A general-purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires. Inside each of these parts are thousands to trillions of small electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a "1", and when off it represents a "0" (in positive logic representation). The circuits are arranged in logic gates so that one or more of the circuits may control the state of one or more of the other circuits. Input devices are the means by which the operations of a computer are controlled and it is provided with data. Examples include: Output devices are the means by which a computer provides the results of its calculations in a human-accessible form. Examples include: The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into control signals that activate other parts of the computer.[e] Control systems in advanced computers may change the order of execution of some instructions to improve performance. A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.[f] The control system's function is as follows— this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU: Since the program counter is (conceptually) just another set of memory cells, it can be changed by calculations done in the ALU. Adding 100 to the program counter would cause the next instruction to be read from a place 100 locations further down the program. Instructions that modify the program counter are often known as "jumps" and allow for loops (instructions that are repeated by the computer) and often conditional instruction execution (both examples of control flow). The sequence of operations that the control unit goes through to process an instruction is in itself like a short computer program, and indeed, in some more complex CPU designs, there is another yet smaller computer called a microsequencer, which runs a microcode program that causes all of these events to happen. The control unit, ALU, and registers are collectively known as a central processing unit (CPU). Early CPUs were composed of many separate components. Since the 1970s, CPUs have typically been constructed on a single MOS integrated circuit chip called a microprocessor. The ALU is capable of performing two classes of operations: arithmetic and logic. The set of arithmetic operations that a particular ALU supports may be limited to addition and subtraction, or might include multiplication, division, trigonometry functions such as sine, cosine, etc., and square roots. Some can operate only on whole numbers (integers) while others use floating point to represent real numbers, albeit with limited precision. However, any computer that is capable of performing just the simplest operations can be programmed to break down the more complex operations into simple steps that it can perform. Therefore, any computer can be programmed to perform any arithmetic operation—although it will take more time to do so if its ALU does not directly support the operation. An ALU may also compare numbers and return Boolean truth values (true or false) depending on whether one is equal to, greater than or less than the other ("is 64 greater than 65?"). Logic operations involve Boolean logic: AND, OR, XOR, and NOT. These can be useful for creating complicated conditional statements and processing Boolean logic. Superscalar computers may contain multiple ALUs, allowing them to process several instructions simultaneously. Graphics processors and computers with SIMD and MIMD features often contain ALUs that can perform arithmetic on vectors and matrices. A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered "address" and can store a single number. The computer can be instructed to "put the number 123 into the cell numbered 1357" or to "add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595." The information stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers. In almost all modern computers, each memory cell is set up to store binary numbers in groups of eight bits (called a byte). Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or −128 to +127. To store larger numbers, several consecutive bytes may be used (typically, two, four or eight). When negative numbers are required, they are usually stored in two's complement notation. Other arrangements are possible, but are usually not seen outside of specialized applications or historical contexts. A computer can store any kind of information in memory if it can be represented numerically. Modern computers have billions or even trillions of bytes of memory. The CPU contains a special set of memory cells called registers that can be read and written to much more rapidly than the main memory area. There are typically between two and one hundred registers depending on the type of CPU. Registers are used for the most frequently needed data items to avoid having to access main memory every time data is needed. As data is constantly being worked on, reducing the need to access main memory (which is often slow compared to the ALU and control units) greatly increases the computer's speed. Computer main memory comes in two principal varieties: RAM can be read and written to anytime the CPU commands it, but ROM is preloaded with data and software that never changes, therefore the CPU can only read from it. ROM is typically used to store the computer's initial start-up instructions. In general, the contents of RAM are erased when the power to the computer is turned off, but ROM retains its data indefinitely. In a PC, the ROM contains a specialized program called the BIOS that orchestrates loading the computer's operating system from the hard disk drive into RAM whenever the computer is turned on or reset. In embedded computers, which frequently do not have disk drives, all of the required software may be stored in ROM. Software stored in ROM is often called firmware, because it is notionally more like hardware than software. Flash memory blurs the distinction between ROM and RAM, as it retains its data when turned off but is also rewritable. It is typically much slower than conventional ROM and RAM however, so its use is restricted to applications where high speed is unnecessary.[g] In more sophisticated computers there may be one or more RAM cache memories, which are slower than registers but faster than main memory. Generally computers with this sort of cache are designed to move frequently needed data into the cache automatically, often without the need for any intervention on the programmer's part. I/O is the means by which a computer exchanges information with the outside world. Devices that provide input or output to the computer are called peripherals. On a typical personal computer, peripherals include input devices like the keyboard and mouse, and output devices such as the display and printer. Hard disk drives, floppy disk drives and optical disc drives serve as both input and output devices. Computer networking is another form of I/O. I/O devices are often complex computers in their own right, with their own CPU and memory. A graphics processing unit might contain fifty or more tiny computers that perform the calculations necessary to display 3D graphics.[citation needed] Modern desktop computers contain many smaller computers that assist the main CPU in performing I/O. A 2016-era flat screen display contains its own computer circuitry. While a computer may be viewed as running one gigantic program stored in its main memory, in some systems it is necessary to give the appearance of running several programs simultaneously. This is achieved by multitasking, i.e. having the computer switch rapidly between running each program in turn. One means by which this is done is with a special signal called an interrupt, which can periodically cause the computer to stop executing instructions where it was and do something else instead. By remembering where it was executing prior to the interrupt, the computer can return to that task later. If several programs are running "at the same time". Then the interrupt generator might be causing several hundred interrupts per second, causing a program switch each time. Since modern computers typically execute instructions several orders of magnitude faster than human perception, it may appear that many programs are running at the same time, even though only one is ever executing in any given instant. This method of multitasking is sometimes termed "time-sharing" since each program is allocated a "slice" of time in turn. Before the era of inexpensive computers, the principal use for multitasking was to allow many people to share the same computer. Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly, in direct proportion to the number of programs it is running, but most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run simultaneously without unacceptable speed loss. Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed in only large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result. Supercomputers in particular often have highly unique architectures that differ significantly from the basic stored-program architecture and from general-purpose computers.[h] They often feature thousands of CPUs, customized high-speed interconnects, and specialized computing hardware. Such designs tend to be useful for only specialized tasks due to the large scale of program organization required to use most of the available resources at once. Supercomputers usually see usage in large-scale simulation, graphics rendering, and cryptography applications, as well as with other so-called "embarrassingly parallel" tasks. Software Software is the part of a computer system that consists of the encoded information that determines the computer's operation, such as data or instructions on how to process the data. In contrast to the physical hardware from which the system is built, software is immaterial. Software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. It is often divided into system software and application software. Computer hardware and software require each other and neither is useful on its own. When software is stored in hardware that cannot easily be modified, such as with BIOS ROM in an IBM PC compatible computer, it is sometimes called "firmware". The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write, and due to the complexity of the task almost certainly contain errors. This section applies to most common RAM machine–based computers. In most cases, computer instructions are simple: add one number to another, move some data from one location to another, send a message to some external device, etc. These instructions are read from the computer's memory and are generally carried out (executed) in the order they were given. However, there are usually specialized instructions to tell the computer to jump ahead or backwards to some other place in the program and to carry on executing from there. These are called "jump" instructions (or branches). Furthermore, jump instructions may be made to happen conditionally so that different sequences of instructions may be used depending on the result of some previous calculation or some external event. Many computers directly support subroutines by providing a type of jump that "remembers" the location it jumped from and another instruction to return to the instruction following that jump instruction. Program execution might be likened to reading a book. While a person will normally read each word and line in sequence, they may at times jump back to an earlier place in the text or skip sections that are not of interest. Similarly, a computer may sometimes go back and repeat the instructions in some section of the program over and over again until some internal condition is met. This is called the flow of control within the program and it is what allows the computer to perform tasks repeatedly without human intervention. Comparatively, a person using a pocket calculator can perform a basic arithmetic operation such as adding two numbers with just a few button presses. But to add together all of the numbers from 1 to 1,000 would take thousands of button presses and a lot of time, with a near certainty of making a mistake. On the other hand, a computer may be programmed to do this with just a few simple instructions. The following example is written in the MIPS assembly language: Once told to run this program, the computer will perform the repetitive addition task without further human intervention. It will almost never make a mistake and a modern PC can complete the task in a fraction of a second. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode; the command to multiply them would have a different opcode, and so on. The simplest computers are able to perform any of a handful of different instructions; the more complex computers have several hundred to choose from, each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of these instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer in the same way as numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on. This is called the Harvard architecture after the Harvard Mark I computer. Modern von Neumann computers display some traits of the Harvard architecture in their designs, such as in CPU caches. While it is possible to write computer programs as long lists of numbers (machine language) and while this technique was used with many early computers,[i] it is extremely tedious and potentially error-prone to do so in practice, especially for complicated programs. Instead, each basic instruction can be given a short name that is indicative of its function and easy to remember – a mnemonic such as ADD, SUB, MULT or JUMP. These mnemonics are collectively known as a computer's assembly language. Converting programs written in assembly language into something the computer can actually understand (machine language) is usually done by a computer program called an assembler. A programming language is a notation system for writing the source code from which a computer program is produced. Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques. There are thousands of programming languages—some intended for general purpose programming, others useful for only highly specialized applications. Machine languages and the assembly languages that represent them (collectively termed low-level programming languages) are generally unique to the particular architecture of a computer's central processing unit (CPU). For instance, an ARM architecture CPU (such as may be found in a smartphone or a hand-held videogame) cannot understand the machine language of an x86 CPU that might be in a PC.[j] Historically a significant number of other CPU architectures were created and saw extensive use, notably including the MOS Technology 6502 and 6510 in addition to the Zilog Z80. Although considerably easier than in machine language, writing long programs in assembly language is often difficult and is also error prone. Therefore, most practical programs are written in more abstract high-level programming languages that are able to express the needs of the programmer more conveniently (and thereby help reduce programmer error). High level languages are usually "compiled" into machine language (or sometimes into assembly language and then into machine language) using another computer program called a compiler.[k] High level languages are less related to the workings of the target computer than assembly language, and more related to the language and structure of the problem(s) to be solved by the final program. It is therefore often possible to use different compilers to translate the same high level language program into the machine language of many different types of computer. This is part of the means by which software like video games may be made available for different computer architectures such as personal computers and various video game consoles. Program design of small programs is relatively simple and involves the analysis of the problem, collection of inputs, using the programming constructs within languages, devising or using established procedures and algorithms, providing data for output devices and solutions to the problem as applicable. As problems become larger and more complex, features such as subprograms, modules, formal documentation, and new paradigms such as object-oriented programming are encountered. Large programs involving thousands of line of code and more require formal software methodologies. The task of developing large software systems presents a significant intellectual challenge. Producing software with an acceptably high reliability within a predictable schedule and budget has historically been difficult; the academic and professional discipline of software engineering concentrates specifically on this challenge. Errors in computer programs are called "bugs". They may be benign and not affect the usefulness of the program, or have only subtle effects. However, in some cases they may cause the program or the entire system to "hang", becoming unresponsive to input such as mouse clicks or keystrokes, to completely fail, or to crash. Otherwise benign bugs may sometimes be harnessed for malicious intent by an unscrupulous user writing an exploit, code designed to take advantage of a bug and disrupt a computer's proper execution. Bugs are usually not the fault of the computer. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design.[l] Admiral Grace Hopper, an American computer scientist and developer of the first compiler, is credited for having first used the term "bugs" in computing after a dead moth was found shorting a relay in the Harvard Mark II computer in September 1947. Networking and the Internet Computers have been used to coordinate information between multiple physical locations since the 1950s. The U.S. military's SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems such as Sabre. In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. The effort was funded by ARPA (now DARPA), and the computer network that resulted was called the ARPANET. Logic gates are a common abstraction which can apply to most of the above digital or analog paradigms. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a minimum capability (being Turing-complete) is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, any type of computer (netbook, supercomputer, cellular automaton, etc.) is able to perform the same computational tasks, given enough time and storage capacity. In the 20th century, artificial intelligence systems were predominantly symbolic: they executed code that was explicitly programmed by software developers. Machine learning models, however, have a set parameters that are adjusted throughout training, so that the model learns to accomplish a task based on the provided data. The efficiency of machine learning (and in particular of neural networks) has rapidly improved with progress in hardware for parallel computing, mainly graphics processing units (GPUs). Some large language models are able to control computers or robots. AI progress may lead to the creation of artificial general intelligence (AGI), a type of AI that could accomplish virtually any intellectual task at least as well as humans. Professions and organizations As the use of computers has spread throughout society, there are an increasing number of careers involving computers. The need for computers to work well together and to be able to exchange information has spawned the need for many standards organizations, clubs and societies of both a formal and informal nature. See also Notes References Sources External links
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[SOURCE: https://en.wikipedia.org/wiki/Meetup] \| [TOKENS: 847]
Contents Meetup Meetup is an American social media platform and social networking service for hosting and organizing in-person and virtual activities, gatherings, and events for people and communities of similar interests, hobbies, and professions. The service has 60 million users. The company has both free tiers and paid tiers. Headquartered in New York City, the company was founded in 2002 by Scott Heiferman and four others. It was acquired by WeWork in November 2017, AlleyCorp in March 2020, and Bending Spoons in January 2024. History Meetup was founded in June 2002 by Scott Heiferman and four co-founders. The idea for Meetup came from Heiferman meeting his neighbors in New York City for the first time after the September 11 attacks. Heiferman was also influenced by the book Bowling Alone, which is about the deterioration of community in American culture. Some initial funding for the venture was raised from friends and family, which was followed by a funding round with angel investors. The early version of Meetup generated revenues by charging a fee to venues in exchange for bringing Meetup users to their business. Once enough users added themselves to a group, Meetup sent the group members an email, asking them to vote on one of three sponsoring venues for the group to meet. In 2003, Meetup won the "Community Websites and Mobile Site" Webby Award. Meetup was originally intended to focus on hobbies and interests, but it was popularized by Presidential hopeful Howard Dean in 2004. Meetup developed paid services to help the Dean campaign to meet with Meetup users. Dean also publicized Meetup groups of supporters in his speeches and on his website; at the peak of Dean's campaign, 143,000 users had joined Meetup groups for Dean supporters. In early 2005, Meetup began to charge a fee for group organizers. Initially, changes to the website had to be approved by two committees. In 2008, Union Square Ventures invested in the company. In 2009, Meetup started running hackathons, where employees came up with new features that would be implemented if their coworkers supported it. In July 2009, the company was profitable and had $9 million in annualized revenues. Meetup had 8 million users in 2010. The website was redesigned in September 2013. Meetup had 25.5 million users by 2013. In October 2013, Meetup acquired Dispatch, a struggling email collaboration company. In March 2014, a hacker shut down Meetup with a DDoS attack, the hacker claimed to be funded by a competitor. The hackers asked for a ransom of $300. In February 2017, Meetup created 1,000 #resist Meetup groups with the intention of coordinating protests in response to the Trump travel ban. This caused some supporters of Donald Trump to leave the site or call for a boycott. Meetup also partnered with a labor group to organize anti-Trump protests. Meetup was acquired by WeWork in November 2017 for about $156 million. By that time, Meetup had raised $18.3 million over 11 years. Some former employees said there was a 10% layoff after the acquisition. In 2018, Scott Heiferman resigned as CEO and former Investopedia CEO David Siegel took his place after a convincing interview with WeWork CEO Adam Neumann. Heiferman became Chairman of the company. In October 2019, Meetup began to test a different pricing model in two US states, reducing the costs that must be paid by organizers of $23.99/month or $98.94/six months, but requiring users to pay a $2 fee in order to RSVP for events, leaving several users angry. In March 2020, WeWork sold Meetup to AlleyCorp and other investors, reportedly at a substantial loss, and Kevin P. Ryan of AlleyCorp was added to the board of directors of Meetup. In January 2024, Bending Spoons acquired Meetup. See also References External links
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[SOURCE: https://www.mako.co.il/special-roim_rachok_keshet] \| [TOKENS: 85]
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[SOURCE: https://www.wired.com/story/elon-musk-x-premium-accounts-iran/] \| [TOKENS: 3890]
David GilbertPoliticsFeb 12, 2026 9:27 AMElon Musk’s X Appears to Be Violating US Sanctions by Selling Premium Accounts to Iranian LeadersWhile publicly supporting protesters in Iran, Elon Musk’s X appears to have been selling premium accounts to regime officials. Check marks were removed from certain accounts after a WIRED inquiry.Photograph: BRENDAN SMIALOWSKI/Getty ImagesSave StorySave this storySave StorySave this storyIn recent weeks, Elon Musk has followed president Donald Trump’s lead, slamming Iranian government officials and supporting the thousands of protesters railing against the regime. He even provided free access to his Starlink satellites in the midst of a nationwide internet blackout.But while publicly proclaiming his support of the protesters, Musk’s company X appears to be profiting from the very same government officials he railed against, potentially violating US sanctions in the process, according to a new report from the Tech Transparency Project (TTP) shared exclusively with WIRED.TTP identified more than two dozen X accounts allegedly run by Iranian government officials, state agencies, and state-run news outlets, which display a blue check mark, indicating they have access to X’s premium service. These accounts were sharing state-sponsored propaganda at a time when ordinary Iranians had no access to the internet, and their messages appeared to be artificially boosted to increase reach and engagement, which is a key aspect of X’s premium service. An X Premium subscription, which is the only way to receive a blue check mark, costs $8 a month, while a Premium+ subscription, which removes ads and boosts reach even further, costs $40 a month.At a time when the Trump administration is threatening Iran with possible military action if it does not meet demands related to nuclear enrichment and ballistic missiles, X appears to be undermining those efforts by providing a social media bullhorn for the Iranian government to spread its message.“The fact that Elon Musk is not just platforming these individuals, but taking their money to boost their content through these premium subscriptions and give them extra features also means he's undermining the sanctions that the US and the Trump administration are actually applying,” Katie Paul, the director of the TTP, tells WIRED.X did not respond to a request for comment, but within hours of WIRED flagging several X accounts belonging to Iranian officials, their blue check marks were removed. The rest of the accounts identified by TTP but not shared with X continue to display a blue check mark.The White House directed WIRED to the Treasury when asked for comment. A Treasury spokesperson said they do not comment on specific allegations but that it “take[s] allegations of sanctionable conduct extremely seriously.”Protests broke out in the Iranian capital of Tehran on December 28 over the continuing devaluation of the Iranian rial against the dollar and a widespread economic crisis in the country. Over the following days, tens of thousands of protesters poured onto the streets in cities across the country, calling for regime change and the end of Supreme Leader Ayatollah Ali Khamenei’s 37-year reign.In response, the regime brutally cracked down on protesters, arresting tens of thousands of people and killing thousands more. The true death toll is still unknown but could be much higher than currently reported.Trump signaled his support for the protesters in a post on Truth Social on January 2, promising to come to their rescue. “We are locked and loaded and ready to go," he wrote. Musk quickly followed Trump, calling Khamenei “delusional.”On January 5, Gholamhossein Mohseni-Ejei, the head of Iran’s judiciary, who had a blue check mark at the time, wrote in a post on X, “This time, we will show no mercy to the rioters.” Ejei was among the accounts whose blue check marks were removed on Wednesday after WIRED contacted the company.A few days later, X changed the Iranian flag emoji on the platform to one used before the 1979 revolution, featuring a lion and sun. On January 14, Musk announced that anyone with a Starlink device would be free to access the internet in Iran without a subscription. At the time, Starlink devices were the only viable way of getting online after the government imposed a near-total internet blackout.But during all of this public signaling of his opposition to the Iranian regime, dozens of accounts on X continued to share unchecked propaganda on the platform.Among the government officials identified by TTP is Ali Larijani, a senior aide to Iran’s supreme leader, whose X account has over 120,000 followers. He had a blue check mark until Wednesday when X appeared to remove it after WIRED reached out for comment. When Trump called on Iranians to continue protesting, Larijani wrote on X that Trump is one of the “main killers of the people of Iran.” Larijani was sanctioned by the US last month; the Treasury department called him one of the “architects of Iran’s brutal crackdown on peaceful protests.”Ali Akbar Velayati, a member of the Supreme Leader’s inner circle and a former foreign minister, also had a blue check mark on his account until Wednesday. Velayati was sanctioned by the Treasury in 2019 for providing a “lifeline” to the regime of former Syrian dictator Bashar al-Assad. Velayati was also charged by Argentinian authorities with homicide over the 1994 bombing of a Jewish community center in Buenos Aires that left 85 people dead. On December 30, referencing Trump, Velayati wrote on his X account that “without the need for any kind of foreign assistance, [Iran] will continue the peaceful advancement of its nuclear industry and its legitimate defensive capabilities.”X has a system for identifying heads of state and government officials, applying a gray check mark to accounts that have been verified. Indeed Khamenei, who has millions of followers across multiple X accounts, has a gray check mark next to several of his accounts. Despite this system being available, many Iranian government officials have a blue check mark on their profiles, which would indicate that they are paying for X’s premium service.X’s website states that a “blue check mark means that the account has an active subscription to X Premium and meets our eligibility requirements.” Those eligibility requirements include a verified phone number.Prior to Musk taking control of X in 2022, the platform then known as Twitter gave blue check marks to notable accounts who verified their identity. However, X began winding down that system in 2023 and, according to the company, those accounts “will not retain a blue check mark unless they are subscribed to X Premium.”Like many of the accounts identified by TTP, Ejei, Larijani, and Velayati are all listed as “specially designated nationals” by the Treasury department’s Office of Foreign Assets Control (OFAC), which has been enforcing sanctions against Iran for decades.There are exemptions to the sanctions against the Iranian government, and one, issued in 2022, allows for US tech companies to provide access to their platforms in Iran. This is to allow ordinary citizens to share information with the outside world. The exemption means Iranian government officials can also use these platforms, but only if those services are “publicly available” and “at no cost.”“It is not possible to know if there was a violation without knowing the specific details of the arrangement between X and the various sanctioned users,” Oliver Krischik, a lawyer at GKG Law who focuses on OFAC sanctions, tells WIRED. “However, if X provided these ‘blue check marks’ to the Iranian government for a fee or provided services to the Iranian government not available to the public at no extra cost without a license, then that would appear to fall outside the authorization.”Another blue check mark account identified by TTP belongs to Ali Ahmadnia, who is the communications chief for Iran’s president. Ahmadnia’s account featured a link where people could send him money using bitcoin.“Such a feature would not be covered by any of the otherwise potentially available informational materials exemption or general licenses with respect to services incident to communications,” Kian Meshkat, an attorney specializing in US economic sanctions, tells WIRED. “It could arguably amount to a prohibited dealing in the blocked property of the Government of Iran, as well as a prohibited export of financial services to Iran under the Iranian Transactions and Sanctions Regulations.”At the time of publication, the button appears to have been removed from Ahmadnia’s account on desktop but remains visible on the X app."This is part of a bigger issue we've seen with X where they are directly profiting through premium subscriptions, through sanctioned entities and individuals,” Paul says. “When we look at the mass layoffs X underwent after Elon Musk took over, what we see is the deterioration of not just trust and safety and moderation, but actually legal compliance for things like US sanctions.”This is not the first time Musk has been accused of violating US sanctions by providing premium services to prohibited individuals. In June, Massachusetts senator Elizabeth Warren wrote to the Treasury following the publication of another report by TTP that claimed X was providing blue check marks to US-sanctioned terrorists.“Now it looks like X may be letting sanctioned Iranian government officials make money off its platform,” Warren tells WIRED. “By failing to take basic steps to enforce our sanctions, the Trump Administration continues to undermine our national security and the integrity of the financial system.” Elon Musk’s X Appears to Be Violating US Sanctions by Selling Premium Accounts to Iranian Leaders In recent weeks, Elon Musk has followed president Donald Trump’s lead, slamming Iranian government officials and supporting the thousands of protesters railing against the regime. He even provided free access to his Starlink satellites in the midst of a nationwide internet blackout. But while publicly proclaiming his support of the protesters, Musk’s company X appears to be profiting from the very same government officials he railed against, potentially violating US sanctions in the process, according to a new report from the Tech Transparency Project (TTP) shared exclusively with WIRED. TTP identified more than two dozen X accounts allegedly run by Iranian government officials, state agencies, and state-run news outlets, which display a blue check mark, indicating they have access to X’s premium service. These accounts were sharing state-sponsored propaganda at a time when ordinary Iranians had no access to the internet, and their messages appeared to be artificially boosted to increase reach and engagement, which is a key aspect of X’s premium service. An X Premium subscription, which is the only way to receive a blue check mark, costs $8 a month, while a Premium+ subscription, which removes ads and boosts reach even further, costs $40 a month. At a time when the Trump administration is threatening Iran with possible military action if it does not meet demands related to nuclear enrichment and ballistic missiles, X appears to be undermining those efforts by providing a social media bullhorn for the Iranian government to spread its message. “The fact that Elon Musk is not just platforming these individuals, but taking their money to boost their content through these premium subscriptions and give them extra features also means he's undermining the sanctions that the US and the Trump administration are actually applying,” Katie Paul, the director of the TTP, tells WIRED. X did not respond to a request for comment, but within hours of WIRED flagging several X accounts belonging to Iranian officials, their blue check marks were removed. The rest of the accounts identified by TTP but not shared with X continue to display a blue check mark. The White House directed WIRED to the Treasury when asked for comment. A Treasury spokesperson said they do not comment on specific allegations but that it “take[s] allegations of sanctionable conduct extremely seriously.” Protests broke out in the Iranian capital of Tehran on December 28 over the continuing devaluation of the Iranian rial against the dollar and a widespread economic crisis in the country. Over the following days, tens of thousands of protesters poured onto the streets in cities across the country, calling for regime change and the end of Supreme Leader Ayatollah Ali Khamenei’s 37-year reign. In response, the regime brutally cracked down on protesters, arresting tens of thousands of people and killing thousands more. The true death toll is still unknown but could be much higher than currently reported. Trump signaled his support for the protesters in a post on Truth Social on January 2, promising to come to their rescue. “We are locked and loaded and ready to go," he wrote. Musk quickly followed Trump, calling Khamenei “delusional.” On January 5, Gholamhossein Mohseni-Ejei, the head of Iran’s judiciary, who had a blue check mark at the time, wrote in a post on X, “This time, we will show no mercy to the rioters.” Ejei was among the accounts whose blue check marks were removed on Wednesday after WIRED contacted the company. A few days later, X changed the Iranian flag emoji on the platform to one used before the 1979 revolution, featuring a lion and sun. On January 14, Musk announced that anyone with a Starlink device would be free to access the internet in Iran without a subscription. At the time, Starlink devices were the only viable way of getting online after the government imposed a near-total internet blackout. But during all of this public signaling of his opposition to the Iranian regime, dozens of accounts on X continued to share unchecked propaganda on the platform. Among the government officials identified by TTP is Ali Larijani, a senior aide to Iran’s supreme leader, whose X account has over 120,000 followers. He had a blue check mark until Wednesday when X appeared to remove it after WIRED reached out for comment. When Trump called on Iranians to continue protesting, Larijani wrote on X that Trump is one of the “main killers of the people of Iran.” Larijani was sanctioned by the US last month; the Treasury department called him one of the “architects of Iran’s brutal crackdown on peaceful protests.” Ali Akbar Velayati, a member of the Supreme Leader’s inner circle and a former foreign minister, also had a blue check mark on his account until Wednesday. Velayati was sanctioned by the Treasury in 2019 for providing a “lifeline” to the regime of former Syrian dictator Bashar al-Assad. Velayati was also charged by Argentinian authorities with homicide over the 1994 bombing of a Jewish community center in Buenos Aires that left 85 people dead. On December 30, referencing Trump, Velayati wrote on his X account that “without the need for any kind of foreign assistance, [Iran] will continue the peaceful advancement of its nuclear industry and its legitimate defensive capabilities.” X has a system for identifying heads of state and government officials, applying a gray check mark to accounts that have been verified. Indeed Khamenei, who has millions of followers across multiple X accounts, has a gray check mark next to several of his accounts. Despite this system being available, many Iranian government officials have a blue check mark on their profiles, which would indicate that they are paying for X’s premium service. X’s website states that a “blue check mark means that the account has an active subscription to X Premium and meets our eligibility requirements.” Those eligibility requirements include a verified phone number. Prior to Musk taking control of X in 2022, the platform then known as Twitter gave blue check marks to notable accounts who verified their identity. However, X began winding down that system in 2023 and, according to the company, those accounts “will not retain a blue check mark unless they are subscribed to X Premium.” Like many of the accounts identified by TTP, Ejei, Larijani, and Velayati are all listed as “specially designated nationals” by the Treasury department’s Office of Foreign Assets Control (OFAC), which has been enforcing sanctions against Iran for decades. There are exemptions to the sanctions against the Iranian government, and one, issued in 2022, allows for US tech companies to provide access to their platforms in Iran. This is to allow ordinary citizens to share information with the outside world. The exemption means Iranian government officials can also use these platforms, but only if those services are “publicly available” and “at no cost.” “It is not possible to know if there was a violation without knowing the specific details of the arrangement between X and the various sanctioned users,” Oliver Krischik, a lawyer at GKG Law who focuses on OFAC sanctions, tells WIRED. “However, if X provided these ‘blue check marks’ to the Iranian government for a fee or provided services to the Iranian government not available to the public at no extra cost without a license, then that would appear to fall outside the authorization.” Another blue check mark account identified by TTP belongs to Ali Ahmadnia, who is the communications chief for Iran’s president. Ahmadnia’s account featured a link where people could send him money using bitcoin. “Such a feature would not be covered by any of the otherwise potentially available informational materials exemption or general licenses with respect to services incident to communications,” Kian Meshkat, an attorney specializing in US economic sanctions, tells WIRED. “It could arguably amount to a prohibited dealing in the blocked property of the Government of Iran, as well as a prohibited export of financial services to Iran under the Iranian Transactions and Sanctions Regulations.” At the time of publication, the button appears to have been removed from Ahmadnia’s account on desktop but remains visible on the X app. "This is part of a bigger issue we've seen with X where they are directly profiting through premium subscriptions, through sanctioned entities and individuals,” Paul says. “When we look at the mass layoffs X underwent after Elon Musk took over, what we see is the deterioration of not just trust and safety and moderation, but actually legal compliance for things like US sanctions.” This is not the first time Musk has been accused of violating US sanctions by providing premium services to prohibited individuals. In June, Massachusetts senator Elizabeth Warren wrote to the Treasury following the publication of another report by TTP that claimed X was providing blue check marks to US-sanctioned terrorists. “Now it looks like X may be letting sanctioned Iranian government officials make money off its platform,” Warren tells WIRED. “By failing to take basic steps to enforce our sanctions, the Trump Administration continues to undermine our national security and the integrity of the financial system.” You Might Also Like In your inbox: Upgrade your life with WIRED-tested gear A wave of unexplained bot traffic is sweeping the web Big Story: The women training for pregnancy like it’s a marathon Iran’s digital surveillance machine is almost complete Listen: Silicon Valley tech workers are trying to stop ICE © 2026 Condé Nast. All rights reserved. WIRED may earn a portion of sales from products that are purchased through our site as part of our Affiliate Partnerships with retailers. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Condé Nast. Ad Choices
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[SOURCE: https://en.wikipedia.org/wiki/PlayStation_(console)#cite_ref-FOOTNOTEPerry199551_155-0] \| [TOKENS: 10728]
Contents PlayStation (console) The PlayStation[a] (codenamed PSX, abbreviated as PS, and retroactively PS1 or PS one) is a home video game console developed and marketed by Sony Computer Entertainment. It was released in Japan on 3 December 1994, followed by North America on 9 September 1995, Europe on 29 September 1995, and other regions following thereafter. As a fifth-generation console, the PlayStation primarily competed with the Nintendo 64 and the Sega Saturn. Sony began developing the PlayStation after a failed venture with Nintendo to create a CD-ROM peripheral for the Super Nintendo Entertainment System in the early 1990s. The console was primarily designed by Ken Kutaragi and Sony Computer Entertainment in Japan, while additional development was outsourced in the United Kingdom. An emphasis on 3D polygon graphics was placed at the forefront of the console's design. PlayStation game production was designed to be streamlined and inclusive, enticing the support of many third party developers. The console proved popular for its extensive game library, popular franchises, low retail price, and aggressive youth marketing which advertised it as the preferable console for adolescents and adults. Critically acclaimed games that defined the console include Gran Turismo, Crash Bandicoot, Spyro the Dragon, Tomb Raider, Resident Evil, Metal Gear Solid, Tekken 3, and Final Fantasy VII. Sony ceased production of the PlayStation on 23 March 2006—over eleven years after it had been released, and in the same year the PlayStation 3 debuted. More than 4,000 PlayStation games were released, with cumulative sales of 962 million units. The PlayStation signaled Sony's rise to power in the video game industry. It received acclaim and sold strongly; in less than a decade, it became the first computer entertainment platform to ship over 100 million units. Its use of compact discs heralded the game industry's transition from cartridges. The PlayStation's success led to a line of successors, beginning with the PlayStation 2 in 2000. In the same year, Sony released a smaller and cheaper model, the PS one. History The PlayStation was conceived by Ken Kutaragi, a Sony executive who managed a hardware engineering division and was later dubbed "the Father of the PlayStation". Kutaragi's interest in working with video games stemmed from seeing his daughter play games on Nintendo's Famicom. Kutaragi convinced Nintendo to use his SPC-700 sound processor in the Super Nintendo Entertainment System (SNES) through a demonstration of the processor's capabilities. His willingness to work with Nintendo was derived from both his admiration of the Famicom and conviction in video game consoles becoming the main home-use entertainment systems. Although Kutaragi was nearly fired because he worked with Nintendo without Sony's knowledge, president Norio Ohga recognised the potential in Kutaragi's chip and decided to keep him as a protégé. The inception of the PlayStation dates back to a 1988 joint venture between Nintendo and Sony. Nintendo had produced floppy disk technology to complement cartridges in the form of the Family Computer Disk System, and wanted to continue this complementary storage strategy for the SNES. Since Sony was already contracted to produce the SPC-700 sound processor for the SNES, Nintendo contracted Sony to develop a CD-ROM add-on, tentatively titled the "Play Station" or "SNES-CD". The PlayStation name had already been trademarked by Yamaha, but Nobuyuki Idei liked it so much that he agreed to acquire it for an undisclosed sum rather than search for an alternative. Sony was keen to obtain a foothold in the rapidly expanding video game market. Having been the primary manufacturer of the MSX home computer format, Sony had wanted to use their experience in consumer electronics to produce their own video game hardware. Although the initial agreement between Nintendo and Sony was about producing a CD-ROM drive add-on, Sony had also planned to develop a SNES-compatible Sony-branded console. This iteration was intended to be more of a home entertainment system, playing both SNES cartridges and a new CD format named the "Super Disc", which Sony would design. Under the agreement, Sony would retain sole international rights to every Super Disc game, giving them a large degree of control despite Nintendo's leading position in the video game market. Furthermore, Sony would also be the sole benefactor of licensing related to music and film software that it had been aggressively pursuing as a secondary application. The Play Station was to be announced at the 1991 Consumer Electronics Show (CES) in Las Vegas. However, Nintendo president Hiroshi Yamauchi was wary of Sony's increasing leverage at this point and deemed the original 1988 contract unacceptable upon realising it essentially handed Sony control over all games written on the SNES CD-ROM format. Although Nintendo was dominant in the video game market, Sony possessed a superior research and development department. Wanting to protect Nintendo's existing licensing structure, Yamauchi cancelled all plans for the joint Nintendo–Sony SNES CD attachment without telling Sony. He sent Nintendo of America president Minoru Arakawa (his son-in-law) and chairman Howard Lincoln to Amsterdam to form a more favourable contract with Dutch conglomerate Philips, Sony's rival. This contract would give Nintendo total control over their licences on all Philips-produced machines. Kutaragi and Nobuyuki Idei, Sony's director of public relations at the time, learned of Nintendo's actions two days before the CES was due to begin. Kutaragi telephoned numerous contacts, including Philips, to no avail. On the first day of the CES, Sony announced their partnership with Nintendo and their new console, the Play Station. At 9 am on the next day, in what has been called "the greatest ever betrayal" in the industry, Howard Lincoln stepped onto the stage and revealed that Nintendo was now allied with Philips and would abandon their work with Sony. Incensed by Nintendo's renouncement, Ohga and Kutaragi decided that Sony would develop their own console. Nintendo's contract-breaking was met with consternation in the Japanese business community, as they had broken an "unwritten law" of native companies not turning against each other in favour of foreign ones. Sony's American branch considered allying with Sega to produce a CD-ROM-based machine called the Sega Multimedia Entertainment System, but the Sega board of directors in Tokyo vetoed the idea when Sega of America CEO Tom Kalinske presented them the proposal. Kalinske recalled them saying: "That's a stupid idea, Sony doesn't know how to make hardware. They don't know how to make software either. Why would we want to do this?" Sony halted their research, but decided to develop what it had developed with Nintendo and Sega into a console based on the SNES. Despite the tumultuous events at the 1991 CES, negotiations between Nintendo and Sony were still ongoing. A deal was proposed: the Play Station would still have a port for SNES games, on the condition that it would still use Kutaragi's audio chip and that Nintendo would own the rights and receive the bulk of the profits. Roughly two hundred prototype machines were created, and some software entered development. Many within Sony were still opposed to their involvement in the video game industry, with some resenting Kutaragi for jeopardising the company. Kutaragi remained adamant that Sony not retreat from the growing industry and that a deal with Nintendo would never work. Knowing that they had to take decisive action, Sony severed all ties with Nintendo on 4 May 1992. To determine the fate of the PlayStation project, Ohga chaired a meeting in June 1992, consisting of Kutaragi and several senior Sony board members. Kutaragi unveiled a proprietary CD-ROM-based system he had been secretly working on which played games with immersive 3D graphics. Kutaragi was confident that his LSI chip could accommodate one million logic gates, which exceeded the capabilities of Sony's semiconductor division at the time. Despite gaining Ohga's enthusiasm, there remained opposition from a majority present at the meeting. Older Sony executives also opposed it, who saw Nintendo and Sega as "toy" manufacturers. The opposers felt the game industry was too culturally offbeat and asserted that Sony should remain a central player in the audiovisual industry, where companies were familiar with one another and could conduct "civili[s]ed" business negotiations. After Kutaragi reminded him of the humiliation he suffered from Nintendo, Ohga retained the project and became one of Kutaragi's most staunch supporters. Ohga shifted Kutaragi and nine of his team from Sony's main headquarters to Sony Music Entertainment Japan (SMEJ), a subsidiary of the main Sony group, so as to retain the project and maintain relationships with Philips for the MMCD development project. The involvement of SMEJ proved crucial to the PlayStation's early development as the process of manufacturing games on CD-ROM format was similar to that used for audio CDs, with which Sony's music division had considerable experience. While at SMEJ, Kutaragi worked with Epic/Sony Records founder Shigeo Maruyama and Akira Sato; both later became vice-presidents of the division that ran the PlayStation business. Sony Computer Entertainment (SCE) was jointly established by Sony and SMEJ to handle the company's ventures into the video game industry. On 27 October 1993, Sony publicly announced that it was entering the game console market with the PlayStation. According to Maruyama, there was uncertainty over whether the console should primarily focus on 2D, sprite-based graphics or 3D polygon graphics. After Sony witnessed the success of Sega's Virtua Fighter (1993) in Japanese arcades, the direction of the PlayStation became "instantly clear" and 3D polygon graphics became the console's primary focus. SCE president Teruhisa Tokunaka expressed gratitude for Sega's timely release of Virtua Fighter as it proved "just at the right time" that making games with 3D imagery was possible. Maruyama claimed that Sony further wanted to emphasise the new console's ability to utilise redbook audio from the CD-ROM format in its games alongside high quality visuals and gameplay. Wishing to distance the project from the failed enterprise with Nintendo, Sony initially branded the PlayStation the "PlayStation X" (PSX). Sony formed their European division and North American division, known as Sony Computer Entertainment Europe (SCEE) and Sony Computer Entertainment America (SCEA), in January and May 1995. The divisions planned to market the new console under the alternative branding "PSX" following the negative feedback regarding "PlayStation" in focus group studies. Early advertising prior to the console's launch in North America referenced PSX, but the term was scrapped before launch. The console was not marketed with Sony's name in contrast to Nintendo's consoles. According to Phil Harrison, much of Sony's upper management feared that the Sony brand would be tarnished if associated with the console, which they considered a "toy". Since Sony had no experience in game development, it had to rely on the support of third-party game developers. This was in contrast to Sega and Nintendo, which had versatile and well-equipped in-house software divisions for their arcade games and could easily port successful games to their home consoles. Recent consoles like the Atari Jaguar and 3DO suffered low sales due to a lack of developer support, prompting Sony to redouble their efforts in gaining the endorsement of arcade-savvy developers. A team from Epic Sony visited more than a hundred companies throughout Japan in May 1993 in hopes of attracting game creators with the PlayStation's technological appeal. Sony found that many disliked Nintendo's practices, such as favouring their own games over others. Through a series of negotiations, Sony acquired initial support from Namco, Konami, and Williams Entertainment, as well as 250 other development teams in Japan alone. Namco in particular was interested in developing for PlayStation since Namco rivalled Sega in the arcade market. Attaining these companies secured influential games such as Ridge Racer (1993) and Mortal Kombat 3 (1995), Ridge Racer being one of the most popular arcade games at the time, and it was already confirmed behind closed doors that it would be the PlayStation's first game by December 1993, despite Namco being a longstanding Nintendo developer. Namco's research managing director Shegeichi Nakamura met with Kutaragi in 1993 to discuss the preliminary PlayStation specifications, with Namco subsequently basing the Namco System 11 arcade board on PlayStation hardware and developing Tekken to compete with Virtua Fighter. The System 11 launched in arcades several months before the PlayStation's release, with the arcade release of Tekken in September 1994. Despite securing the support of various Japanese studios, Sony had no developers of their own by the time the PlayStation was in development. This changed in 1993 when Sony acquired the Liverpudlian company Psygnosis (later renamed SCE Liverpool) for US$48 million, securing their first in-house development team. The acquisition meant that Sony could have more launch games ready for the PlayStation's release in Europe and North America. Ian Hetherington, Psygnosis' co-founder, was disappointed after receiving early builds of the PlayStation and recalled that the console "was not fit for purpose" until his team got involved with it. Hetherington frequently clashed with Sony executives over broader ideas; at one point it was suggested that a television with a built-in PlayStation be produced. In the months leading up to the PlayStation's launch, Psygnosis had around 500 full-time staff working on games and assisting with software development. The purchase of Psygnosis marked another turning point for the PlayStation as it played a vital role in creating the console's development kits. While Sony had provided MIPS R4000-based Sony NEWS workstations for PlayStation development, Psygnosis employees disliked the thought of developing on these expensive workstations and asked Bristol-based SN Systems to create an alternative PC-based development system. Andy Beveridge and Martin Day, owners of SN Systems, had previously supplied development hardware for other consoles such as the Mega Drive, Atari ST, and the SNES. When Psygnosis arranged an audience for SN Systems with Sony's Japanese executives at the January 1994 CES in Las Vegas, Beveridge and Day presented their prototype of the condensed development kit, which could run on an ordinary personal computer with two extension boards. Impressed, Sony decided to abandon their plans for a workstation-based development system in favour of SN Systems's, thus securing a cheaper and more efficient method for designing software. An order of over 600 systems followed, and SN Systems supplied Sony with additional software such as an assembler, linker, and a debugger. SN Systems produced development kits for future PlayStation systems, including the PlayStation 2 and was bought out by Sony in 2005. Sony strived to make game production as streamlined and inclusive as possible, in contrast to the relatively isolated approach of Sega and Nintendo. Phil Harrison, representative director of SCEE, believed that Sony's emphasis on developer assistance reduced most time-consuming aspects of development. As well as providing programming libraries, SCE headquarters in London, California, and Tokyo housed technical support teams that could work closely with third-party developers if needed. Sony did not favour their own over non-Sony products, unlike Nintendo; Peter Molyneux of Bullfrog Productions admired Sony's open-handed approach to software developers and lauded their decision to use PCs as a development platform, remarking that "[it was] like being released from jail in terms of the freedom you have". Another strategy that helped attract software developers was the PlayStation's use of the CD-ROM format instead of traditional cartridges. Nintendo cartridges were expensive to manufacture, and the company controlled all production, prioritising their own games, while inexpensive compact disc manufacturing occurred at dozens of locations around the world. The PlayStation's architecture and interconnectability with PCs was beneficial to many software developers. The use of the programming language C proved useful, as it safeguarded future compatibility of the machine should developers decide to make further hardware revisions. Despite the inherent flexibility, some developers found themselves restricted due to the console's lack of RAM. While working on beta builds of the PlayStation, Molyneux observed that its MIPS processor was not "quite as bullish" compared to that of a fast PC and said that it took his team two weeks to port their PC code to the PlayStation development kits and another fortnight to achieve a four-fold speed increase. An engineer from Ocean Software, one of Europe's largest game developers at the time, thought that allocating RAM was a challenging aspect given the 3.5 megabyte restriction. Kutaragi said that while it would have been easy to double the amount of RAM for the PlayStation, the development team refrained from doing so to keep the retail cost down. Kutaragi saw the biggest challenge in developing the system to be balancing the conflicting goals of high performance, low cost, and being easy to program for, and felt he and his team were successful in this regard. Its technical specifications were finalised in 1993 and its design during 1994. The PlayStation name and its final design were confirmed during a press conference on May 10, 1994, although the price and release dates had not been disclosed yet. Sony released the PlayStation in Japan on 3 December 1994, a week after the release of the Sega Saturn, at a price of ¥39,800. Sales in Japan began with a "stunning" success with long queues in shops. Ohga later recalled that he realised how important PlayStation had become for Sony when friends and relatives begged for consoles for their children. PlayStation sold 100,000 units on the first day and two million units within six months, although the Saturn outsold the PlayStation in the first few weeks due to the success of Virtua Fighter. By the end of 1994, 300,000 PlayStation units were sold in Japan compared to 500,000 Saturn units. A grey market emerged for PlayStations shipped from Japan to North America and Europe, with buyers of such consoles paying up to £700. "When September 1995 arrived and Sony's Playstation roared out of the gate, things immediately felt different than [sic] they did with the Saturn launch earlier that year. Sega dropped the Saturn $100 to match the Playstation's $299 debut price, but sales weren't even close—Playstations flew out the door as fast as we could get them in stock. Before the release in North America, Sega and Sony presented their consoles at the first Electronic Entertainment Expo (E3) in Los Angeles on 11 May 1995. At their keynote presentation, Sega of America CEO Tom Kalinske revealed that their Saturn console would be released immediately to select retailers at a price of $399. Next came Sony's turn: Olaf Olafsson, the head of SCEA, summoned Steve Race, the head of development, to the conference stage, who said "$299" and left the audience with a round of applause. The attention to the Sony conference was further bolstered by the surprise appearance of Michael Jackson and the showcase of highly anticipated games, including Wipeout (1995), Ridge Racer and Tekken (1994). In addition, Sony announced that no games would be bundled with the console. Although the Saturn had released early in the United States to gain an advantage over the PlayStation, the surprise launch upset many retailers who were not informed in time, harming sales. Some retailers such as KB Toys responded by dropping the Saturn entirely. The PlayStation went on sale in North America on 9 September 1995. It sold more units within two days than the Saturn had in five months, with almost all of the initial shipment of 100,000 units sold in advance and shops across the country running out of consoles and accessories. The well-received Ridge Racer contributed to the PlayStation's early success, — with some critics considering it superior to Sega's arcade counterpart Daytona USA (1994) — as did Battle Arena Toshinden (1995). There were over 100,000 pre-orders placed and 17 games available on the market by the time of the PlayStation's American launch, in comparison to the Saturn's six launch games. The PlayStation released in Europe on 29 September 1995 and in Australia on 15 November 1995. By November it had already outsold the Saturn by three to one in the United Kingdom, where Sony had allocated a £20 million marketing budget during the Christmas season compared to Sega's £4 million. Sony found early success in the United Kingdom by securing listings with independent shop owners as well as prominent High Street chains such as Comet and Argos. Within its first year, the PlayStation secured over 20% of the entire American video game market. From September to the end of 1995, sales in the United States amounted to 800,000 units, giving the PlayStation a commanding lead over the other fifth-generation consoles,[b] though the SNES and Mega Drive from the fourth generation still outsold it. Sony reported that the attach rate of sold games and consoles was four to one. To meet increasing demand, Sony chartered jumbo jets and ramped up production in Europe and North America. By early 1996, the PlayStation had grossed $2 billion (equivalent to $4.106 billion 2025) from worldwide hardware and software sales. By late 1996, sales in Europe totalled 2.2 million units, including 700,000 in the UK. Approximately 400 PlayStation games were in development, compared to around 200 games being developed for the Saturn and 60 for the Nintendo 64. In India, the PlayStation was launched in test market during 1999–2000 across Sony showrooms, selling 100 units. Sony finally launched the console (PS One model) countrywide on 24 January 2002 with the price of Rs 7,990 and 26 games available from start. PlayStation was also doing well in markets where it was never officially released. For example, in Brazil, due to the registration of the trademark by a third company, the console could not be released, which was why the market was taken over by the officially distributed Sega Saturn during the first period, but as the Sega console withdraws, PlayStation imports and large piracy increased. In another market, China, the most popular 32-bit console was Sega Saturn, but after leaving the market, PlayStation grown with a base of 300,000 users until January 2000, although Sony China did not have plans to release it. The PlayStation was backed by a successful marketing campaign, allowing Sony to gain an early foothold in Europe and North America. Initially, PlayStation demographics were skewed towards adults, but the audience broadened after the first price drop. While the Saturn was positioned towards 18- to 34-year-olds, the PlayStation was initially marketed exclusively towards teenagers. Executives from both Sony and Sega reasoned that because younger players typically looked up to older, more experienced players, advertising targeted at teens and adults would draw them in too. Additionally, Sony found that adults reacted best to advertising aimed at teenagers; Lee Clow surmised that people who started to grow into adulthood regressed and became "17 again" when they played video games. The console was marketed with advertising slogans stylised as "LIVE IN YUR WRLD. PLY IN URS" (Live in Your World. Play in Ours.) and "U R NOT E" (red E). The four geometric shapes were derived from the symbols for the four buttons on the controller. Clow thought that by invoking such provocative statements, gamers would respond to the contrary and say "'Bullshit. Let me show you how ready I am.'" As the console's appeal enlarged, Sony's marketing efforts broadened from their earlier focus on mature players to specifically target younger children as well. Shortly after the PlayStation's release in Europe, Sony tasked marketing manager Geoff Glendenning with assessing the desires of a new target audience. Sceptical over Nintendo and Sega's reliance on television campaigns, Glendenning theorised that young adults transitioning from fourth-generation consoles would feel neglected by marketing directed at children and teenagers. Recognising the influence early 1990s underground clubbing and rave culture had on young people, especially in the United Kingdom, Glendenning felt that the culture had become mainstream enough to help cultivate PlayStation's emerging identity. Sony partnered with prominent nightclub owners such as Ministry of Sound and festival promoters to organise dedicated PlayStation areas where demonstrations of select games could be tested. Sheffield-based graphic design studio The Designers Republic was contracted by Sony to produce promotional materials aimed at a fashionable, club-going audience. Psygnosis' Wipeout in particular became associated with nightclub culture as it was widely featured in venues. By 1997, there were 52 nightclubs in the United Kingdom with dedicated PlayStation rooms. Glendenning recalled that he had discreetly used at least £100,000 a year in slush fund money to invest in impromptu marketing. In 1996, Sony expanded their CD production facilities in the United States due to the high demand for PlayStation games, increasing their monthly output from 4 million discs to 6.5 million discs. This was necessary because PlayStation sales were running at twice the rate of Saturn sales, and its lead dramatically increased when both consoles dropped in price to $199 that year. The PlayStation also outsold the Saturn at a similar ratio in Europe during 1996, with 2.2 million consoles sold in the region by the end of the year. Sales figures for PlayStation hardware and software only increased following the launch of the Nintendo 64. Tokunaka speculated that the Nintendo 64 launch had actually helped PlayStation sales by raising public awareness of the gaming market through Nintendo's added marketing efforts. Despite this, the PlayStation took longer to achieve dominance in Japan. Tokunaka said that, even after the PlayStation and Saturn had been on the market for nearly two years, the competition between them was still "very close", and neither console had led in sales for any meaningful length of time. By 1998, Sega, encouraged by their declining market share and significant financial losses, launched the Dreamcast as a last-ditch attempt to stay in the industry. Although its launch was successful, the technically superior 128-bit console was unable to subdue Sony's dominance in the industry. Sony still held 60% of the overall video game market share in North America at the end of 1999. Sega's initial confidence in their new console was undermined when Japanese sales were lower than expected, with disgruntled Japanese consumers reportedly returning their Dreamcasts in exchange for PlayStation software. On 2 March 1999, Sony officially revealed details of the PlayStation 2, which Kutaragi announced would feature a graphics processor designed to push more raw polygons than any console in history, effectively rivalling most supercomputers. The PlayStation continued to sell strongly at the turn of the new millennium: in June 2000, Sony released the PSOne, a smaller, redesigned variant which went on to outsell all other consoles in that year, including the PlayStation 2. In 2005, PlayStation became the first console to ship 100 million units with the PlayStation 2 later achieving this faster than its predecessor. The combined successes of both PlayStation consoles led to Sega retiring the Dreamcast in 2001, and abandoning the console business entirely. The PlayStation was eventually discontinued on 23 March 2006—over eleven years after its release, and less than a year before the debut of the PlayStation 3. Hardware The main microprocessor is a R3000 CPU made by LSI Logic operating at a clock rate of 33.8688 MHz and 30 MIPS. This 32-bit CPU relies heavily on the "cop2" 3D and matrix math coprocessor on the same die to provide the necessary speed to render complex 3D graphics. The role of the separate GPU chip is to draw 2D polygons and apply shading and textures to them: the rasterisation stage of the graphics pipeline. Sony's custom 16-bit sound chip supports ADPCM sources with up to 24 sound channels and offers a sampling rate of up to 44.1 kHz and music sequencing. It features 2 MB of main RAM, with an additional 1 MB of video RAM. The PlayStation has a maximum colour depth of 16.7 million true colours with 32 levels of transparency and unlimited colour look-up tables. The PlayStation can output composite, S-Video or RGB video signals through its AV Multi connector (with older models also having RCA connectors for composite), displaying resolutions from 256×224 to 640×480 pixels. Different games can use different resolutions. Earlier models also had proprietary parallel and serial ports that could be used to connect accessories or multiple consoles together; these were later removed due to a lack of usage. The PlayStation uses a proprietary video compression unit, MDEC, which is integrated into the CPU and allows for the presentation of full motion video at a higher quality than other consoles of its generation. Unusual for the time, the PlayStation lacks a dedicated 2D graphics processor; 2D elements are instead calculated as polygons by the Geometry Transfer Engine (GTE) so that they can be processed and displayed on screen by the GPU. While running, the GPU can also generate a total of 4,000 sprites and 180,000 polygons per second, in addition to 360,000 per second flat-shaded. The PlayStation went through a number of variants during its production run. Externally, the most notable change was the gradual reduction in the number of external connectors from the rear of the unit. This started with the original Japanese launch units; the SCPH-1000, released on 3 December 1994, was the only model that had an S-Video port, as it was removed from the next model. Subsequent models saw a reduction in number of parallel ports, with the final version only retaining one serial port. Sony marketed a development kit for amateur developers known as the Net Yaroze (meaning "Let's do it together" in Japanese). It was launched in June 1996 in Japan, and following public interest, was released the next year in other countries. The Net Yaroze allowed hobbyists to create their own games and upload them via an online forum run by Sony. The console was only available to buy through an ordering service and with the necessary documentation and software to program PlayStation games and applications through C programming compilers. On 7 July 2000, Sony released the PS One (stylised as "PS one" or "PSone"), a smaller, redesigned version of the original PlayStation. It was the highest-selling console through the end of the year, outselling all other consoles—including the PlayStation 2. In 2002, Sony released a 5-inch (130 mm) LCD screen add-on for the PS One, referred to as the "Combo pack". It also included a car cigarette lighter adaptor adding an extra layer of portability. Production of the LCD "Combo Pack" ceased in 2004, when the popularity of the PlayStation began to wane in markets outside Japan. A total of 28.15 million PS One units had been sold by the time it was discontinued in March 2006. Three iterations of the PlayStation's controller were released over the console's lifespan. The first controller, the PlayStation controller, was released alongside the PlayStation in December 1994. It features four individual directional buttons (as opposed to a conventional D-pad), a pair of shoulder buttons on both sides, Start and Select buttons in the centre, and four face buttons consisting of simple geometric shapes: a green triangle, red circle, blue cross, and a pink square (, , , ). Rather than depicting traditionally used letters or numbers onto its buttons, the PlayStation controller established a trademark which would be incorporated heavily into the PlayStation brand. Teiyu Goto, the designer of the original PlayStation controller, said that the circle and cross represent "yes" and "no", respectively (though this layout is reversed in Western versions); the triangle symbolises a point of view and the square is equated to a sheet of paper to be used to access menus. The European and North American models of the original PlayStation controllers are roughly 10% larger than its Japanese variant, to account for the fact the average person in those regions has larger hands than the average Japanese person. Sony's first analogue gamepad, the PlayStation Analog Joystick (often erroneously referred to as the "Sony Flightstick"), was first released in Japan in April 1996. Featuring two parallel joysticks, it uses potentiometer technology previously used on consoles such as the Vectrex; instead of relying on binary eight-way switches, the controller detects minute angular changes through the entire range of motion. The stick also features a thumb-operated digital hat switch on the right joystick, corresponding to the traditional D-pad, and used for instances when simple digital movements were necessary. The Analog Joystick sold poorly in Japan due to its high cost and cumbersome size. The increasing popularity of 3D games prompted Sony to add analogue sticks to its controller design to give users more freedom over their movements in virtual 3D environments. The first official analogue controller, the Dual Analog Controller, was revealed to the public in a small glass booth at the 1996 PlayStation Expo in Japan, and released in April 1997 to coincide with the Japanese releases of analogue-capable games Tobal 2 and Bushido Blade. In addition to the two analogue sticks (which also introduced two new buttons mapped to clicking in the analogue sticks), the Dual Analog controller features an "Analog" button and LED beneath the "Start" and "Select" buttons which toggles analogue functionality on or off. The controller also features rumble support, though Sony decided that haptic feedback would be removed from all overseas iterations before the United States release. A Sony spokesman stated that the feature was removed for "manufacturing reasons", although rumours circulated that Nintendo had attempted to legally block the release of the controller outside Japan due to similarities with the Nintendo 64 controller's Rumble Pak. However, a Nintendo spokesman denied that Nintendo took legal action. Next Generation's Chris Charla theorised that Sony dropped vibration feedback to keep the price of the controller down. In November 1997, Sony introduced the DualShock controller. Its name derives from its use of two (dual) vibration motors (shock). Unlike its predecessor, its analogue sticks feature textured rubber grips, longer handles, slightly different shoulder buttons and has rumble feedback included as standard on all versions. The DualShock later replaced its predecessors as the default controller. Sony released a series of peripherals to add extra layers of functionality to the PlayStation. Such peripherals include memory cards, the PlayStation Mouse, the PlayStation Link Cable, the Multiplayer Adapter (a four-player multitap), the Memory Drive (a disk drive for 3.5-inch floppy disks), the GunCon (a light gun), and the Glasstron (a monoscopic head-mounted display). Released exclusively in Japan, the PocketStation is a memory card peripheral which acts as a miniature personal digital assistant. The device features a monochrome liquid crystal display (LCD), infrared communication capability, a real-time clock, built-in flash memory, and sound capability. Sharing similarities with the Dreamcast's VMU peripheral, the PocketStation was typically distributed with certain PlayStation games, enhancing them with added features. The PocketStation proved popular in Japan, selling over five million units. Sony planned to release the peripheral outside Japan but the release was cancelled, despite receiving promotion in Europe and North America. In addition to playing games, most PlayStation models are equipped to play CD-Audio. The Asian model SCPH-5903 can also play Video CDs. Like most CD players, the PlayStation can play songs in a programmed order, shuffle the playback order of the disc and repeat one song or the entire disc. Later PlayStation models use a music visualisation function called SoundScope. This function, as well as a memory card manager, is accessed by starting the console without either inserting a game or closing the CD tray, thereby accessing a graphical user interface (GUI) for the PlayStation BIOS. The GUI for the PS One and PlayStation differ depending on the firmware version: the original PlayStation GUI had a dark blue background with rainbow graffiti used as buttons, while the early PAL PlayStation and PS One GUI had a grey blocked background with two icons in the middle. PlayStation emulation is versatile and can be run on numerous modern devices. Bleem! was a commercial emulator which was released for IBM-compatible PCs and the Dreamcast in 1999. It was notable for being aggressively marketed during the PlayStation's lifetime, and was the centre of multiple controversial lawsuits filed by Sony. Bleem! was programmed in assembly language, which allowed it to emulate PlayStation games with improved visual fidelity, enhanced resolutions, and filtered textures that was not possible on original hardware. Sony sued Bleem! two days after its release, citing copyright infringement and accusing the company of engaging in unfair competition and patent infringement by allowing use of PlayStation BIOSs on a Sega console. Bleem! were subsequently forced to shut down in November 2001. Sony was aware that using CDs for game distribution could have left games vulnerable to piracy, due to the growing popularity of CD-R and optical disc drives with burning capability. To preclude illegal copying, a proprietary process for PlayStation disc manufacturing was developed that, in conjunction with an augmented optical drive in Tiger H/E assembly, prevented burned copies of games from booting on an unmodified console. Specifically, all genuine PlayStation discs were printed with a small section of deliberate irregular data, which the PlayStation's optical pick-up was capable of detecting and decoding. Consoles would not boot game discs without a specific wobble frequency contained in the data of the disc pregap sector (the same system was also used to encode discs' regional lockouts). This signal was within Red Book CD tolerances, so PlayStation discs' actual content could still be read by a conventional disc drive; however, the disc drive could not detect the wobble frequency (therefore duplicating the discs omitting it), since the laser pick-up system of any optical disc drive would interpret this wobble as an oscillation of the disc surface and compensate for it in the reading process. Early PlayStations, particularly early 1000 models, experience skipping full-motion video or physical "ticking" noises from the unit. The problems stem from poorly placed vents leading to overheating in some environments, causing the plastic mouldings inside the console to warp slightly and create knock-on effects with the laser assembly. The solution is to sit the console on a surface which dissipates heat efficiently in a well vented area or raise the unit up slightly from its resting surface. Sony representatives also recommended unplugging the PlayStation when it is not in use, as the system draws in a small amount of power (and therefore heat) even when turned off. The first batch of PlayStations use a KSM-440AAM laser unit, whose case and movable parts are all built out of plastic. Over time, the plastic lens sled rail wears out—usually unevenly—due to friction. The placement of the laser unit close to the power supply accelerates wear, due to the additional heat, which makes the plastic more vulnerable to friction. Eventually, one side of the lens sled will become so worn that the laser can tilt, no longer pointing directly at the CD; after this, games will no longer load due to data read errors. Sony fixed the problem by making the sled out of die-cast metal and placing the laser unit further away from the power supply on later PlayStation models. Due to an engineering oversight, the PlayStation does not produce a proper signal on several older models of televisions, causing the display to flicker or bounce around the screen. Sony decided not to change the console design, since only a small percentage of PlayStation owners used such televisions, and instead gave consumers the option of sending their PlayStation unit to a Sony service centre to have an official modchip installed, allowing play on older televisions. Game library The PlayStation featured a diverse game library which grew to appeal to all types of players. Critically acclaimed PlayStation games included Final Fantasy VII (1997), Crash Bandicoot (1996), Spyro the Dragon (1998), Metal Gear Solid (1998), all of which became established franchises. Final Fantasy VII is credited with allowing role-playing games to gain mass-market appeal outside Japan, and is considered one of the most influential and greatest video games ever made. The PlayStation's bestselling game is Gran Turismo (1997), which sold 10.85 million units. After the PlayStation's discontinuation in 2006, the cumulative software shipment was 962 million units. Following its 1994 launch in Japan, early games included Ridge Racer, Crime Crackers, King's Field, Motor Toon Grand Prix, Toh Shin Den (i.e. Battle Arena Toshinden), and Kileak: The Blood. The first two games available at its later North American launch were Jumping Flash! (1995) and Ridge Racer, with Jumping Flash! heralded as an ancestor for 3D graphics in console gaming. Wipeout, Air Combat, Twisted Metal, Warhawk and Destruction Derby were among the popular first-year games, and the first to be reissued as part of Sony's Greatest Hits or Platinum range. At the time of the PlayStation's first Christmas season, Psygnosis had produced around 70% of its launch catalogue; their breakthrough racing game Wipeout was acclaimed for its techno soundtrack and helped raise awareness of Britain's underground music community. Eidos Interactive's action-adventure game Tomb Raider contributed substantially to the success of the console in 1996, with its main protagonist Lara Croft becoming an early gaming icon and garnering unprecedented media promotion. Licensed tie-in video games of popular films were also prevalent; Argonaut Games' 2001 adaptation of Harry Potter and the Philosopher's Stone went on to sell over eight million copies late in the console's lifespan. Third-party developers committed largely to the console's wide-ranging game catalogue even after the launch of the PlayStation 2; some of the notable exclusives in this era include Harry Potter and the Philosopher's Stone, Fear Effect 2: Retro Helix, Syphon Filter 3, C-12: Final Resistance, Dance Dance Revolution Konamix and Digimon World 3.[c] Sony assisted with game reprints as late as 2008 with Metal Gear Solid: The Essential Collection, this being the last PlayStation game officially released and licensed by Sony. Initially, in the United States, PlayStation games were packaged in long cardboard boxes, similar to non-Japanese 3DO and Saturn games. Sony later switched to the jewel case format typically used for audio CDs and Japanese video games, as this format took up less retailer shelf space (which was at a premium due to the large number of PlayStation games being released), and focus testing showed that most consumers preferred this format. Reception The PlayStation was mostly well received upon release. Critics in the west generally welcomed the new console; the staff of Next Generation reviewed the PlayStation a few weeks after its North American launch, where they commented that, while the CPU is "fairly average", the supplementary custom hardware, such as the GPU and sound processor, is stunningly powerful. They praised the PlayStation's focus on 3D, and complemented the comfort of its controller and the convenience of its memory cards. Giving the system 41⁄2 out of 5 stars, they concluded, "To succeed in this extremely cut-throat market, you need a combination of great hardware, great games, and great marketing. Whether by skill, luck, or just deep pockets, Sony has scored three out of three in the first salvo of this war." Albert Kim from Entertainment Weekly praised the PlayStation as a technological marvel, rivalling that of Sega and Nintendo. Famicom Tsūshin scored the console a 19 out of 40, lower than the Saturn's 24 out of 40, in May 1995. In a 1997 year-end review, a team of five Electronic Gaming Monthly editors gave the PlayStation scores of 9.5, 8.5, 9.0, 9.0, and 9.5—for all five editors, the highest score they gave to any of the five consoles reviewed in the issue. They lauded the breadth and quality of the games library, saying it had vastly improved over previous years due to developers mastering the system's capabilities in addition to Sony revising their stance on 2D and role playing games. They also complimented the low price point of the games compared to the Nintendo 64's, and noted that it was the only console on the market that could be relied upon to deliver a solid stream of games for the coming year, primarily due to third party developers almost unanimously favouring it over its competitors. Legacy SCE was an upstart in the video game industry in late 1994, as the video game market in the early 1990s was dominated by Nintendo and Sega. Nintendo had been the clear leader in the industry since the introduction of the Nintendo Entertainment System in 1985 and the Nintendo 64 was initially expected to maintain this position. The PlayStation's target audience included the generation which was the first to grow up with mainstream video games, along with 18- to 29-year-olds who were not the primary focus of Nintendo. By the late 1990s, Sony became a highly regarded console brand due to the PlayStation, with a significant lead over second-place Nintendo, while Sega was relegated to a distant third. The PlayStation became the first "computer entertainment platform" to ship over 100 million units worldwide, with many critics attributing the console's success to third-party developers. It remains the sixth best-selling console of all time as of 2025[update], with a total of 102.49 million units sold. Around 7,900 individual games were published for the console during its 11-year life span, the second-most games ever produced for a console. Its success resulted in a significant financial boon for Sony as profits from their video game division contributed to 23%. Sony's next-generation PlayStation 2, which is backward compatible with the PlayStation's DualShock controller and games, was announced in 1999 and launched in 2000. The PlayStation's lead in installed base and developer support paved the way for the success of its successor, which overcame the earlier launch of the Sega's Dreamcast and then fended off competition from Microsoft's newcomer Xbox and Nintendo's GameCube. The PlayStation 2's immense success and failure of the Dreamcast were among the main factors which led to Sega abandoning the console market. To date, five PlayStation home consoles have been released, which have continued the same numbering scheme, as well as two portable systems. The PlayStation 3 also maintained backward compatibility with original PlayStation discs. Hundreds of PlayStation games have been digitally re-released on the PlayStation Portable, PlayStation 3, PlayStation Vita, PlayStation 4, and PlayStation 5. The PlayStation has often ranked among the best video game consoles. In 2018, Retro Gamer named it the third best console, crediting its sophisticated 3D capabilities as one of its key factors in gaining mass success, and lauding it as a "game-changer in every sense possible". In 2009, IGN ranked the PlayStation the seventh best console in their list, noting its appeal towards older audiences to be a crucial factor in propelling the video game industry, as well as its assistance in transitioning game industry to use the CD-ROM format. Keith Stuart from The Guardian likewise named it as the seventh best console in 2020, declaring that its success was so profound it "ruled the 1990s". In January 2025, Lorentio Brodesco announced the nsOne project, attempting to reverse engineer PlayStation's motherboard. Brodesco stated that "detailed documentation on the original motherboard was either incomplete or entirely unavailable". The project was successfully crowdfunded via Kickstarter. In June, Brodesco manufactured the first working motherboard, promising to bring a fully rooted version with multilayer routing as well as documentation and design files in the near future. The success of the PlayStation contributed to the demise of cartridge-based home consoles. While not the first system to use an optical disc format, it was the first highly successful one, and ended up going head-to-head with the proprietary cartridge-relying Nintendo 64,[d] which the industry had expected to use CDs like PlayStation. After the demise of the Sega Saturn, Nintendo was left as Sony's main competitor in Western markets. Nintendo chose not to use CDs for the Nintendo 64; they were likely concerned with the proprietary cartridge format's ability to help enforce copy protection, given their substantial reliance on licensing and exclusive games for their revenue. Besides their larger capacity, CD-ROMs could be produced in bulk quantities at a much faster rate than ROM cartridges, a week compared to two to three months. Further, the cost of production per unit was far cheaper, allowing Sony to offer games about 40% lower cost to the user compared to ROM cartridges while still making the same amount of net revenue. In Japan, Sony published fewer copies of a wide variety of games for the PlayStation as a risk-limiting step, a model that had been used by Sony Music for CD audio discs. The production flexibility of CD-ROMs meant that Sony could produce larger volumes of popular games to get onto the market quickly, something that could not be done with cartridges due to their manufacturing lead time. The lower production costs of CD-ROMs also allowed publishers an additional source of profit: budget-priced reissues of games which had already recouped their development costs. Tokunaka remarked in 1996: Choosing CD-ROM is one of the most important decisions that we made. As I'm sure you understand, PlayStation could just as easily have worked with masked ROM [cartridges]. The 3D engine and everything—the whole PlayStation format—is independent of the media. But for various reasons (including the economies for the consumer, the ease of the manufacturing, inventory control for the trade, and also the software publishers) we deduced that CD-ROM would be the best media for PlayStation. The increasing complexity of developing games pushed cartridges to their storage limits and gradually discouraged some third-party developers. Part of the CD format's appeal to publishers was that they could be produced at a significantly lower cost and offered more production flexibility to meet demand. As a result, some third-party developers switched to the PlayStation, including Square and Enix, whose Final Fantasy VII and Dragon Quest VII respectively had been planned for the Nintendo 64 (both companies later merged to form Square Enix). Other developers released fewer games for the Nintendo 64 (Konami, releasing only thirteen N64 games but over fifty on the PlayStation). Nintendo 64 game releases were less frequent than the PlayStation's, with many being developed by either Nintendo themselves or second-parties such as Rare. The PlayStation Classic is a dedicated video game console made by Sony Interactive Entertainment that emulates PlayStation games. It was announced in September 2018 at the Tokyo Game Show, and released on 3 December 2018, the 24th anniversary of the release of the original console. As a dedicated console, the PlayStation Classic features 20 pre-installed games; the games run off the open source emulator PCSX. The console is bundled with two replica wired PlayStation controllers (those without analogue sticks), an HDMI cable, and a USB-Type A cable. Internally, the console uses a MediaTek MT8167a Quad A35 system on a chip with four central processing cores clocked at @ 1.5 GHz and a Power VR GE8300 graphics processing unit. It includes 16 GB of eMMC flash storage and 1 Gigabyte of DDR3 SDRAM. The PlayStation Classic is 45% smaller than the original console. The PlayStation Classic received negative reviews from critics and was compared unfavorably to Nintendo's rival Nintendo Entertainment System Classic Edition and Super Nintendo Entertainment System Classic Edition. Criticism was directed at its meagre game library, user interface, emulation quality, use of PAL versions for certain games, use of the original controller, and high retail price, though the console's design received praise. The console sold poorly. See also Notes References
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Contents Fox News The Fox News Channel (FNC), often referred to as Fox News, is an American multinational conservative news and political commentary television channel and website based in New York City. Owned by the Fox News Media subsidiary of Fox Corporation, it is the most-watched cable news network in the United States, and as of 2023 it generates approximately 70% of its parent company's pre-tax profit. The channel broadcasts primarily from studios at 1211 Avenue of the Americas in Midtown Manhattan. Fox News provides service to 86 countries and territories, with international broadcasts featuring Fox Extra segments during advertising breaks. The channel was created by Australian-born American media mogul Rupert Murdoch in 1996 to appeal to a conservative audience, hiring former Republican media consultant and CNBC executive Roger Ailes as its founding CEO. It launched on October 7, 1996 to 17 million cable subscribers. Fox News grew during the late 1990s and 2000s to become the dominant United States cable news subscription network. By September 2018, 87 million U.S. households (91% of television subscribers) could receive Fox News. In 2019, it was the top-rated cable network, averaging 2.5 million viewers in prime time. Murdoch, the executive chairman since 2016, said in 2023 that he would step down and hand responsibilities to his son, Lachlan. Suzanne Scott has been the CEO since 2018. It has been criticized for biased and false reporting in favor of the Republican Party, its politicians, and conservative causes, while portraying the Democratic Party in a negative light. Some researchers have argued that the channel is damaging to the integrity of news overall, and acts as the de facto broadcasting arm of the Republican Party. Since its formation, the channel has politically shifted further rightwards over time, and by 2016 became solidly pro-Trump. The channel has knowingly endorsed false conspiracy theories to promote Republican and conservative causes. These include, but are not limited to, false claims regarding fraud with Dominion voting machines during their reporting on the 2020 presidential election, climate change denial,[a] and COVID-19 misinformation. It has also been involved in multiple controversies, including accusations of permitting sexual harassment and racial discrimination by on-air hosts, executives, and employees, ultimately paying out millions of dollars in legal settlements. History In May 1985, Australian publisher Rupert Murdoch announced that he and American industrialist and philanthropist Marvin Davis intended to develop "a network of independent stations as a fourth marketing force" to directly compete with CBS, NBC, and ABC through the purchase of six television stations owned by Metromedia. In July 1985, 20th Century Fox announced Murdoch had completed his purchase of 50% of Fox Filmed Entertainment, the parent company of 20th Century Fox Film Corporation. Subsequently, and prior to founding FNC, Murdoch had gained experience in the 24-hour news business when News Corporation's BSkyB subsidiary began Europe's first 24-hour news channel (Sky News) in the United Kingdom in 1989. With the success of his efforts establishing Fox as a TV network in the United States, experience gained from Sky News and the turnaround of 20th Century Fox, Murdoch announced on January 30, 1996, that News Corp. would launch a 24-hour news channel on cable and satellite systems in the United States as part of a News Corp. "worldwide platform" for Fox programming: "The appetite for news – particularly news that explains to people how it affects them – is expanding enormously". In February 1996, after former U.S. Republican Party political strategist and NBC executive Roger Ailes left cable television channel America's Talking (now MSNBC), Murdoch asked him to start Fox News Channel. Ailes demanded five months of 14-hour workdays and several weeks of rehearsal shows before its launch on October 7, 1996. At its debut, 17 million households were able to watch FNC; however, it was absent from the largest U.S. media markets of New York City and Los Angeles. Rolling news coverage during the day consisted of 20-minute single-topic shows such as Fox on Crime or Fox on Politics, surrounded by news headlines. Interviews featured facts at the bottom of the screen about the topic or the guest. The flagship newscast at the time was The Schneider Report, with Mike Schneider's fast-paced delivery of the news. During the evening, Fox featured opinion shows: The O'Reilly Report (later The O'Reilly Factor), The Crier Report (hosted by Catherine Crier) and Hannity & Colmes. From the beginning, FNC has placed heavy emphasis on visual presentation. Graphics were designed to be colorful and gain attention; this helped the viewer to grasp the main points of what was being said, even if they could not hear the host (with on-screen text summarizing the position of the interviewer or speaker, and "bullet points" when a host was delivering commentary). Fox News also created the "Fox News Alert", which interrupted its regular programming when a breaking news story occurred. To accelerate its adoption by cable providers, Fox News paid systems up to $11 per subscriber to distribute the channel. This contrasted with the normal practice, in which cable operators paid stations carriage fees for programming. When Time Warner bought Ted Turner's Turner Broadcasting System, a federal antitrust consent decree required Time Warner to carry a second all-news channel in addition to its own CNN on its cable systems. Time Warner selected MSNBC as the secondary news channel, not Fox News. Fox News claimed this violated an agreement (to carry Fox News). Citing its agreement to keep its U.S. headquarters and a large studio in New York City, News Corporation enlisted the help of Mayor Rudolph Giuliani's administration to pressure Time Warner Cable (one of the city's two cable providers) to transmit Fox News on a city-owned channel. City officials threatened to take action affecting Time Warner's cable franchises in the city. In 2001, during the September 11 attacks, Fox News was the first news organization to run a news ticker on the bottom of the screen to keep up with the flow of information that day. The ticker has remained, and has proven popular with viewers. In January 2002, Fox News surpassed CNN in ratings for the first time. Accelerating in the 2000s, the role of conservative media and Fox News led to it being trusted by the Republican Party's base over that of traditional conservative elites, and partly led to Donald Trump's victory in the Republican primaries against the wishes of a very weak party establishment and traditional power brokers.: 27–28 Fox News subsequently became solidly pro-Trump, and cultivated deep ties between itself and the government. For his first term, nearly 20 current and former Fox News hosts received administrative and cabinet-level positions in his administration, and his second term also featured 23 current and former Fox News hosts appointed and nominated. In 2023, The Economist reported that Murdoch had "ditched a plan" to remerge News Corporation with Fox because it "faced resistance from News Corp investors unhappy at the prospect of being lumped together with Fox News, which they consider a toxic brand." Later that year, Murdoch said he would step down and that his son Lachlan would take over both Fox Corporation and News Corp, although the succession was disputed legally. In September 2025, Lachlan Murdoch secured control of Fox News, the New York Post and The Wall Street Journal in a $3.3 billion dollar deal as part of a renegotiated trust. The new trust and Lachlan's control was described as ensuring the channel's conservative slant until its expiration in 2050. Political alignment Fox News has been identified as practicing biased and false reporting in favor of the Republican Party, its politicians, and conservative causes, while portraying the Democratic Party in a negative light. Fox News has been characterized by critics, commentators, and researchers as an advocacy news organization[b] and as damaging to the integrity of news overall. It has been criticized for sharing propaganda.[c] The network is pro-Trump. During and after the 2020 presidential election, its primetime hosts promoted Trump and the Republican Party, and host Jeanine Pirro was in communication with the chair of the Republican National Committee. By 2017, a growing number of studies and academic literature found Fox's prime-time programming engaging in rhetorical and nonfactual themes similar to propaganda and not journalism or persuasion. Academic studies have argued that it has played a major role in boosting Republican turnout in American elections and that its role in American politics has been underestimated by political and communications scholars. Fox has been described as operating in an information silo where its audience views other media sources as "too liberal", and thus rely on Fox and no other forms of news media. Researchers and commentators have compared conservative Fox News as similar in purpose to liberal MSNBC, but that "the proportion of Fox News statements that are mostly false or worse is almost 50 percent higher than for MSNBC, and more than twice that of CNN". Its news coverage has gradually shifted further rightwards over time. Fox's most popular programs such as Hannity and Tucker Carlson Tonight do not make any claims to be accurate or fact-checked, and have little to no distinction between news and commentary. Media analyst Brian Stelter, who has written extensively about the network, observed in 2021 that in more recent years it had adjusted its programming to present "less news on the air and more opinions-about-the-news" throughout the day, on concerns it was losing viewers to more conservative competitors that were presenting such content. Outlets FNC maintains an archive of most of its programs. This archive also includes Movietone News series of newsreels from its now Disney-owned namesake movie studio, 20th Century Studios. Licensing for the Fox News archive is handled by ITN Source, the archiving division of ITN. FNC presents a variety of programming, with up to 15 hours of live broadcasting per day in addition to programming and content for the Fox Broadcasting Company. Most programs are broadcast from Fox News headquarters in New York City (at 1211 Avenue of the Americas), in its streetside studio on Sixth Avenue in the west wing of Rockefeller Center, sharing its headquarters with sister channel Fox Business Network. Fox News Channel has eight studios at its New York City headquarters that are used for its and Fox Business' programming: Studio B (used for Fox Business programming), Studio D (which has an area for studio audiences; no longer in current use), Studio E (used for Gutfeld! and The Journal Editorial Report), Studio F (used for The Story with Martha MacCallum, The Five, Fox Democracy 2020, Fox & Friends, Outnumbered, The Faulkner Focus, and Fox News Primetime), Studio G (which houses Fox Business shows, The Fox Report, Your World with Neil Cavuto, and Cavuto Live), Studio H (Fox News Deck used for breaking news coverage, no longer in current use), Studio J (used for America's Newsroom, Hannity, Fox News Live, Fox & Friends First, and Sunday Morning Futures) Starting in 2018, Thursday Night Football had its pregame show, Fox NFL Thursday, originating from Studio F. Another Fox Sports program, First Things First, also broadcasts from Studio E. Other such programs (such as Special Report with Bret Baier, The Ingraham Angle, Fox News @ Night, Media Buzz, and editions of Fox News Live not broadcast from the New York City studios) are broadcast from Fox News's Washington, D.C. studios, located on Capitol Hill across from Washington Union Station in a secured building shared by a number of other television networks, which includes NBC News and C-SPAN. The Next Revolution is broadcast from Fox News' Los Angeles bureau studio, which is also used for news updates coming from Los Angeles. Life, Liberty & Levin is done from Levin's personal studio in Virginia. Audio simulcasts of the channel are aired on SiriusXM Satellite Radio. In an October 11, 2009, in a New York Times article, Fox said its hard-news programming runs from "9 AM to 4 PM and 6 to 8 PM on weekdays". However, it makes no such claims for its other broadcasts, which primarily consist of editorial journalism and commentary. Fox News Channel began broadcasting in the 720p resolution format on May 1, 2008. This format is available on all major cable and satellite providers. Fox News Media produces Fox News Sunday, which airs on Fox Broadcasting and re-airs on the Fox News Channel. Fox News also produces occasional special event coverage that is broadcast on Fox Business. With the growth of the FNC, the company introduced a radio division, Fox News Radio, in 2003. Syndicated throughout the United States, the division provides short newscasts and talk radio programs featuring personalities from the television and radio divisions. In 2006, the company also introduced Fox News Talk, a satellite radio station featuring programs syndicated by (and featuring) Fox News personalities. Introduced in December 1995, the Fox News website features news articles and videos about national and international news. Content on the website is divided into politics, media, U.S., and business. Fox News' articles are based on the network's broadcasts, reports from Fox affiliates and articles produced by other news agencies, such as the Associated Press. Articles are usually accompanied by a video related to the article. Fox News Latino is the version aimed at a Hispanic audience, although presented almost entirely in English, with a Spanish section. According to NewsGuard, "Much of FoxNews.com's content, particularly articles produced by beat reporters and broadcasts produced by network correspondents, is accurate and well-sourced ... However, FoxNews.com has regularly advanced false and misleading claims on topics including the Jan. 6, 2021, attack on the U.S. Capitol, the Russo-Ukrainian War, COVID-19, and U.S. elections". In September 2008, FNC joined other channels in introducing a live streaming segment to its website: The Strategy Room, designed to appeal to older viewers. It airs weekdays from 9 AM to 5 PM and takes the form of an informal discussion, with running commentary on the news. Regular discussion programs include Business Hour, News With a View and God Talk. In March 2009, The Fox Nation was launched as a website intended to encourage readers to post articles commenting on the news. Fox News Mobile is the portion of the FNC website dedicated to streaming news clips formatted for video-enabled mobile phones. In 2018, Fox News announced that it would launch a subscription video on demand service known as Fox Nation. It serves as a companion service to FNC, carrying original and acquired talk, documentary, and reality programming designed to appeal to Fox News viewers. Some of its original programs feature Fox News personalities and contributors. Ratings and reception In 2003, Fox News saw a large ratings jump during the early stages of the U.S. invasion of Iraq. At the height of the conflict, according to some reports, Fox News had as much as a 300% increase in viewership (averaging 3.3 million viewers daily). In 2004, Fox News' ratings for its broadcast of the Republican National Convention exceeded those of the three major broadcast networks. During President George W. Bush's address, Fox News attracted 7.3 million viewers nationally; NBC, ABC, and CBS had a viewership of 5.9 million, 5.1 million, and 5.0 million respectively. Between late 2005 and early 2006, Fox News saw a brief decline in ratings. One was in the second quarter of 2006, when it lost viewers for every prime-time program compared with the previous quarter. The audience for Special Report with Brit Hume, for example, dropped 19%. Several weeks later, in the wake of the 2006 North Korean missile test and the 2006 Lebanon War, Fox saw a surge in viewership and remained the top-rated cable news channel. Fox produced eight of the top ten most-watched nightly cable news shows, with The O'Reilly Factor and Hannity & Colmes finishing first and second respectively. FNC ranked No. 8 in viewership among all cable channels in 2006, and No. 7 in 2007. The channel ranked number one during the week of Barack Obama's election (November 3–9) in 2008, and reached the top spot again in January 2010 (during the week of the special Senate election in Massachusetts). Comparing Fox to its 24-hour-news-channel competitors in May 2010, the channel drew an average daily prime-time audience of 1.8 million viewers (versus 747,000 for MSNBC and 595,000 for CNN). In September 2009, the Pew Research Center published a report on the public view of national news organizations. In the report, 72% of polled Republican Fox viewers rated the channel as "favorable", while 43% of polled Democratic viewers and 55% of all polled viewers shared that opinion. However, Fox was given the highest "unfavorable" rating of all national outlets studied (25% of all polled viewers). The report went on to say that "partisan differences in views of Fox News have increased substantially since 2007". A January 2020 Pew Research Center study found that 43% of all American adults trusted Fox News, including 65% of Republicans and people who lean Republican, while 61% of Democrats and people who lean Democratic distrusted Fox News. A Public Policy Polling poll concluded in 2013 that positive perceptions of FNC had declined from 2010. 41% of polled voters said they trust it, down from 49% in 2010, while 46% said they distrust it, up from 37% in 2010. It was also called the "most trusted" network by 34% of those polled, more than had said the same of any other network. On the night of October 22, 2012, Fox set a record for its highest-rated telecast, with 11.5 million viewers for the third U.S. presidential debate. In prime time the week before, Fox averaged almost 3.7 million viewers with a total day average of 1.66 million viewers. In prime time and total day ratings for the week of April 15 to 21, 2013, Fox News, propelled by its coverage of the Boston Marathon bombing, was the highest-ranked network on U.S. cable television, for the first time since August 2005, when Hurricane Katrina hit the Gulf Coast of the United States. January 2014 marked Fox News's 145th consecutive month as the highest-rated cable news channel. During that month, Fox News beat CNN and MSNBC combined in overall viewers in both prime time hours and the total day. In the third quarter of 2014, the network was the most-watched cable channel during prime time hours. During the final week of the campaign for the United States elections, 2014, Fox News had the highest ratings of any cable channel, news or otherwise. On election night itself, Fox News' coverage had higher ratings than that of any of the other five cable or network news sources among viewers between 25 and 54 years of age. The network hosted the first prime-time GOP candidates' forum of the 2016 campaign on August 6. The debate reached a record-breaking 24 million viewers, by far the largest audience for any cable news event. A 2017 study by the Berkman Klein Center for Internet & Society at Harvard University found that Fox News was the third most-shared source among supporters of Donald Trump on Twitter during the 2016 presidential election, behind The Hill and Breitbart News. In 2018, Fox News was rated by Nielsen as America's most watched cable network, averaging a record 2.4 million viewers in prime time and total day during the period of January 1 to December 30, 2018. In an October 2018 Simmons Research survey of the trust in 38 news organizations, Fox News was ranked roughly in the center, with 44.7% of surveyed Americans saying they trusted it. The COVID-19 pandemic led to increased viewership for all cable news networks. For the first calendar quarter of 2020 (January 1 – March 31), Fox News had their highest-rated quarter in the network's history, with Nielsen showing a prime time average total audience of 3.387 million viewers. Sean Hannity's program, Hannity, weeknights at 9 pm ET was the top-rated show in cable news for the quarter averaging 4.2 million viewers, a figure that not only beat out all of its cable news competition but also placed it ahead of network competition in the same time slot. Fox ended the quarter with the top five shows in prime time, with Fox's Tucker Carlson Tonight finishing the quarter in second overall with an average audience of 4.2 million viewers, followed by The Five, The Ingraham Angle, and Special Report with Bret Baier. The Rachel Maddow Show was the highest non-Fox show on cable, coming in sixth place. Finishing the quarter in 22nd place was The Lead with Jake Tapper, CNN's highest rated show. According to a Fox News article on the subject, Fox & Friends averaged 1.8 million viewers, topping CNN's New Day and MSNBC's Morning Joe combined. The same Fox News article said that the Fox Business Network also had its highest-rated quarter in history and that Fox News finished March as the highest-rated network in cable for the 45th consecutive month. According to the Los Angeles Times on August 19, 2020: "Fox News Channel had six of last week's 11 highest-rated prime-time programs to finish first in the network ratings race for the third time since June" 2020. A Morning Consult survey the week after Election Day 2020 showed 30 percent of Republicans in the United States had an unfavorable opinion of Fox News, while 54 percent of Republicans viewed the network favorably, compared to 67 percent before the election. A McClatchy news story suggested criticism from Donald Trump as a major reason, as well as the network's early calling of Arizona for Joe Biden, and later joining other networks in declaring Biden the winner of the 2020 election. Ratings were also down for Fox News. Although it remained ahead of other networks overall, its morning show fell out of first place for the first time since 2001. Trump recommended OANN, which was gaining viewers. Newsmax was also increasing in popularity. Following a decline in ratings after the 2020 U.S. presidential election, in 2021, Fox News regained its lead in cable news ratings ahead of CNN and MSNBC. As indicated by a 2013 New York Times article, based on Nielsen statistics, Fox appears to have a mostly aged demographic. In March 2024, Fox was the most watched news network in total day and prime time viewers in primetime, with 2.135 million/1.306 million viewers respectively, compared to MSNBC with A25-54 demo, 1.307 million in primetime and 830,000 in day viewers, and CNN with 601,000 in primetime and 462,000 in day viewers. In the Adults age 25-54 category, Fox also leads with 246,000 in primetime and 158,000 in day viewers, followed by MSNBC with 133,000 viewers in primetime and 86,000 viewers in day, and CNN with 124,000 viewers in primetime and 85,000 in day viewers. According to the same Nielsen analysis, MSNBC is the second most watched news network. In 2008, in the 25–54 age group, Fox News had an average of 557,000 viewers, but dropped to 379,000 in 2013 while increasing its overall audience from 1.89 million in 2010 to 2.02 million in 2013. The median age of a prime-time viewer was 68 as of 2015[update]. A 2019 Pew Research Center survey showed that among those who named Fox News as their main source for political news, 69% are aged 50 or older. According to a 2013 Gallup poll, 94% of Fox viewers "either identify as or lean Republican". The 2019 Pew survey showed that among people who named Fox News as their main source for political and election news, 93% identify as Republicans. Among the top eight political news sources named by at least 2% of American adults, the results show Fox News and MSNBC as the two news channels with the most partisan audiences. Slogan Fox News Channel originally used the slogan "Fair and Balanced", which was coined by network co-founder Roger Ailes while the network was being established. The New York Times described the slogan as being a "blunt signal that Fox News planned to counteract what Mr. Ailes and many others viewed as a liberal bias ingrained in television coverage by establishment news networks". In a 2013 interview with Peter Robinson of the Hoover Institution, Rupert Murdoch defended the company's "Fair and Balanced" slogan, saying, "In fact, you'll find just as many Democrats as Republicans on and so on". In August 2003, Fox News sued comedian Al Franken over his use of the slogan as a subtitle for his book, Lies and the Lying Liars Who Tell Them: A Fair and Balanced Look at the Right, which is critical of Fox News Channel. The lawsuit was dropped three days later, after Judge Denny Chin refused its request for an injunction. In his decision, Chin ruled the case was "wholly without merit, both factually and legally". He went on to suggest that Fox News' trademark on the phrase "fair and balanced" could be invalid. In December 2003, FNC won a legal battle concerning the slogan, when AlterNet filed a cancellation petition with the United States Patent and Trademark Office (USPTO) to have FNC's trademark rescinded as inaccurate. AlterNet included Robert Greenwald's documentary film Outfoxed (2004) as supporting evidence in its case. After losing early motions, AlterNet withdrew its petition; the USPTO dismissed the case. In 2008, FNC used the slogan "We Report, You Decide", referring to "You Decide 2008" (FNC's original slogan for its coverage of election issues). In August 2016, Fox News Channel began to quietly phase out the "Fair and Balanced" slogan in favor of "Most Watched, Most Trusted"; when these changes were reported in June 2017 by Gabriel Sherman (a writer who had written a biography on Ailes), a network executive said the change "has nothing to do with programming or editorial decisions". It was speculated by media outlets that Fox News Channel was wishing to distance itself from Ailes' tenure at the network. In March 2018, the network introduced a new ad campaign, Real News. Real Honest Opinion. The ad campaign is intended to promote the network's opinion-based programming and counter perceptions surrounding "fake news". In mid-November 2020, following the election, Fox News began to use the slogan "Standing Up For What's Right" to promote its primetime lineup. Content Fox News provided extensive coverage of the 2012 Benghazi attack, which host Sean Hannity described in December 2012 as "the story that the mainstream media ignores" and "obviously, a cover-up. And we will get to the bottom of it." Programming analysis by media watchdog Media Matters, which has declared a "War on Fox News", found that during the twenty months following the Benghazi attacks, FNC ran 1,098 segments on the issue, including: Over nearly four years after the Benghazi attack, there were ten official investigations, including six by Republican-controlled House committees. None of the investigations found any evidence of scandal, cover-up or lying by Obama administration officials. From 2015 into 2018, Fox News broadcast extensive coverage of an alleged scandal surrounding the sale of Uranium One to Russian interests, which host Sean Hannity characterized as "one of the biggest scandals in American history". According to Media Matters, the Fox News coverage extended throughout the programming day, with particular emphasis by Hannity. The network promoted an ultimately unfounded narrative asserting that, as Secretary of State, Hillary Clinton personally approved the Uranium One sale in exchange for $145 million in bribes paid to the Clinton Foundation. Donald Trump repeated these allegations as a candidate and as president. No evidence of wrongdoing by Clinton had been found after four years of allegations, an FBI investigation, and the 2017 appointment of a Federal attorney to evaluate the investigation. In November 2017, Fox News host Shepard Smith concisely debunked the alleged scandal, infuriating viewers who suggested he should work for CNN or MSNBC. Hannity later called Smith "clueless", while Smith stated: "I get it, that some of our opinion programming is there strictly to be entertaining. I get that. I don't work there. I wouldn't work there." Fox News has been described as conservative media, and as providing biased reporting in favor of conservative political positions, the Republican Party, and President Donald Trump. Political scientist Jonathan Bernstein described Fox News as an expanded part of the Republican Party. Political scientists Matt Grossmann and David A. Hopkins wrote that Fox News helped "Republicans communicate with their base and spread their ideas, and they have been effective in mobilizing voters to participate in midterm elections (as in 2010 and 2014)." Prior to 2000, Fox News lacked an ideological tilt, and had more Democrats watch the channel than Republicans. During the 2004 United States presidential election, Fox News was markedly more hostile in its coverage of Democratic presidential nominee John Kerry, and distinguished itself among cable news outlets for heavy coverage of the Swift Boat smear campaign against Kerry. During President Obama's first term in office, Fox News helped launch and amplify the Tea Party movement, a conservative movement within the Republican Party that organized protests against Obama and his policies. In the 2004 documentary Outfoxed, four people identified as former employees said that Fox News made them "slant the news in favor of conservatives". Fox News said that the film misrepresented the employment of these employees. During the Republican primaries, Fox News was perceived as trying to prevent Trump from clinching the nomination. Under Trump's presidency, Fox News remade itself into his image, as hardly any criticism of Trump could be heard on Fox News' prime-time shows. In Fox News' news reporting, the network dedicated far more coverage to Hillary Clinton-related stories, which critics argued was intended to deflect attention from the investigation into Russian interference in the 2016 United States elections. Trump provided significant access to Fox News during his presidency, giving 19 interviews to the channel while only 6 in total to other news channels by November 2017; The New York Times described Trump's Fox News interviews as "softball interviews" and some of the interviewers' interview styles as "fawning". In July 2018, The Economist has described the network's coverage of Trump's presidency as "reliably fawning". From 2015 to 2017, the Fox News prime-time lineup changed from being skeptical and questioning of Trump to a "Trump safe space, with a dose of Bannonist populism once considered on the fringe". The Fox News website has also become more extreme in its rhetoric since Trump's election; according to Columbia University's Tow Center for Digital Journalism, the Fox News website has "gone a little Breitbart" over time. At the start of 2018, Fox News mostly ignored high-profile scandals in the Trump administration which received ample coverage in other national media outlets, such as White House Staff Secretary Rob Porter's resignation amid domestic abuse allegations, the downgrading of Jared Kushner's security clearance, and the existence of a non-disclosure agreement between Trump and the porn star Stormy Daniels. In March 2019, Jane Mayer reported in The New Yorker that Fox News.com reporter Diana Falzone had the story of the Stormy Daniels–Donald Trump scandal before the 2016 election, but that Fox News executive Ken LaCorte told her: "Good reporting, kiddo. But Rupert [Murdoch] wants Donald Trump to win. So just let it go." The story was killed; LaCorte denied making the statement to Falzone, but conceded: "I was the person who made the call. I didn't run it upstairs to Roger Ailes or others. ... I didn't do it to protect Donald Trump." She added that "[Falzone] had put up a story that just wasn't anywhere close to being something I was comfortable publishing." Nik Richie, who claimed to be one of the sources for the story, called LaCorte's account "complete bullshit", adding that "Fox News was culpable. I voted for Trump, and I like Fox, but they did their own 'catch and kill' on the story to protect him." A 2008 study found Fox News gave disproportionate attention to polls suggesting low approval for President Bill Clinton. A 2009 study found Fox News was less likely to pick up stories that reflected well on Democrats, and more likely to pick up stories that reflected well on Republicans. A 2010 study comparing Fox News Channel's Special Report With Brit Hume and NBC's Nightly News coverage of the wars in Iraq and Afghanistan during 2005 concluded "Fox News was much more sympathetic to the administration than NBC", suggesting "if scholars continue to find evidence of a partisan or ideological bias at FNC ... they should consider Fox as alternative, rather than mainstream, media". Research finds that Fox News increases Republican vote shares and makes Republican politicians more partisan. A 2007 study, using the introduction of Fox News into local markets (1996–2000) as an instrumental variable, found that in the 2000 presidential election "Republicans gained 0.4 to 0.7 percentage points in the towns that broadcast Fox News", suggesting "Fox News convinced 3 to 28 percent of its viewers to vote Republican, depending on the audience measure". These results were confirmed by a 2015 study. A 2014 study, using the same instrumental variable, found congressional "representatives become less supportive of President Clinton in districts where Fox News begins broadcasting than similar representatives in similar districts where Fox News was not broadcast." Another 2014 paper found Fox News viewing increased Republican vote shares among voters who identified as Republican or independent. A 2017 study, using channel positions as an instrumental variable, found "Fox News increases Republican vote shares by 0.3 points among viewers induced into watching 2.5 additional minutes per week by variation in position." This study used a different methodology for a later period and found an ever bigger effect and impact, leading Matthew Yglesias to write in the Political Communication academic journal that they "suggest that conventional wisdom may be greatly underestimating the significance of Fox as a factor in American politics." Fox News publicly denies it is biased, with Murdoch and Ailes saying to have included Murdoch's statement that Fox has "given room to both sides, whereas only one side had it before". In June 2009, Fox News host Chris Wallace said: "I think we are the counter-weight [to NBC News] ... they have a liberal agenda, and we tell the other side of the story." In 2004, Robert Greenwald's documentary film Outfoxed: Rupert Murdoch's War on Journalism argued Fox News had a conservative bias and featured clips from Fox News and internal memos from editorial vice president John Moody directing Fox News staff on how to report certain subjects. Fox News' most popular programs such as Sean Hannity and Tucker Carlson do not make any claims to be accurate or fact-checked, and have little to no distinction between news and commentary. A leaked memo from Fox News vice president Bill Sammon to news staff at the height of the health care reform in the United States debate has been cited as an example of the pro-Republican bias of Fox News. His memo asked the staff to "use the term 'government-run health insurance,' or, when brevity is a concern, 'government option,' whenever possible". The memo was sent shortly after Republican pollster Frank Luntz advised Sean Hannity on his Fox show: "If you call it a public option, the American people are split. If you call it the government option, the public is overwhelmingly against it." Surveys suggest Fox News is widely perceived to be ideological. A 2009 Pew survey found Fox News is viewed as the most ideological channel in America, with 47 percent of those surveyed said Fox News is "mostly conservative", 14 percent said "mostly liberal" and 24 percent said "neither". In comparison, MSNBC had 36 percent identify it as "mostly liberal", 11 percent as "mostly conservative" and 27 percent as "neither". CNN had 37 percent describe it as "mostly liberal", 11 percent as "mostly conservative" and 33 percent as "neither". A 2004 Pew Research Center survey found FNC was cited (unprompted) by 69 percent of national journalists as a conservative news organization. A Rasmussen poll found 31 percent of Americans felt Fox News had a conservative bias, and 15 percent that it had a liberal bias. It found 36 percent believed Fox News delivers news with neither a conservative or liberal bias, compared with 37 percent who said NPR delivers news with no conservative or liberal bias and 32 percent who said the same of CNN. David Carr, media critic for The New York Times, praised the 2012 United States presidential election results coverage on Fox News for the network's response to Republican adviser and Fox News contributor Karl Rove challenging its call that Barack Obama would win Ohio and the election. Fox's prediction was correct. Carr wrote: "Over many months, Fox lulled its conservative base with agitprop: that President Obama was a clear failure, that a majority of Americans saw [Mitt] Romney as a good alternative in hard times, and that polls showing otherwise were politically motivated and not to be believed. But on Tuesday night, the people in charge of Fox News were confronted with a stark choice after it became clear that Mr. Romney had fallen short: was Fox, first and foremost, a place for advocacy or a place for news? In this moment, at least, Fox chose news." A May 2017 study conducted by Harvard University's Shorenstein Center on Media, Politics and Public Policy examined coverage of Trump's first 100 days in office by several major mainstream media outlets including Fox. It found Trump received 80% negative coverage from the overall media, and received the least negative coverage on Fox – 52% negative and 48% positive. On March 14, 2017, Andrew Napolitano, a Fox News commentator, claimed on Fox & Friends that British intelligence agency GCHQ had wiretapped Trump on behalf of Barack Obama during the 2016 United States presidential election. On March 16, 2017, White House spokesman Sean Spicer repeated the claim. When Trump was questioned about the claim at a news conference, he said "All we did was quote a certain very talented legal mind who was the one responsible for saying that on television. I didn't make an opinion on it." On March 17, 2017, Shepard Smith, a Fox News anchor, admitted the network had no evidence that Trump was under surveillance. British officials said the White House was backing off the claim. Napolitano was later suspended by Fox News for making the claim. In June 2018, Fox News executives instructed producers to head off inappropriate remarks made on the shows aired by the network by hosts and commentators. The instructions came after a number of Fox News hosts and guests made incendiary comments about the Trump administration's policy of separating migrant children from their parents. Fox News host Laura Ingraham had likened the child detention centers that the children were in to "summer camps". Guest Corey Lewandowski mocked the story of a 10-year-old child with Down syndrome being separated from her mother; the Fox News host did not address Lewandowski's statement. Guest Ann Coulter falsely claimed that the separated children were "child actors"; the Fox News host did not challenge her claim. In a segment on Trump's alleged use of racial dog whistles, one Fox News contributor told an African-American whom he was debating: "You're out of your cotton-picking mind." According to the 2016 book Asymmetric Politics by political scientists Matt Grossmann and David A. Hopkins, "Fox News tends to raise the profile of scandals and controversies involving Democrats that receive scant attention in other media, such as the relationship between Barack Obama and William Ayers ... Hillary Clinton's role in the fatal 2012 attacks on the American consulate in Benghazi, Libya; the gun-running scandal known as 'Fast and Furious'; the business practices of federal loan guarantee recipient Solyndra; the past activism of Obama White House operative Van Jones; the 2004 attacks on John Kerry by the Swift Boat Veterans for Truth; the controversial sermons of Obama's Chicago pastor Jeremiah Wright; the filming of undercover videos of supposed wrongdoing by the liberal activist group ACORN; and the 'war on Christmas' supposedly waged every December by secular, multicultural liberals." In October 2018, Fox News ran laudatory coverage of a meeting between Trump-supporting rapper Kanye West and President Trump in the Oval Office. Fox News had previously run negative coverage of rappers and their involvement with Democratic politicians and causes, such as when Fox News ran headlines describing conscious hip-hop artist Common as "vile" and a "cop-killer rapper", and when Fox News ran negative coverage of Kanye West before he became a Trump supporter. On November 4, 2018, Trump's website, DonaldJTrump.com, announced in a press release that Fox News host Sean Hannity would make a "special guest appearance" with Trump at a midterm campaign rally the following night in Cape Girardeau, Missouri. The following morning, Hannity tweeted "To be clear, I will not be on stage campaigning with the President." Hannity appeared at the president's lectern on stage at the rally, immediately mocking the "fake news" at the back of the auditorium, Fox News reporters among them. Several Fox News employees expressed outrage at Hannity's actions, with one stating that "a new line was crossed". Hannity later asserted that his action was not pre-planned, and Fox News stated it "does not condone any talent participating in campaign events". Fox News host Jeanine Pirro also appeared on stage with Trump at the rally. The Trump press release was later removed from Trump's website. Fox News released a poll of registered voters, jointly conducted by two polling organizations, on June 16, 2019. The poll found some unfavorable results for Trump, including a record high 50% thought the Trump campaign had coordinated with the Russian government, and 50% thought he should be impeached – 43% saying he should also be removed from office – while 48% said they did not favor impeachment. The next morning on Fox & Friends First, host Heather Childers twice misrepresented the poll results, stating "a new Fox News poll shows most voters don't want impeachment" and "at least half of U.S. voters do not think President Trump should be impeached," while the on-screen display of the actual poll question was also incorrect. Later that morning on America's Newsroom, the on-screen display showed the correct poll question and results, but highlighted the 48% of respondents who opposed impeachment rather than the 50% who supported it (the latter being broken-out into two figures). As host Bill Hemmer drew guest Byron York's attention to the 48% opposed figure, they did not discuss the 50% support figure, while the on-screen chyron read: "Fox News Poll: 43% Support Trump's Impeachment and Removal, 48% Oppose." Later that day, Trump tweeted: "@FoxNews Polls are always bad for me...Something weird going on at Fox." In April 2017, it became known that former Obama administration national security advisor Susan Rice sought the unmasking of Trump associates who were unidentified in intelligence reports, notably Trump's incoming national security advisor Michael Flynn, during the presidential transition. In May 2020, acting Director of National Intelligence Richard Grenell, a Trump loyalist, declassified a list of Obama administration officials who had also requested unmasking of Trump associates, which was subsequently publicly released by Republican senators. That month, attorney general Bill Barr appointed federal prosecutor John Bash to examine the unmaskings. Fox News primetime hosts declared the unmaskings a "domestic spying operation" for which the Obama administration was "exposed" in the "biggest abuse of power" in American history. The Bash inquiry closed months later with no findings of substantive wrongdoing. However, certain Fox personalities have not had as much of a favorable reception from Trump: news anchors Shepard Smith (who retired from Fox in 2019) and Chris Wallace have been criticized by Trump for allegedly being adversarial, alongside Fox analyst Andrew Napolitano, who said Trump's actions in the Trump–Ukraine scandal were "both criminal and impeachable behavior". Trump was also critical of the network hiring former DNC chair Donna Brazile, in 2019. The relationship between Trump and Fox News, as well as other Rupert Murdoch-controlled outlets, soured following the 2020 United States presidential election, as Trump refused to concede that Joe Biden had been elected President-elect. This negative tonal shift led to increased viewership of Newsmax and One America News among Trump and his supporters due to their increased antipathy towards Fox; and as a result, Fox released promotional videos of their opinion hosts disputing the election results, promoting a Trump-affiliated conspiracy theory about voter fraud. By one measure, Newsmax saw a 497% spike in viewership, while Fox News saw a 38% decline. Writing for the Poynter Institute for Media Studies in February 2021, senior media writer Tom Jones argued that the primary distinction between Fox News and MSNBC is not right bias vs. left bias, but rather that much of the content on Fox News, especially during its primetime programs, "is not based in truth". The Tampa Bay Times reported in August 2021 that it had reviewed four months of emails indicating Fox News producers had coordinated with aides of Florida governor Ron DeSantis to promote his political prospects by inviting him for frequent network appearances, exchanging talking points and, in one case, helping him to stage an exclusive news event. In February 2024, Alan Rosenblatt of Johns Hopkins University said that Fox News "is an entertainment company that has a news division, not a news company", adding that it "not only does not provide that distinction, it goes out of its way to make it difficult to see the difference. They make their opinion programs look like news programs, and they incorporate enough opinion content on their news programs to further that deception." In early 2024, Fox News host Jesse Watters promoted a conspiracy theory involving Taylor Swift, Travis Kelce, and the Democratic Party in hopes of influencing voters ahead of the U.S. presidential primary season. Fox News has published headlines accusing the English Wikipedia of having a left-wing and socialist bias. On October 30, 2017, when special counsel Robert Mueller indicted Paul Manafort and Rick Gates, and revealed George Papadopoulos had pleaded guilty (all of whom were involved in the Trump 2016 campaign), this was the focus of most media's coverage, except Fox News'. Hosts and guests on Fox News called for Mueller to be fired. Sean Hannity and Tucker Carlson focused their shows on unsubstantiated allegations that Clinton sold uranium to Russia in exchange for donations to the Clinton Foundation and on the Clinton campaign's role in funding the Steele dossier. Hannity asserted: "The very thing they are accusing President Trump of doing, they did it themselves." During the segment, Hannity mistakenly referred to Clinton as President Clinton. Fox News dedicated extensive coverage to the uranium story, which Democrats said was an attempt to distract from Mueller's intensifying investigation. CNN described the coverage as "a tour de force in deflection and dismissal". On October 31, CNN reported Fox News employees were dissatisfied with their outlet's coverage of the Russia investigation, with employees calling it an "embarrassment", "laughable", and saying it "does the viewer a huge disservice and further divides the country" and that it is "another blow to journalists at Fox who come in every day wanting to cover the news in a fair and objective way". When the investigation by special counsel Robert Mueller into Russian interference in the 2016 presidential election intensified in October 2017, the focus of Fox News coverage turned "what they see as the scandal and wrongdoing of President Trump's political opponents. In reports like these, Bill and Hillary Clinton are prominent and recurring characters because they are considered the real conspirators working with the Russians to undermine American democracy." Paul Waldman of The Washington Post described the coverage as "No puppet. You're the puppet", saying it was a "careful, coordinated, and comprehensive strategy" to distract from Mueller's investigation. German Lopes of Vox said Fox News' coverage has reached "levels of self-parody" as it dedicated coverage to low-key stories, such as a controversial Newsweek op-ed and hamburger emojis, while other networks had wall-to-wall coverage of Mueller's indictments. A FiveThirtyEight analysis of Russia-related media coverage in cable news found most mentions of Russia on Fox News were spoken in close proximity to "uranium" and "dossier". On November 1, 2017, Vox analyzed the transcripts of Fox News, CNN and MSNBC, and found Fox News "was unable to talk about the Mueller investigation without bringing up Hillary Clinton", "talked significantly less about George Papadopoulos—the Trump campaign adviser whose plea deal with Mueller provides the most explicit evidence thus far that the campaign knew of the Russian government's efforts to help Trump—than its competitors", and "repeatedly called Mueller's credibility into question". In December 2017, Fox News escalated its attacks on the Mueller investigation, with hosts and guest commentators suggesting the investigation amounted to a coup. Guest co-host Kevin Jackson referred to a right-wing conspiracy theory claiming Strzok's messages are evidence of a plot by FBI agents to assassinate Trump, a claim which the other Fox co-hosts quickly said is not supported by any credible evidence. Fox News host Jeanine Pirro called the Mueller investigation team a "criminal cabal" and said the team ought to be arrested. Other Fox News figures referred to the investigation as "corrupt", "crooked", and "illegitimate", and likened the FBI to the KGB, the Soviet-era spy organization that routinely tortured and summarily executed people. Political scientists and scholars of coups described the Fox News rhetoric as scary and dangerous. Experts on coups rejected that the Mueller investigation amounted to a coup; rather, the Fox News rhetoric was dangerous to democracy and mirrored the kind of rhetoric that occurs before purges. A number of observers argued the Fox News rhetoric was intended to discredit the Mueller investigation and sway President Donald Trump to fire Mueller. In August 2018, Fox News was criticized for giving more prominent coverage of a murder committed by an undocumented immigrant than the convictions of Donald Trump's former campaign manager, Paul Manafort, and his long-term personal attorney, Michael Cohen. At the same time, most other national mainstream media gave wall-to-wall coverage of the convictions. Fox News hosts Dana Perrino and Jason Chaffetz argued that voters care far more about the murder than the convictions of the President's former top aides, and hosts Tucker Carlson and Sean Hannity downplayed the convictions. In November 2017, following the 2017 New York City truck attack wherein a terrorist shouted "Allahu Akbar", Fox News distorted a statement by Jake Tapper to make it appear as if he had said "Allahu Akbar" can be used under the most "beautiful circumstances". Fox News omitted that Tapper had said the use of "Allahu Akbar" in the terrorist attack was not one of these beautiful circumstances. A headline on FoxNews.com was preceded by a tag reading "OUTRAGEOUS". The Fox News Twitter account distorted the statement further, saying "Jake Tapper Says 'Allahu Akbar' Is 'Beautiful' Right After NYC Terror Attack" in a tweet that was later deleted. Tapper chastised Fox News for choosing to "deliberately lie" and said "there was a time when one could tell the difference between Fox and the nutjobs at Infowars. It's getting tougher and tougher. Lies are lies." In 2009, Tapper had come to the defense of Fox News while he was a White House correspondent for ABC News, after the Obama administration claimed that the network was not a legitimate news organization. Fox News guest host Jason Chaffetz apologized to Tapper for misrepresenting his statement. After Fox News had deleted the tweet, Sean Hannity repeated the misrepresentation and called Tapper "liberal fake news CNN's fake Jake Tapper" and mocked his ratings. In July 2017, a report by Fox & Friends falsely said The New York Times had disclosed intelligence in one of its stories and that this intelligence disclosure helped Abu Bakr al-Baghdadi, the leader of the Islamic State, to evade capture. The report cited an inaccurate assertion by Gen. Tony Thomas, the head of the United States Special Operations Command, that a major newspaper had disclosed the intelligence. Fox News said it was The New York Times, repeatedly running the chyron "NYT Foils U.S. Attempt To Take Out Al-Bahgdadi". Pete Hegseth, one of the show's hosts, criticized the "failing New York Times". President Donald Trump tweeted about the Fox & Friends report shortly after it first aired, saying "The Failing New York Times foiled U.S. attempt to kill the single most wanted terrorist, Al-Baghdadi. Their sick agenda over National Security." Fox News later updated the story, but without apologizing to The New York Times or responding directly to the inaccuracies. In a Washington Post column, Erik Wemple said Chris Wallace had covered The New York Times story himself on Fox News Sunday, adding: "Here's another case of the differing standards between Fox News's opinion operation", which has given "a state-run vibe on all matters related to Trump", compared to Fox News's news operation, which has provided "mostly sane coverage". Fox News has often been described as a major platform for climate change denial.[a] A 2011 study by Lauren Feldman and Anthony Leiserowitz found Fox News "takes a more dismissive tone toward climate change than CNN and MSNBC". A 2008 study found Fox News emphasized the scientific uncertainty of climate change more than CNN, was less likely to say climate change was real, and more likely to interview climate change skeptics. Leaked emails showed that in 2009 Bill Sammon, the Fox News Washington managing editor, instructed Fox News journalists to dispute the scientific consensus on climate change and "refrain from asserting that the planet has warmed (or cooled) in any given period without IMMEDIATELY pointing out that such theories are based upon data that critics have called into question." According to climate scientist Michael E. Mann, Fox News "has constructed an alternative universe where the laws of physics no longer apply, where the greenhouse effect is a myth, and where climate change is a hoax, the product of a massive conspiracy among scientists, who somehow have gotten the polar bears, glaciers, sea levels, superstorms, and megadroughts to play along." According to James Lawrence Powell's 2011 study of the climate science denial movement, Fox News provides "the deniers with a platform to say whatever they like without fear of contradiction." Fox News employs Steve Milloy, a prominent climate change denier with close financial and organizational ties to oil companies, as a contributor. In his columns about climate change for FoxNews.com, Fox News has failed to disclose his substantial funding from oil companies. In 2011, the hosts of Fox & Friends described climate change as "unproven science", a "disputed fact", and criticized the Department of Education for working together with the children's network Nickelodeon to teach children about climate change. In 2001, Sean Hannity described the scientific consensus on climate change as "phony science from the left". In 2004, he falsely alleged that "scientists still can't agree on whether the global warming is scientific fact or fiction". In 2010, Hannity said the so-called "Climategate" – the leaking of e-mails by climate scientist that climate change skeptics claimed demonstrated scientific misconduct but which all subsequent enquiries have found no evidence of misconduct or wrongdoing – a "scandal" that "exposed global warming as a myth cooked up by alarmists". Hannity frequently invites contrarian fringe scientists and critics of climate change to his shows. In 2019, a widely shared Fox News news report falsely claimed that new climate science research showed that the Earth might be heading to a new Ice Age; the author of the study that Fox News cited said that Fox News "utterly misrepresents our research" and the study did not in any way suggest that Earth was heading to an Ice Age. Fox News later corrected the story. Shepard Smith drew attention for being one of few voices formerly on Fox News to forcefully state that climate change is real, that human activities are a primary contributor to it and that there is a scientific consensus on the issue. His acceptance of the scientific consensus on climate change drew criticism from Fox News viewers and conservatives. Smith left Fox News in October 2019. In a 2021 interview with Christiane Amanpour on her eponymous show on CNN, he stated that his presence on Fox had become "untenable" due to the "falsehoods" and "lies" intentionally spread on the network's opinion shows. On May 16, 2017, a day when other news organizations were extensively covering Donald Trump's revelation of classified information to Russia, Fox News ran a lead story about a private investigator's uncorroborated claims about the murder of Seth Rich, a DNC staffer. The private investigator said he had uncovered evidence that Rich was in contact with WikiLeaks and law enforcement were covering it up. The killing of Rich has given rise to conspiracy theories in right-wing circles that Hillary Clinton and the Democratic Party had Seth Rich killed allegedly because he was the source of the DNC leaks. U.S. intelligence agencies determined Russia was the source of the leaks. In reporting the investigator's claims, the Fox News report reignited right-wing conspiracy theories about the killing. The Fox News story fell apart within hours. Other news organizations quickly revealed the investigator was a Donald Trump supporter and had according to NBC News "developed a reputation for making outlandish claims, such as one appearance on Fox News in 2007 in which he warned that underground networks of pink pistol-toting lesbian gangs were raping young women." The family of Seth Rich, the Washington D.C. police department, the Washington D.C. mayor's office, the FBI, and law enforcement sources familiar with the case rebuked the investigator's claims. Rich's relatives said: "We are a family who is committed to facts, not fake evidence that surfaces every few months to fill the void and distract law enforcement and the general public from finding Seth's murderers." The spokesperson for the family criticized Fox News for its reporting, alleging the outlet was motivated by a desire to deflect attention from the Trump-Russia story: "I think there's a very special place in hell for people that would use the memory of a murder victim in order to pursue a political agenda." The family has called for retractions and apologies from Fox News for the inaccurate reporting. Over the course of the day, Fox News altered the contents of the story and the headline, but did not issue corrections. When CNN contacted the private investigator later that day, the investigator said he had no evidence that Rich had contacted WikiLeaks. The investigator claimed he only learned about the possible existence of the evidence from a Fox News reporter. Fox News did not respond to inquiries by CNN, and the Washington Post. Fox News later on May 23, seven days after the story was published, retracted its original report, saying the original report did not meet its standards. Nicole Hemmer, then assistant professor at the Miller Center of Public Affairs, wrote that the promotion of the conspiracy theory demonstrated how Fox News was "remaking itself in the image of fringe media in the age of Trump, blurring the lines between real and fake news." Max Boot of the Council on Foreign Relations said while intent behind Fox News, as a counterweight to the liberal media was laudable, the culmination of those efforts have been to create an alternative news source that promotes hoaxes and myths, of which the promotion of the Seth Rich conspiracy is an example. Fox News was also criticized by conservative outlets, such as The Weekly Standard, National Review, and conservative columnists, such as Jennifer Rubin, Michael Gerson, and John Podhoretz. Rich's parents, Joel and Mary Rich, sued Fox News for the emotional distress it had caused them by its false reporting. In 2020, Fox News settled with Rich family, making a payment that was not officially disclosed but which was reported to be in the seven figures. Although the settlement had been agreed to earlier in the year, Fox News arranged to delay the public announcement until after the 2020 presidential election. Fox News hosts and contributors defended Trump's remarks that "many sides" were to blame for violence at a gathering of hundreds of white nationalists in Charlottesville, Virginia. Some criticized Trump. In a press conference on August 15, Trump used the term "alt-left" to describe counterprotesters at the white supremacist rally, a term which had been used in Fox News' coverage of the white supremacist rally. Several of Trump's comments at the press conference mirrored those appearing earlier on Fox News. According to Dylan Byers of CNN, Fox News' coverage on the day of the press conference "was heavy with "whataboutism". The average Fox viewer was likely left with the impression that the media's criticism of Trump and leftist protestors' toppling of some Confederate statues were far greater threats to America than white supremacism or the president's apparent defense of bigotry." Byers wrote "it showed that if Fox News has a line when it comes to Trump's presidency, it was not crossed on Tuesday." During Glenn Beck's tenure at Fox News, he became one of the most high-profile proponents of conspiracy theories about George Soros, a Jewish Hungarian-American businessman and philanthropist known for his donations to American liberal political causes. Beck regularly described Soros as a "puppet-master" and used common anti-Semitic tropes to describe Soros and his activities. In a 2010 three-part series, Beck depicted George Soros as a cartoonish villain trying to "form a shadow government, using humanitarian aid as a cover", and that Soros wanted a one-world government. Beck promoted the false and anti-Semitic conspiracy theory that Soros was a Nazi collaborator as a 14-year-old in Nazi-occupied Hungary. Beck also characterized Soros's mother as a "wildly anti-Semitic" Nazi collaborator. According to The Washington Post: "Beck's series was largely considered obscene and delusional, if not outright anti-Semitic", but Beck's conspiracy theory became common on the right-wing of American politics. Amid criticism of Beck's false smears, Fox News defended Beck, stating "information regarding Mr. Soros's experiences growing up were taken directly from his writings and from interviews given by him to the media, and no negative opinion was offered as to his actions as a child." Roger Ailes, then-head of Fox News, dismissed criticism levied at Beck by hundreds of rabbis, saying that they were "left-wing rabbis who basically don't think that anybody can ever use the word, Holocaust, on the air." During the first few weeks of the COVID-19 pandemic in the United States, Fox News was considerably more likely than other mainstream news outlets to promote misinformation about COVID-19. The network promoted the narrative that the emergency response to the pandemic was politically motivated or otherwise unwarranted, with Sean Hannity explicitly calling it a "hoax" (he later denied doing so) and other hosts downplaying it. This coverage was consistent with the messaging of Trump at the time. Only in mid March did the network change the tone of its coverage, after President Trump declared a national emergency. At the same time that Fox News commentators downplayed the threat of the virus in public, Fox's management and the Murdoch family took a broad range of internal measures to protect themselves and their employees against it. Sean Hannity and Laura Ingraham, two of Fox News's primetime hosts, promoted use of the drug hydroxychloroquine for the treatment of COVID-19, an off-label usage which at the time was supported only by anecdotal evidence, after it was touted by Trump as a possible cure. Fox News promoted a conspiracy theory that coronavirus death toll numbers were inflated with people who would have died anyway from preexisting conditions. This was disputed by White House coronavirus task force members Anthony Fauci and Deborah Birx, with Fauci describing conspiracy theories as "nothing but distractions" during public health crises. Later in the pandemic, Hannity, Ingraham and Carlson promoted the use of livestock dewormer ivermectin as a possible COVID-19 treatment. Studies have linked trust in Fox News, as well as viewership of Fox News, with fewer preventive behaviors and more risky behaviors related to COVID-19. Once a COVID-19 vaccine became widely available, Fox News consistently questioned the efficacy and safety of the vaccine, celebrated evidence-free skepticism, and blasted attempts to promote vaccinations. More than 90% of Fox Corporation's full-time employees had been fully vaccinated by September 2021. After Trump's defeat in the 2020 presidential election, Fox News host Jeanine Pirro promoted baseless allegations on her program that voting machine company Smartmatic and its competitor Dominion Voting Systems had conspired to rig the election against Trump. Hosts Lou Dobbs and Maria Bartiromo also promoted the allegations on their programs on sister network Fox Business. In December 2020, Smartmatic sent a letter to Fox News demanding retractions and threatening legal action, specifying that retractions "must be published on multiple occasions" so as to "match the attention and audience targeted with the original defamatory publications." Days later, each of the three programs aired the same three-minute video segment consisting of an interview with an election technology expert who refuted the allegations promoted by the hosts, responding to questions from an unseen and unidentified man. None of the three hosts personally issued retractions. Smartmatic filed a $2.7 billion defamation suit against the network, the three hosts, Powell and Trump attorney Rudy Giuliani in February 2021. In an April 2021 court brief seeking dismissal of the suit, Fox attorney Paul Clement argued that the network was simply "reporting allegations made by a sitting President and his lawyers." A New York State Supreme Court judge ruled in March 2022 that the suit could proceed, though he dismissed allegations against Sidney Powell and Pirro, and some claims against Giuliani. The judge allowed allegations against Bartiromo and Dobbs to stand. The New York Supreme Court, Appellate Division unanimously rejected a Fox News bid to dismiss the Smartmatic suit in February 2023. The court reinstated defamation allegations against Giuliani and Pirro. In December 2020, Dominion Voting Systems sent a similar letter demanding retractions to Trump attorney Sidney Powell, who had promoted the allegations on Fox programs. On March 26, 2021, Dominion filed a $1.6 billion defamation lawsuit against Fox News, alleging that Fox and some of its pundits spread conspiracy theories about Dominion, and allowed guests to make false statements about the company. On May 18, 2021, Fox News filed a motion to dismiss the Dominion Voting Systems lawsuit, asserting a First Amendment right "to inform the public about newsworthy allegations of paramount public concern." The motion to dismiss was denied on December 16, 2021, by a Delaware Superior Court judge. In addition to Bartiromo, Dobbs, and Pirro, the suit also names primetime hosts Tucker Carlson and Sean Hannity. Venezuelan businessman Majed Khalil sued Fox, Dobbs and Powell for $250 million in December 2021, alleging they had falsely implicated him in rigging Dominion and Smartmatic machines. Dobbs and Fox News reached a confidential settlement with Khalil in April 2023. Fox News was the only major network or cable news outlet to not carry the first televised prime time hearing of the January 6 committee live; its regular programming of Tucker Carlson Tonight and Hannity was aired without commercial breaks. During the weeks following the election, Carlson and Hannity often amplified Trump's election falsehoods on their programs; previously disclosed text messages between Hannity and White House press secretary Kayleigh McEnany were presented during the hearing. Hannity told his audience, "Unlike this committee and their cheerleaders in the media mob, we will actually be telling you the truth," while Carlson said, "This is the only hour on an American news channel that won't be covering their propaganda live. They are lying and we are not going to help them do it." In June 2022, a Delaware Superior Court judge again declined to dismiss the Dominion suit against Fox News, and also allowed Dominion to sue the network's corporate parent, Fox Corporation. The judge ruled that Rupert and Lachlan Murdoch may have acted with actual malice because there was a reasonable inference they "either knew Dominion had not manipulated the election or at least recklessly disregarded the truth when they allegedly caused Fox News to propagate its claims about Dominion." He noted a report that Rupert Murdoch spoke with Trump a few days after the election and informed him that he had lost. The New York Times reported in December 2022 that Dominion had acquired communications between Fox News executives and hosts, and between a Fox Corporation employee and the Trump White House, showing they knew that what the network was reporting was untrue. Dominion attorneys said hosts Sean Hannity and Tucker Carlson, and Fox executives, attested to this in sworn depositions. In November 2020, Hannity hosted Sidney Powell, who asserted Dominion machines had been rigged, but said in his deposition, "I did not believe it for one second." A February 2023 Dominion court filing showed Fox News primetime hosts messaging each other to insult and mock Trump advisers, indicating the hosts knew the allegations made by Powell and Giuliani were false. Rupert Murdoch messaged that Trump's voter fraud claims were "really crazy stuff," telling Fox News CEO Suzanne Scott that it was "terrible stuff damaging everybody, I fear." As a January 2021 Georgia runoff election approached that would determine party control of the U.S. Senate, Murdoch told Scott, "Trump will concede eventually and we should concentrate on Georgia, helping any way we can." After the 2016 election, the network developed a cutting-edge system to call elections, which proved very successful during the 2018 midterm elections. The network was the first to call the 2020 Arizona race for Biden, angering many viewers. Washington managing editor Bill Sammon supervised the network's Decision Desk that made the call. Bret Baier and Martha MacCallum, the network's main news anchors, suggested during a high-level conference call that relying solely on data to make the call was inadequate and that viewer reaction should also be considered; MacCallum said, "in a Trump environment, the game is just very, very different." Sammon stood by the 2020 call and was fired by the network after the January 2021 Georgia runoff. In 2023, Rupert Murdoch was deposed and testified that some Fox News commentators were endorsing election fraud claims they knew were false. In February 2023, Fox's internal communications were released, showing that its presenters and senior executives privately doubted Donald Trump's claims of a stolen election. Chairman Rupert Murdoch once described Trump's voter fraud claims as "really crazy stuff", and also said that Trump advisers Rudy Giuliani and Sidney Powell's television appearances were "terrible stuff damaging everybody". One November 2020 exchange showed Tucker Carlson accusing Powell of "lying ... I caught her. It's insane", with Laura Ingraham responding that "Sidney is a complete nut. No one will work with her. Ditto with Rudy". In another exchange that month, Carlson called for Fox journalist Jacqui Heinrich to be "fired" because she fact-checked Trump and said that there was no evidence of voter fraud from Dominion. Carlson said that Heinrich's actions "needs to stop immediately, like tonight. It's measurably hurting the company. The stock price is down", while Heinrich deleted the fact-check the next morning. In March 2023, more of Fox's internal communications were released. One November 2020 communication showed Fox CEO Suzanne Scott criticizing fact-checking, stating that she cannot "keep defending these reporters who don't understand our viewers and how to handle stories ... The audience feels like we crapped on" them, and Fox was losing their audience's "trust and belief" in them. Another December 2020 communication showed Scott responding to Fox presenter Eric Shawn's fact-checking of Donald Trump's false 2020 election claims by demanding that the fact-checking "has to stop now ... This is bad business ... The audience is furious." On March 31, 2023, Delaware Superior Court judge Eric Davis ruled in a summary judgment that it "is CRYSTAL clear that none of the statements relating to Dominion about the 2020 election are true" and ordered for the case to go to trial. On April 18, 2023, Fox News reached a settlement with Dominion just before the trial started, concluding the lawsuit; Fox agreed to pay Dominion $787.5 million, and further stated: "We acknowledge the Court's rulings finding certain claims about Dominion to be false". In April 2021, at least five Fox News and Fox Business personalities amplified a story published by the Daily Mail, a British tabloid, that incorrectly linked a university study to President Joe Biden's climate change agenda, to falsely assert that Americans would be compelled to dramatically reduce their meat consumption to mitigate greenhouse gas emissions caused by flatulence. Fox News aired a graphic detailing the supposed compulsory reductions, falsely indicating the information came from the Agriculture Department, which numerous Republican politicians and commentators tweeted. Fox News anchor John Roberts reported to "say goodbye to your burgers if you want to sign up to the Biden climate agenda." Days later, Roberts acknowledged on air that the story was false. According to analysis by Media Matters, on May 12, 2021, Fox News reported on its website: "Biden resumes border wall construction after promising to halt it". Correspondent Bill Melugin then appeared on Special Report with Bret Baier to report "the U.S. Army Corps of Engineers is actually going to be restarting border wall construction down in the Rio Grande Valley" after "a lot of blowback and pressure from local residents and local politicians." After the Corps of Engineers tweeted a clarification, Melugin deleted a tweet about the story and tweeted an "update" clarifying that a levee wall was being constructed to mitigate damage to flood control systems caused by uncompleted wall construction, and the website story headline was changed to "Biden administration to resume border wall levee construction as crisis worsens." Later on Fox News Primetime, host Brian Kilmeade briefly noted the levee but commented to former Trump advisor Stephen Miller: "They're going to restart building the wall again, Stephen." Fox News host Sean Hannity later broadcast the original Melugin story without any mention of the levee. Media Matters reported in September 2024 that during the Biden presidency Fox News had promoted a false "crime crisis" narrative, particularly directed toward undocumented migrants, which reflected Donald Trump's political rhetoric. The Fox News narrative consisted of reported violent crime anecdotes rather than FBI crime rate statistics showing violent crime had declined significantly since 2020. One Fox host, Ainsley Earhardt, said that even if the FBI data were right, "we're all a little bit more scared than we used to be." Later that month, weeks before the 2024 presidential election, the FBI released crime data for 2023 showing that violent crime had declined 3% from 2022. The report was widely covered by mainstream news outlets that day, though the Fox News coverage was limited to a 28-second segment by evening anchor Bret Baier. He reported "critics say the report is not accurate because it does not include big cities," echoing a false assertion made by Elon Musk and other Trump supporters on social media. Controversies The network has been accused of permitting sexual harassment and racial discrimination by on-air hosts, executives, and employees, paying out millions of dollars in legal settlements. Prominent Fox News figures such as Roger Ailes, Bill O'Reilly and Eric Bolling were fired after many women accused them of sexual harassment. At least four lawsuits alleged Fox News co-president Bill Shine ignored, enabled or concealed Roger Ailes' alleged sexual harassment. Fox News CEO Rupert Murdoch has dismissed the high-profile sexual misconduct allegations as "largely political" and speculated they were made "because we are conservative". Bill O'Reilly and Fox News settled six agreements, totaling $45 million, with women who accused O'Reilly of sexual harassment. In January 2017, shortly after Bill O'Reilly settled a sexual harassment lawsuit for $32 million ("an extraordinarily large amount for such cases"), Fox News renewed Bill O'Reilly's contract. Fox News's parent company, 21st Century Fox, said it was aware of the lawsuit. The contract between O'Reilly and Fox News read he could not be fired from the network unless sexual harassment allegations were proven in court. Fox News's extensive coverage of the Harvey Weinstein scandal in October 2017 was seen by some as hypocritical. Fox News dedicated at least 12 hours of coverage to the Weinstein scandal, yet only dedicated 20 minutes to Bill O'Reilly, who just like Weinstein had been accused of sexual harassment by a multitude of women. A few weeks later, when a number of females under the age of 18, including a 14-year-old, accused Alabama Senate candidate Roy Moore of making sexual advances, Hannity dismissed the sexual misconduct allegations and dedicated coverage on his television show to casting doubt on the accusers. Other prime-time Fox News hosts Tucker Carlson and Laura Ingraham queried The Washington Post's reporting or opted to bring up sexual misconduct allegations regarding show business figures such as Harvey Weinstein and Louis C.K. Fox News figures Jeanine Pirro and Gregg Jarrett questioned both the validity of The Washington Post's reporting and that of the women. In December 2017, a few days before the Alabama Senate election, Fox News, along with the conspiracy websites Breitbart News and The Gateway Pundit, ran an inaccurate headline which claimed one of Roy Moore's accusers admitted to forging an inscription by Roy Moore in her yearbook; Fox News later added a correction to the story. A number of Fox News hosts have welcomed Bill O'Reilly to their shows and paid tributes to Roger Ailes after his death. In May 2017, Hannity called Ailes "a second father" and said to Ailes's "enemies" that he was "preparing to kick your a** in the next life". Ailes had the year before been fired from Fox News after women alleged he sexually harassed them. In September 2017, several months after Bill O'Reilly was fired from Fox News in the wake of women alleging he sexually harassed them, Hannity hosted O'Reilly on his show. Some Fox News employees criticized the decision. According to CNN, during the interview, Hannity found kinship with O'Reilly as he appeared "to feel that he and O'Reilly have both become victims of liberals looking to silence them." In September 2009, the Obama administration engaged in a verbal conflict with Fox News Channel. On September 20, President Barack Obama appeared on all major news programs except Fox News, a snub partially in response to remarks about him by commentators Glenn Beck and Sean Hannity and Fox coverage of Obama's health-care proposal. In late September 2009, Obama's senior advisor David Axelrod and Roger Ailes met in secret to attempt to smooth out tensions between the two camps. Two weeks later, White House chief of staff Rahm Emanuel referred to FNC as "not a news network" and communications director Anita Dunn said "Fox News often operates as either the research arm or the communications arm of the Republican Party". Obama commented: "If media is operating basically as a talk radio format, then that's one thing, and if it's operating as a news outlet, then that's another." Emanuel said it was important "to not have the CNNs and the others in the world basically be led in following Fox". Within days, it was reported that Fox had been excluded from an interview with administration official Ken Feinberg, with bureau chiefs from the White House press pool (ABC, CBS, NBC, and CNN) coming to Fox's defense. A bureau chief said: "If any member had been excluded it would have been the same thing, it has nothing to do with Fox or the White House or the substance of the issues." Shortly after the story broke, the White House admitted to a low-level mistake, saying Fox had not made a specific request to interview Feinberg. Fox White House correspondent Major Garrett said he had not made a specific request, but had a "standing request from me as senior White House correspondent on Fox to interview any newsmaker at the Treasury at any given time news is being made". On November 8, 2009, the Los Angeles Times reported an unnamed Democratic consultant was warned by the White House not to appear on Fox News again. According to the article, Dunn claimed in an e-mail to have checked with colleagues who "deal with TV issues" who denied telling anyone to avoid Fox. Patrick Caddell, a Fox News contributor and former pollster for President Jimmy Carter, said he had spoken with other Democratic consultants who had received similar warnings from the White House. On October 2, 2013, Fox News host Anna Kooiman cited on the air a fake story from the National Report parody site, which claimed Obama had offered to keep the International Museum of Muslim Cultures open with cash from his own pocket. Fox News attracted controversy in April 2018 when it was revealed primetime host Sean Hannity had defended Trump's then personal attorney Michael Cohen on air without disclosing Cohen was his lawyer. On April 9, 2018, federal agents from the U.S. Attorney's office served a search warrant on Cohen's office and residence. On the air, Hannity defended Cohen and criticized the federal action, calling it "highly questionable" and "an unprecedented abuse of power". On April 16, 2018, in a court hearing, Cohen's lawyers told the judge that Cohen had ten clients in 2017–2018 but did "traditional legal tasks" for only three, including Trump. The federal judge ordered the revelation of the third client, whom Cohen's lawyers named as Hannity. Hannity was not sanctioned by Fox News for this breach of journalistic ethics, with Fox News releasing a statement that the channel was unaware of Hannity's relationship to Cohen and that it had "spoken to Sean and he continues to have our full support." Media ethics experts said that Hannity's disclosure failure was a major breach of journalistic ethics and that the network should have suspended or fired him for it. In mid-2021, Fox News agreed to pay a $1 million settlement to New York City after its Commission on Human Rights cited "a pattern of violating the NYC Human Rights Law". A Fox News spokesperson claimed that "FOX News Media has already been in full compliance across the board, but [settled] to continue enacting extensive preventive measures against all forms of discrimination and harassment." International transmission The Fox News Channel feed has international availability via multiple providers, while Fox Extra segments provide alternate programming. Fox News is carried in more than 40 countries. In Australia, FNC is broadcast on the dominant pay television provider Foxtel. FNC reached Brazil through Sky Brasil on November 1, 2002, after being introduced at ABTA 2002. Commercials on FNC are replaced with Fox Extra. It is available on Vivo TV. Fox had initially planned to launch a joint venture with Canwest's Global Television Network, tentatively named Fox News Canada, which would have featured a mixture of U.S. and Canadian news programming. As a result, the CRTC denied a 2003 application requesting permission for Fox News Channel to be carried in Canada. However, in March 2004, a Fox executive said the venture had been shelved; in November of that year, the CRTC added Fox News to its whitelist of foreign channels that may be carried by television providers. In May 2023, the CRTC announced that it would open a public consultation regarding the channel's carriage in Canada, acting upon complaints by the LGBT advocacy group Egale Canada surrounding an episode of Tucker Carlson Tonight that contained content described as "malicious misinformation" regarding trans, non-binary, gender non-conforming, and two-spirit communities, including "the inflammatory and false claim that trans people are 'targeting' Christians." It is available through streaming service Disney+ Hotstar. In Indonesia, it is available on Channel 397 on pay-TV provider First Media. In Israel, FNC is broadcast on Channel 105 of the satellite provider Yes, as well as being carried on Cellcom TV and Partner TV. It is also broadcast on channel 200 on cable operator HOT. In Italy, FNC is broadcast on Sky Italia. Fox News was launched on Stream TV in 2001, and moved to Sky Italia in 2003. Although service to Japan ceased in summer 2003, it can still be seen on Americable (distributor for American bases), Mediatti (Kadena Air Base) and Pan Global TV Japan. The channel's international feed is being carried by cable provider Izzi Telecom. In the Netherlands, Fox News has been carried by cable providers UPC Nederland and CASEMA, and satellite provider Canaldigitaal; all have dropped the channel in recent years. At this time, only cable provider Caiway (available in a limited number of towns in the central part of the country) is broadcasting the channel. The channel was also carried by IPTV provider KNIPPR (owned by T-Mobile). In New Zealand, FNC is broadcast on Channel 088 of pay satellite operator SKY Network Television's digital platform. It was formerly broadcast overnight on free-to-air UHF New Zealand TV channel Prime; this was discontinued in January 2010, reportedly due to an expiring broadcasting license. In Pakistan, Fox News Channel is available on PTCL Smart TV and a number of cable and IPTV operators. In the Philippines, Fox News Channel is available on Sky Cable, Cablelink and G Sat Channel 50. It was available on Cignal until January 1, 2021, due to contract expiration; however, the channel returned on June 16, 2022. In Portugal, Fox News was available on Meo. The channel is however no longer available on the operator and it is not carried by other Portuguese TV operators. Between 2003 and 2006, in Sweden and the other Scandinavian countries, FNC was broadcast 16 hours a day on TV8 (with Fox News Extra segments replacing U.S. advertising). Fox News was dropped by TV8 in September 2006. In Singapore, FNC is broadcast on pay-TV operator StarHub TV, as well on Singtel TV. In South Africa, FNC is broadcast on StarSat. The most popular pay television operator, DStv, does not offer FNC in its channel bouquet. In Spain, Fox News was available on Movistar Plus+. The channel was part of the operator since its first incarnation as Canal Satellite Digital in the early 2000s, but was later removed from the operator's satellite offer by March 2023, and ceased transmission to the remaining offers on July 9, 2024. The channel is not carried by other Spanish TV operators. FNC was carried in the United Kingdom by Sky. On August 29, 2017, Sky dropped Fox News; the broadcaster said its carriage was not "commercially viable" due to average viewership of fewer than 2,000 viewers per day. The company said the decision was unrelated to 21st Century Fox's proposed acquisition of the remainder of Sky plc (which ultimately led to a bidding war that resulted in its acquisition by Comcast instead). The potential co-ownership had prompted concerns from critics of the deal, who felt Sky News could similarly undergo a shift to an opinionated format with a right-wing viewpoint. However, such a move would violate Ofcom broadcast codes, which requires all news programming to show due impartiality. The channel's broadcasts in the country have violated this rule on several occasions. Notable personalities See also Notes References Further reading External links
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[SOURCE: https://en.wikipedia.org/wiki/Fran%C3%A7afrique] \| [TOKENS: 9861]
Contents Françafrique In international relations, Françafrique (French pronunciation: [fʁɑ̃safʁik]) was France's sphere of influence (or pré carré in French, meaning 'backyard') over former French and (also French-speaking) Belgian colonies in sub-Saharan Africa. The term was derived from the expression France-Afrique, which was used by the first president of Ivory Coast, Félix Houphouët-Boigny, in 1955 to describe his country's close ties with France. It was later pejoratively renamed Françafrique by François-Xavier Verschave in 1998 to criticise the alleged corrupt and clandestine activities of various Franco-African political, economic and military networks, also defined as France's neocolonialism. Following the accession to independence of its African colonies beginning in 1959, France continued to maintain a sphere of influence over the new countries, which was critical to then President Charles de Gaulle's vision of France as a global power (or grandeur in French) and as a bulwark to British and American influence in a post-colonial world. The United States supported France's continuing presence in Africa to prevent the region from falling under Soviet influence during the Cold War. France kept close political, economic, military and cultural ties with its former African colonies that were multi-layered, involving institutional, semi-institutional and informal levels. Françafrique has been characterised by several features that emerged during the Cold War, the first of which was the African cell, a group that comprised the French President and his close advisors who made policy decisions on Africa, often in close collaboration with powerful business networks and the French secret service. Another feature was the franc zone, a currency union that pegged the currencies of most francophone African countries to the French franc. Françafrique was also based, in large part, on the concept of coopération, which was implemented through a series of cooperation accords that allowed France to establish close political, economic, military and cultural ties with its former African colonies. France also saw itself as a guarantor of stability in the region and therefore adopted an interventionist policy in Africa, resulting in military interventions that averaged once a year from 1960 to the mid-1990s. Finally, a central feature of Françafrique were the personal networks that underpinned the informal, family-like relationships between French and African leaders. These networks often lacked oversight and scrutiny, which led to corruption and state racketeering. After the Cold War, the Françafrique regime weakened due to France's budgetary constraints, greater public scrutiny at home, the deaths of pivotal Françafrique actors (Foccart, Mitterrand, Pasqua and members of Elf), and the integration of France into the European Union. Economic liberalisation, high indebtedness, and political instability of the former African colonies, as well as the increase in African trade with other countries, have led France to slowly adapt its relations with former colonies. France facilitated the arrival of young African executives in France so that they could pursue higher education. Once graduated, fluent in French and imbued with European values, these young Africans returned to their countries. Having become senior executives, they joined the state apparatus as senior civil servants. And although they had limited social roots, France provided them with assistance, which propelled them to the highest echelons of power in their countries. The Defense Agreements between France and French-speaking African countries established close cooperation, particularly in defense and security matters. Often accompanied by secret clauses, they allowed France to intervene militarily: to rescue regimes in order to establish the legitimacy of political powers favorable to its interests, to fight jihadism, particularly in the Sahel, or to put an end to civil wars. The departure of French troops from the African continent signals the end of a world, that of interventions in Chad, Togo, Gabon, Rwanda, Djibouti, Zaire, Somalia, Ivory Coast, Mali, Libya, and Cameroon. It also marks the end of Françafrique. Etymology The term Françafrique was derived from the expression France-Afrique. The first known usage is in a 1945 editorial from the pro-colonial politician and journalist Jean Piot [fr] in the newspaper L'Aurore. It has often been mistakenly attributed to a 1955 discourse by President Félix Houphouët-Boigny of Ivory Coast, who advocated maintaining a close relationship with France, while acceding to independence. Close cooperation between Houphouët-Boigny and Jacques Foccart, chief advisor on African policy in the Charles de Gaulle and Georges Pompidou governments (1958–1974) is claimed by supporters to have contributed to the "Ivorian miracle" of economic and industrial progress. The term Françafrique was subsequently used by François-Xavier Verschave as the title of his 1998 book, La Françafrique: le plus long scandale de la République, which criticises French policies in Africa. By announcing the end of Françafrique, since the successive governments of the former French possessions in Africa gained independence, France is only proving that the process of decolonization is an unfinished process. Verschave also noted the pun in the term Françafrique, as it sounds like "France à fric" (a source of cash for France; fric is French slang for 'cash'), and that "Over the course of four decades, hundreds of thousands of euros misappropriated from debt, aid, oil, cocoa... or drained through French importing monopolies, have financed French political-business networks (all of them offshoots of the main neo-Gaullist network), shareholders' dividends, the secret services' major operations and mercenary expeditions". History When Charles de Gaulle returned to power as French President in 1958, France had already been severely weakened by World War II and by the conflicts in Indochina and Algeria. He proceeded to grant independence to France's remaining colonies in sub-Saharan Africa in 1960 in an effort to maintain close cultural and economic ties with them and to avoid more costly colonial wars. Compared to the decolonisation of French Indochina and Algeria, the transfer of power in sub-Saharan Africa was, for the most part, peaceful. Nevertheless, de Gaulle was keen on preserving France's status as a global power (or grandeur) and as a bulwark against British and American influence in a post-colonial world. Thus, he saw close links with France's former African colonies as an opportunity to enhance France's image on the world stage, both as a major power and as a counterbalancing force between the United States and the Soviet Union during the Cold War. The United States supported France's continuing presence in Africa to prevent the region from falling under Soviet influence. Similarly, the United Kingdom had little interest in West Africa, which left France as the only major power in that region. On 24 August 1958, in Brazzaville, President Charles de Gaulle recognized that African states had legitimate demands in terms of independence, but that they should go through a period of political learning in the French Community, an organization encompassing France and its colonies. A referendum was organized on 28 September 1958, to decide on the fate of the African states in question. Voting "yes" meant joining the French Community and engaging on a path to independence, while voting "no" meant immediate independence. De Gaulle had also warned that states voting "no" would commit "secession", and that France would pull out their financial and material aids. All voted yes but Guinea, led by Ahmed Sékou Touré, head of the Democratic Party of Guinea. On 2 October 1958, Guinea proclaimed its independence, and Sékou Touré became its first ever president. At the time, France was still processing its defeat in Indochina, and feared uprisings in Cameroon and other African nations. Paris feared that Guinea could incite similar movements in the region, so they decided to engage in political and economic retaliation. Though Sékou Touré had sent a letter to de Gaulle on 15 October 1958, asking for Guinea to stay in the CFA franc zone, France banished them from the monetary union in the wake of their independence. Resolutely isolated, Guinea got closer to Eastern Bloc countries in the context of the Cold War. They started working on a new currency with the help of foreign experts, but France saw this as a threat to the stability in the region and its influence there. Therefore, in 1959, France launched operations to undermine the regime in place. Among the methods of destabilization used, one called "Operation Persil" involved introducing a large quantity of fake bills of the new currency in the country to cause inflation and disturb the economy. Nevertheless, with the help of the USSR and China, Sékou Touré's regime held on power until his death in 1984. To implement his vision of France's grandeur, de Gaulle appointed Jacques Foccart, a close adviser and former intelligence member of the French Resistance during World War II, as Secretary-General for African and Malagasy Affairs. Foccart played a pivotal role in maintaining France's sphere of influence in sub-Saharan Africa as he put in place a series of cooperation accords that covered political, economic, military and cultural sectors with an ensemble of African countries, which included France's former colonies in sub-Saharan Africa (Benin, Burkina Faso, Central African Republic, Chad, Comoros, Djibouti, Gabon, Guinea, Ivory Coast, Mali, Mauritania, Niger, Republic of the Congo and Senegal), former United Nations trust territories (Cameroon and Togo), former Belgian colonies (Rwanda, Burundi and Democratic Republic of Congo) and ex-Portuguese (Guinea-Bissau) and Spanish (Equatorial Guinea) territories. France's relationship with this whole ensemble was managed by the Ministry of Cooperation, which was created in 1961 out of the old colonial ministry, Ministry for Overseas France. The Ministry of Cooperation served as a focal point for France's new system of influence in Africa and was later merged with the Ministry of Foreign Affairs in 1999. Foccart also built a dense web of personal networks that underpinned the informal and family-like relationships between French and African leaders. These accords and relationships, along with the franc zone, allowed France to maintain close ties with its former colonies in sub-Saharan Africa that were multi-layered, involving institutional, semi-institutional and informal levels. Foccart continued to serve as chief adviser until he was replaced with his younger deputy, René Journiac, by French President Valéry Giscard d'Estaing. Upon becoming President of France in 1995, Chirac again sought Foccart's counsel and even brought him on his first trip to Africa as French President. Foccart continued to play a role in Franco-African relations until his death in 1997. During his five years in power, Georges Pompidou did not break with the Gaullist tradition. Françafrique was very strong under the leadership of Foccart, and these years consolidated a system of networks between France, French companies, and African elites. When Valéry Giscard d'Estaing came to power in 1974, he intended on breaking with the practices of de Gaulle and modernize relations between France and Africa. Despite these intentions, he faced several obstacles. First of all, the networks of Françafrique endured thanks to Journiac, who maintained strong ties with South Africa despite apartheid, but also with Congo, Gabon and Niger, whose raw materials were essential to France. He was also confronted with the political instability of African states, which led him to play the role of "policeman of Africa", i.e. to intervene militarily, notably in Chad and Zaire, to lend a hand to local leaders. Finally, the last obstacle was that the French president was involved in corruption cases revealed by the Canard Enchainé in October 1979. Jean-Bedel Bokassa, emperor of the Central African Republic, is said to have sent him suitcases of diamonds on several occasions. Silent about the affair at first, he finally spoke out as new evidence emerged and declared that the gifts received were all sold and the money collected paid to NGOs. More than the facts, it is above all the symbolism of the affair that shook Valéry Giscard d'Estaing. During François Mitterrand's 14 years in power, two dynamics confronted each other. The imperative remained to defend French interests in Africa. That was in line with the political choices of Mitterrand's predecessors even though he was a socialist, unlike de Gaulle and Pompidou. Nevertheless, there was a change of doctrine in terms of foreign policy concerning Françafrique. Mitterrand made public financial and material aid distributed by the French state conditional on the democratization of African countries. Additionally, unlike his predecessors who maintained strong ties with South Africa, Mitterrand denounced the crimes of apartheid. When Jacques Chirac was the French Prime Minister from 1986 to 1988, during the cohabitation, he consulted Foccart on African issues.[citation needed] In 1995, after several attempts, Chirac was elected president of France. He brought with him Foccart, who had been his advisor on African matters during Chirac's time as mayor of Paris and Prime Minister. Generally speaking, Chirac continued French diplomatic efforts to maintain the special ties with Africa that de Gaulle had built earlier. He was thus opposed to the devaluation of the CFA franc as well as to the reform of the co-operation, which would be for him an abandonment of French solidarity in the African continent. He was appreciated by the African political leaders in place, but he did not make the issue of human rights a priority in his foreign policy, as was shown by his proximity to the authoritarian regime of Mobutu Sese Seko in Zaire. Nicolas Sarkozy worked to transform the Franco-African relationship. He attached the "African cell" of the French state to the diplomatic cell, thus closing the page on decades of official and unofficial networks once woven by Foccart. However, Sarkozy also caused indignation in a speech on 26 July 2007, at the Cheikh Anta Diop University, in Dakar, when he declared that "the African man has not entered history enough" and that "the problem of Africa is that it lives too much in the present in nostalgia for the lost paradise of childhood." The five-year term of François Hollande was marked by an ambivalence in French foreign policy on Africa. Indeed, when he came to power he promised the end of Françafrique and also declared that "the time of Françafrique is over: there is France, there is Africa, there is the partnership between France and Africa, with relations based on respect, clarity and solidarity." However, Hollande had military troops deployed in the Sahel, and ties are built of maintained with networks that were more or less occult. Also, the presence of many African dictators such as Idriss Déby or Paul Biya recalled the difficulty of France to break clearly with Françafrique, which embedded French interests. That recalled the hopes and delusions associated with the Mitterrand years in these matters. [clarification needed] In August 2017, Emmanuel Macron founded the Presidential Council for Africa, an advisory body composed of people from civil society, mostly members of the African diaspora. While its supporters see the institution as a way to bring together civil society personalities around issues related to Africa rather than officials or business leaders, others see it as a new bridge between African elites, the Diaspora, and French interests in the Africa. In April 2021, President Macron visited Chad for the funerals of President Idriss Déby, who died while he was commanding military forces who were fighting rebels from the Front for Change and Concord in Chad (FACT) on the frontline. Déby had ruled Chad from 1990 to his death and was succeeded by his son and army general Mahamat Déby who staged what some called an "institutional coup d'état". The official visit of the French head of state thus contributed in legitimizing the authoritarian regime. During the 2020s in the Coup Belt, the military juntas of Burkina Faso, Mali, and Niger cancelled military agreements that allowed for French troops to operate on their territory, and all these countries also removed French as an official language. They also signed a mutual defense pact in 2023 called the Alliance of Sahel States. Guinea which also witnessed a coup d'état has been supportive of the CES and its goals, for example defying border closures imposed by ECOWAS and giving the Sahel states access to its ports. On 31 January 2025, a report adopted by the French Defense and Armed Forces Commission noted the failure of the attempt to renew relations between France and African countries, initiated by Emmanuel Macron in 2017, during his first term, and a deterioration of France's image in Africa. In April 2025, the parliamentary intelligence delegation published a report on French secret services in Africa. The delegation expressed its concern about the repeated occurrence of unanticipated regime overthrows, revealing a flaw in French intelligence. In June 2025, according to French President Emmanuel Macron, "The solution Russia is proposing directly, or through Wagner, is neocolonialism. It secures your position as leader. And then it takes your mines, it takes your information system, and it puts the country under lockdown. This is not development aid". Russian forces have been in the region since 2017, and the government relations date back to the Cold War. Wagner forces have been sent to fight in the Sahel, and they were first deployed to fight in Mali in December 2021, in exchange for reserves of gold and other resources. The Mali government had officially requested help from Wagner after the military junta took power. Russian forces have also provided training and expertise in countries like Sudan, Burkina Faso, CAR, Chad, Niger, and Libya with the stated role of cementing the local government's influence and fighting jihadists. They have also committed numerous atrocities, and far from decreasing violence, it seems violence has only increased in the region, further cementing their need. Russia is also working to decrease access of Western powers to mineral resources in the countries. In July 2025, a conference is being organized in France by the Association of Grand Orient Lodges, entitled "Africa and France at the Crossroads: An Essential Dialogue to Rethink Franco-African Relations". Features from the Cold War Decisions on France's African policies have been the responsibility (or domaine réservé in French) of French presidents since 1958. They along with their close advisors formed the African cell, which made decisions on African countries without engaging in broader discussions with the French Parliament and civil society actors such as non-governmental organisations. Instead, the African cell worked closely with powerful business networks and the French secret service. The African cell's founding father, Jacques Foccart, was appointed by President Charles de Gaulle. He became a specialist on African matters at the Élysée Palace. Between 1986 and 1992, Jean-Christophe Mitterrand, the son of President François Mitterrand and a former AFP journalist in Africa, held the position of chief advisor on African policy at the African cell. He was nicknamed Papamadi (translated as 'Daddy told me'). He was appointed as a diplomatic advisor on Africa but the difference in titles was only symbolic.[citation needed] Subsequently, Claude Guéant served as Africa Advisor to President Sarkozy. In 2017, President Macron appointed Franck Paris to the same role. The franc zone, a currency union in sub-Saharan Africa, was established when the CFA franc (or franc de la Communauté Financière Africaine) was created in 1945 as a colonial currency for over a dozen of France's African colonies. The zone continued to exist even after the colonies had achieved their independence in the early 1960s, with only three African countries ever leaving the zone, mostly for reasons of national prestige. One of the three countries, Mali, rejoined the zone in 1984. The CFA franc was pegged to the French franc, and now the euro, and its convertibility is guaranteed by the French Treasury. Despite sharing the same exchange rate, the CFA franc is actually two currencies, the Central African CFA franc and the West African CFA franc, which are run by their respective central banks in Central and West Africa. The foreign exchange reserves of member countries are pooled and each of the two African central banks keeps 65% of its foreign reserves with the French Treasury. The franc zone was intended to provide African countries with monetary stability, with member countries such as Ivory Coast experiencing relatively low inflation at an average rate of 6% over the past 50 years compared to 29% in neighboring Ghana, a non-member country. Moreover, the fixed exchange rate between the CFA Franc and the French franc has changed only once in 1994 when the CFA franc was considered overvalued. However, this monetary arrangement has enabled France to control the money supply of the CFA franc and to influence the decision-making process of the African central banks through their boards. The parity of the CFA franc to the euro has allowed French companies and French people to buy African resources (e.g., cocoa, coffee, gold, uranium, etc.) without having to pay any foreign currency. It also serves as a guaranty for French investments in the region as the CFA franc is pegged on the euro which means that there is little risks of monetary fluctuations. Many French corporations such as TotalEnergies, Orange, or Bouygues have used this free movement of capital to bring back profits made in these 14 countries, without any typical risks associated to foreign currency exchanges. Critics of the CFA franc also point to the structure of the CFA franc to euro convertibility as being unfair since the economic cycles happening inside the Eurozone differ from those happening in the UEMOA and the CEMAC. This indirectly leaves the 14 African states subject to EU dynamics in terms of monetary policy. Nonetheless, while the European Central Bank's main mission is to control inflation in the EU, most African states' present priorities are creating jobs and investing in infrastructures, which are policies driving inflation. Therefore, some say that the convertibility of the CFA franc is a disservice to the development of African nations. Experts also denounce the CFA franc as a symbol of persistent French monetary dominance in Africa. In May 2025, activists, economists and civil society representatives opposed to the use of the CFA franc will organize conferences and meetings across African capitals. On 16 May 2025, a demonstration dubbed "5,000 young people march for Cheikh Anta Diop" brought thousands of protesters to the streets of Dakar, Senegal. The demonstration was led by pan-Africanist movements, which made demands, including the abandonment of the CFA franc, as "a neocolonial currency and a demand for financial reparations from France for centuries of exploitation of Africa". In the early 1960s, French governments had developed a discourse around the concept of coopération, or "post-independence relationship". This concept was linked to the effort of spreading French influence across the world such as promoting French language and culture, securing markets for French goods and projecting French power. It was to be achieved outside of a traditional colonial context whereby sovereign states such as France and the newly independent African countries would work together for mutual benefit. The concept of coopération also appealed to France's sense of historic responsibility to advance the development of its former colonial "family". To that end, France signed cooperation accords with its former colonies, which provided them with cultural, technical and military assistance such as sending French teachers and military advisors to work for the newly formed African governments. The accords also allowed France to maintain troops in Chad, Djibouti, Gabon, Ivory Coast and Senegal, and to establish a framework that would allow France to intervene militarily in the region. The French presence abroad has long been manifested by military bases in various partner countries or former French African colonies. Thanks to these military bases in Africa, France can claim a free extraterritorial zone. In the aftermath of World War Two, France took steps to create a military nuclear program. In principle, this would have allowed it to protect itself from the Soviet threat in the East, but also to guarantee peace in Europe and a certain independence from the United States. However, in order to do this, France needed a stable supply of uranium, and so they signed a cooperation agreement with Niger in the early 1960s to get access to the African state's uranium reserves. This agreement was a priority for then President Charles de Gaulle who wished to compete with the largest nuclear powers. From 1970 to 1981, the French military cooperation budget constituted 11 to 19% of the entire coopération budget. Under President de Gaulle, French aid and assistance were made contingent on the signing of these accords. For example, when Guinea refused to sign the accords, France immediately withdrew its personnel from Guinea and terminated all assistance to that country. The implementation of these accords was the responsibility of Jacques Foccart, Secretary-General for African and Malagasy Affairs under Presidents Charles de Gaulle and Georges Pompidou. In 1987, France was the largest source of development aid to sub-Saharan Africa, providing up to 18% of total aid to the region, followed by the World Bank (13%), Italy (8.5%), United States (6.8%), Germany (6.8%), and the European Community (6.4%). All French aid was provided through the Ministry of Cooperation. France has benefited from its aid, trade and investments in Africa, which has consistently generated a positive balance of payment in France's favour. Defense cooperation agreements were renegotiated after 2008. Only Djibouti retained the clause stipulating that France "undertakes to contribute to the defense of the territorial integrity" of the country. In contrast, the other West and Central African countries adopted partnership or cooperation agreements. After decolonisation, France established formal defence agreements with many francophone countries in sub-Saharan Africa. These arrangements allowed France to establish itself as a guarantor of stability and hegemony in the region. France adopted an interventionist policy in Africa, resulting in 122 military interventions that averaged once a year from 1960 to the mid-1990s and included countries such as Benin (Operation Verdier in 1991), Central African Republic (Operation Barracuda in 1979 and Operation Almandin in 1996), Chad (Opération Bison in 1968–72, Opération Tacaud in 1978, Operation Manta in 1983 and Opération Épervier in 1986), Comoros (Operation Oside in 1989 and Operation Azalee in 1995), Democratic Republic of Congo (Operation Léopard in 1978 and Operation Baumier in 1991 when it was Zaire, and Operation Artemis in 2003), Djibouti (Operation Godoria in 1991), Gabon (1964 and Operation Requin in 1990), Ivory Coast (Opération Licorne in 2002), Mauritania (Opération Lamantin in 1977), Republic of Congo (Opération Pélican in 1997), Rwanda (Operation Noroît in 1990–93, Operation Amaryllis in 1994 and Opération Turquoise in 1994), Togo (1986), Senegal (prevent a coup d'état in 1962) and Sierra Leone (Operation Simbleau in 1992). France often intervened to protect French nationals, to put down rebellions or prevent coups, to restore order or to support particular African leaders. A central feature of Françafrique was that state-to-state relations between French and African leaders were informal and family-like and were bolstered by a dense web of personal networks (or réseaux in French), whose activities were funded from the coopération budget. Jacque Foccart put in place these networks, which served as one of the main vehicles for the clientelist relations that France had maintained with its former African colonies. The activities of these networks were not subjected to parliamentary oversight or scrutiny, which led to corruption as politicians and officials became involved in business activities that resulted in state racketeering. The blurring of state, party and personal interests made it possible for the informal, family-like relationships of the Franco-African bloc to benefit specific interest groups and small sections of French and African populations. For example, major French political parties have received funding from the recycling of part of the coopération budget, which secretly made its way to the party's coffers via Africa and from Elf, a French state-owned oil company, when it achieved its strategic objectives in Africa. African leaders and the small French-speaking elites to which they belonged also benefited from this informal relationship as it provided them with political, economic and military support. The French press, long seen as a bastion of freedom of expression, has often played a much less noble role when it comes to Africa. Behind a veneer of neutrality and objectivity, it has established itself as a strategic tool in the service of French neocolonial policy. By shaping narratives, amplifying certain voices and silencing others, it contributes to keeping Africa under the yoke of insidious domination. The French press has often been accused of being an extension of the economic and geopolitical interests of the French state. According to journalist and essayist François-Xavier Verschave, author of "La Françafrique: Le plus long scandale de la République," "the French media participate in the construction of a narrative that legitimizes economic predation and military interventions in Africa." This narrative is carefully crafted to justify the French presence on the continent under the guise of "stabilization" or "fighting international crime". Post–Cold War era The Françafrique regime was at its height from 1960 to 1989 but after the Cold War, it has weakened due to France's budgetary constraints, greater public scrutiny at home, the deaths of pivotal Françafrique figures and the integration of France into the European Union. Economic liberalisation, high indebtedness and political instability of the former African colonies have reduced their political and economic attractiveness, leading France to adopt a more pragmatic and hard-nosed approach to its African relations. Furthermore, many of the dense web of informal networks that bound France to Africa have declined. The pre-1990 aid regime of the old Françafrique, which has made the sub-Saharan African countries economically dependent on France has now given way to a new regime that is supposed to promote self-sufficiency as well as political and economic liberalism. France has also adopted the Abidjan doctrine, which has internationalised the economic dependency of African countries by having them first reach an agreement with the International Monetary Fund (IMF) before receiving French aid. This in turn has decreased the French government's ability to manoeuvre freely to pursue its own distinctive African policy. As a result, the old Franco-African bloc has now splintered, with France adopting a new style of relationship with its former African colonies. France has made efforts to reduce its military footprint in Africa by making multilateral arrangements with African and European states. French President François Hollande started his tenure with a commitment to non-interventionism. However, a year later, France intervened in Mali at the request of the Malian government, sending 4,000 troops (see Operation Serval, then Operation Barkhane). According to a 2020 study, "France's commitment to multilateralism is genuine yet not absolute—meaning that French policy-makers do not shy away from operational unilateralism if conditions on the ground seem to require swift and robust military action, as long as they can count on the political support of key international partners." The French Development Agency (AFD) and Caisse des Dépôts et des Consignations (CDC) signed a strategic alliance charter in December 2016, one of the financial drivers of which is the creation of a €500 million investment fund. This fund is used to finance infrastructure projects in Africa, in various sectors (energy, telecommunications, etc.). Some critics, however, point to the fund's strategy of creating opportunities and opening the market to mostly French companies, thus feeding capital transfer bridges that are the roots of Françafrique. The arrest of Senegalese opposition leader and member of Parliament Ousmane Sonko for allegations of rape, in Senegal, in March 2021, shook the country. Senegalese people, especially young ones, critiqued the lack of transparency of the proceedings, and saw this as a political maneuver orchestrated by President Macky Sall to suppress the opposition before the next presidential elections in Senegal. Protesters took to the streets, and days of chaos ensued. Among their grievances, people blamed Sall for leaning too much towards France, giving too many opportunities to French companies when local businesses could step in. To manifest this frustration protesters targeted French corporate symbols such as Auchan supermarkets, Orange stores, and TotalEnergies gas stations. Some protesters also committed looting and destroyed property. These companies were accused by protesters of reaping benefits from the hands of Senegalese people. On 21 December 2019, French President Emmanuel Macron and Ivorian President Alassane Ouattara announced in a press conference that they had signed a new cooperation accord replacing that of 1973. This agreement replaced the West African CFA franc with the Eco, the new currency for the Economic Community of West African States (ECOWAS). This will only apply to countries belonging to the West African Economic and Monetary Union (UEMOA) which includes Benin, Burkina Faso, Guinea-Bissau, Ivory Coast, Mali, Niger, Senegal, and Togo, and not to member states of the Economic and Monetary Community of Central Africa (CEMAC from its French appellation), which use the Central African CFA franc and includes Cameroon, the Central African Republic, Chad, Equatorial Guinea, Gabon, and the Republic of the Congo. A bill approving the new cooperation accord was ratified on 10 November 2020, by the French National Assembly, and then by the French Senate on 28 January 2021. The text is composed of three main reforms: the change of currency from the CFA franc to the Eco, the abolition of the obligation to centralize 50% of the CFA franc reserves at the Banque of France, and the withdrawal of French representatives from the UEMOA's governing bodies (e.g., BCEAO's board, UMOA's banking commission, etc.). In June 2021, Emmanuel Macron announced that Operation Barkhane was drawing down to be gradually replaced by the international Takuba Task Force. As of 2021, France retains the largest military presence in Africa of any former colonial power. The French presence has been complicated by other expanding spheres of influence in Africa such as those of Russia and China. In 2016, China's investment in Africa was $38.4 billion versus France's $7.7 billion. Russia has been seen as expanding opportunistically in Africa, with both the mercenary Wagner Group, with which the Kremlin has denied links, and official military agreements. Macron has accused Moscow and Ankara of fueling anti-French sentiment in the Central African Republic. One of the main emphases of France's continuing links in Africa is opposing Islamist militants in the Sahel. Many former French colonies have experienced a growing anti-French sentiment in the past 30 years. This feeling, particularly present among the younger generations who have not experienced colonization or the period of independence, is also reinforced by events such as the genocide of the Tutsi in Rwanda, the civil war in Côte d'Ivoire or the crisis in Libya. While the older generation is more likely to support strong ties with France because they believe it brings stability, the younger generation sees it as a brake on the development of African states and businesses. The Sahel is an area of land that serves as a demarcation line between Western and Central Africa. It is situated between the nations of Mali, Mauritania, Niger, Chad, and Burkina Faso, which are all former French colonies. In 2012, militant groups affiliated with Al-Qaeda attempted to seize parts of Mali with the intent to take control of other areas within the region. Due to these pertinent issues, the involvement of France has increased in order to provide military assistance to Sahelian countries. This is defined by Operation Serval, which was a French effort under the leadership of former president Francois Hollande in order to prevent Islamist militants from seizing Bamako, Mali. The success of this operation was short-lived as militant groups began to appear in neighboring nations, including Chad and Burkina Faso. By 2014, the French military sent over 5,000 troops to the Sahel under Operation Barkhane as a means to support governments throughout the region in their struggle against Islamist groups. As a result of these operations, French forces have only expanded their oversight throughout the Sahel. The ongoing conflict between French-backed forces and Jihadist militant groups continues to have detrimental consequences, which have led to increased rates of death and displacement within the Sahel territories. In 2021 alone, almost 6,000 people died due to conflict-related deaths in Niger, Mali, and Burkina Faso. There are also increasing security concerns for coastal nations such as Benin and Senegal[citation needed] as militant groups advance further within the region's borders. In November 2024, the special politician for French operations in Africa, Jean-Marie Bockel, submitted a report to President Emmanuel Macron on the reconfiguration of the French military presence in Africa. This report advocates a "renewed" and "rebuilt" partnership. France plans to reduce the pre-positioned forces it has on its military bases. The new terms of France's military presence in Africa provide for a significant reduction to maintain only a permanent liaison detachment and at the same time adapt the offer of military cooperation to the needs expressed by African countries. Pro-Russian Pan-Africanist activists are a vent for anti-French sentiment in Africa. [clarification needed] In April 2025, the "Ancrages" forum, organized by France, aims to renew relations between Africa and France. The forum focuses exclusively on economic diplomacy, territorial diplomacy, and the concrete promotion of the various State support mechanisms for creation and entrepreneurship in France and Africa. While the support of the French military continues to be a source of protection for countries in the Sahel, recent developments suggest that this reality may soon change. Despite the initial demand for military backing and aid in 2013 and 2014, public opinion has shown less enthusiasm for France's current involvement in the Sahel. People have grown increasingly critical of the French government's action, or lack thereof, in preventing further casualties and attacks by Islamic militant forces. Many have also opposed the strategy of the French military and its lasting presence, which echoes its former colonial past in these territories. In February 2022, French President Emmanuel Macron announced the official withdrawal of military forces within Mali. His decision follows escalating tensions between the French and Malian governments, the latter of which rose to power through a series of military coups in both 2020 and 2021, respectively. Colonel Assimi Goïta is currently serving as interim president of Mali, with the intention to not hold elections until 2024, with the initial goal of not holding elections until 2027. Under Goïta's rule, Mali has signed a deal with the Wagner Group, a Russian military contractor, which has only heightened France's desire to distance itself from the area. These issues, alongside the removal of the French ambassador in the midst of electoral controversy, played a significant role in the nation's decision to remove its officials from Mali. While a complete withdrawal of French troops in Mali is now evident, it raises further questions regarding the social and political instability within the Sahel region. Many governments, including Mali and Burkina Faso, lack the infrastructure necessary to combat militant groups from advancing their agendas, which leaves the ability to secure their borders in tandem. Subsequently, the French government is now searching for a means to continue its military presence in a neighboring country as a way to address military concerns while simultaneously furthering its influence upon the region. On 28 November 2024, Chad terminated the defense and security cooperation agreement that has linked them since Chad's independence. On 10 December, France began the process of withdrawing its armies from Chad. On 10 January 2025, the Abéché military base was returned to Chad by France. In January 2025, the N'Djamena air military base begins to be emptied. The last air base in Chad, the Sergent Adji Kossei base, or commonly 172 Fort-Lamy, is being handed over, starting 31 January 2025. On 31 December 2024, Senegal and Ivory Coast announced that they would end the presence of foreign forces in their country, particularly French forces, and would terminate their military cooperation and defense-security agreements with France. The status of the end of the presence of French forces in Senegal is planned for September 2025. On 7 March 2025, France returned several facilities used by the French army in Senegal, the first transferred as part of its military withdrawal from Senegal, where it had been present since 1960. On 20 February 2025, France officially handed over its sole military base in Ivory Coast to local authorities, marking a significant shift in their bilateral relations. This decision aligns with France's broader strategy to reduce its military footprint in West Africa, following similar withdrawals from countries like Chad, Senegal, Mali, Niger, and Burkina Faso. The base, previously home to the 43rd Marine Infantry Battalion (43rd BIMA), has been transferred to Ivorian control and renamed Camp Thomas d'Aquin Ouattara, in honor of the nation's first army chief. This move reflects Ivory Coast's growing emphasis on national sovereignty and the modernization of its armed forces. France had occupied the Port-Bouët military base for more than 50 years. On 1 July 2025, France handed over the Rufisque joint station to Senegal. This station, active since 1960, was responsible for communications on the southern Atlantic coast. It also served as a listening station in the fight against maritime trafficking. The handover was carried out without ceremony, limited to the signing of a report. The handover of the last remaining military infrastructure in Senegal to the Senegalese authorities occurred later that month. The two military sites were returned to the Senegalese government: the airport base and Camp Geille, a 5-hectare site located in Ouakam. Four villas located in Plateau, near the port, were also transferred. On 14 July 2025, Christine Fages, French Ambassador to Senegal, declared, "In accordance with the guidelines established in 2022 by President Macron, France will return to Senegal the military bases of the French elements in Senegal." The transfer occurred on 17 July. Following the French military withdrawal from Africa, private military companies quickly offered their services to states wishing to outsource a wide range of missions ranging from logistical support, securing sites, training, and the protection of personalities. France's economic interests in Africa have remained important since the end of the Cold War. More than 40,000 French companies are active in Africa, dozens of which are large multinationals such as TotalEnergies, Areva, or Vinci. In fact, France's exports to Africa have increased from 13 billion dollars to 28 billion in the last 20 years, while French foreign direct investment has increased tenfold, from 5.9 billion euros in 2000 to 52.6 billion in 2017. However, it is important to note that while these investments and economic flows have increased, France's market share has drastically decreased since the early 2000s. Indeed, while French exports to Africa have doubled, the total size of the market has quadrupled (from 100 billion dollars to 400); France's market share has therefore been divided by 2 in 20 years. While France remains a crucial player in the African market, its position has been compromised by other foreign investors such as China, who have recently showcased their interest in the continent. From 2010 to 2015, Chinese investors granted $2.5 billion in loans for infrastructure to Côte d'Ivoire alone. And their sights are set on the entirety of Francophone Africa as they seek new opportunities for development in the private sector. By the end of 2017, China's capital increased at a rate of 332% throughout the region. This leaves China in an economically advantageous position, thereby making their monetary gain a legitimate threat to French investors. Although France's influence may be weakening throughout Francophone Africa, there also remains strong social and economic ties that link these nations together. One prime example can be displayed through the already established business deals with the French private sector in order to increase development in West Africa. An additional factor that connects France to its former colonies is their usage of the French language. Francophone African nations are placed at an economic advantage within European countries such as France, Switzerland, and Belgium due to their shared linguistic identities. With increasingly younger populations, African countries are viewed as the ideal candidates for long-term investment by international actors. This sentiment directly reflects France's approach to its former colonies, which comprise over half of its primary trade exports. This includes West African countries such as Senegal and Cameroon, which continue to play an integral role in supplying natural resources, hardware, and manufactured goods. Despite these staggering numbers, France remains in a vulnerable position as it renounces its title as the top investor in the region. The prospect of foreign backers and the appeal of Intra-African trade opportunities have encouraged West African nations to reclaim their economic agency from their former occupiers. Ultimately, these circumstances have contributed to France's declining economic influence. Currently, French companies are less linked to Africa, or at least to the countries that were formerly colonies of France. France's main economic partners in Africa are indeed the Maghreb countries (Morocco, Algeria, Tunisia), Nigeria, South Africa, and Angola. Some critics of French foreign policy in Africa question the deep commitment that France has with the former French colonies, particularly in sub-Saharan Africa, given the low financial and commercial interest that the countries of the CFA franc zone represent for French companies. On 6 June 2023 French Foreign Minister Catherine Colonna said France wants to remain a "relevant partner" in Africa despite "anti-French rhetoric" while presenting the country's foreign policy in Africa to the Senate. The Scattered Islands in the Indian Ocean are partially claimed by the Comoros, Madagascar, and Mauritius. The Malagasy and Mauritian claims, however, are significantly later than their access to independence. However, the agreement reached in October 2024 between the United Kingdom and Mauritius to transfer the British Indian Ocean Territory to Mauritian sovereignty has relaunched the debate in Madagascar. Opposition Cultural references See also References Further reading External links
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Contents Thirty-seventh government of Israel The thirty-seventh government of Israel is the current cabinet of Israel, formed on 29 December 2022, following the Knesset election the previous month. The coalition government currently consists of five parties — Likud, Shas, Otzma Yehudit, Religious Zionist Party and New Hope — and is led by Benjamin Netanyahu, who took office as the prime minister of Israel for the sixth time. The government is widely regarded as the most right-wing government in the country's history, and includes far-right politicians. Several of the government's policy proposals have led to controversies, both within Israel and abroad, with the government's attempts at reforming the judiciary leading to a wave of demonstrations across the country. Following the outbreak of the Gaza war, opposition leader Yair Lapid initiated discussions with Netanyahu on the formation of an emergency government. On 11 October 2023, National Unity MKs Benny Gantz, Gadi Eisenkot, Gideon Sa'ar, Hili Tropper, and Yifat Shasha-Biton joined the Security Cabinet of Israel to form an emergency national unity government. Their accession to the Security Cabinet and to the government (as ministers without portfolio) was approved by the Knesset the following day. Gantz, Netanyahu, and Defense Minister Yoav Gallant became part of the newly formed Israeli war cabinet, with Eisenkot and Ron Dermer serving as observers. National Unity left the government in June 2024. New Hope rejoined the government in September. Otzma Yehudit announced on 19 January 2025 that it had withdrawn from the government, which took effect on 21 January, following the cabinet's acceptance of the three-phase Gaza war ceasefire proposal, though it rejoined two months later. United Torah Judaism left the government in July 2025 over dissatisfaction with the government's draft conscription law. Shas left the government several days later, though it remains part of the coalition. Background The right-wing bloc of parties, led by Benjamin Netanyahu, known in Israel as the national camp, won 64 of the 120 seats in the elections for the Knesset, while the coalition led by the incumbent prime minister Yair Lapid won 51 seats. The new majority has been variously described as the most right-wing government in Israeli history, as well as Israel's most religious government. Shortly after the elections, Lapid conceded to Netanyahu, and congratulated him, wishing him luck "for the sake of the Israeli people". On 15 November, the swearing-in ceremony for the newly elected members of the 25th Knesset was held during the opening session. The vote to appoint a new Speaker of the Knesset, which is usually conducted at the opening session, as well as the swearing in of cabinet members were postponed since ongoing coalition negotiations had not yet resulted in agreement on these positions. Government formation Yair Lapid Yesh Atid Benjamin Netanyahu Likud On 3 November 2022, Netanyahu told his aide Yariv Levin to begin informal coalition talks with allied parties, after 97% of the vote was counted. The leader of the Shas party Aryeh Deri met with Yitzhak Goldknopf, the leader of United Torah Judaism and its Agudat Yisrael faction, on 4 November. The two parties agreed to cooperate as members of the next government. The Degel HaTorah faction of United Torah Judaism stated on 5 November that it will maintain its ideological stance about not seeking any ministerial posts, as per the instruction of its spiritual leader Rabbi Gershon Edelstein, but will seek other senior posts like Knesset committee chairmen and deputy ministers. Netanyahu himself started holding talks on 6 November. He first met with Moshe Gafni, the leader of Degel HaTorah, and then with Goldknopf. Meanwhile, the Religious Zionist Party leader Bezalel Smotrich and the leader of its Otzma Yehudit faction Itamar Ben-Gvir pledged that they would not enter the coalition without the other faction. Gafni later met with Smotrich for coalition talks. Smotrich then met with Netanyahu. On 7 November, Netanyahu met with Ben-Gvir who demanded the Ministry of Public Security with expanded powers for himself and the Ministry of Education or Transport and Road Safety for Yitzhak Wasserlauf. A major demand among all of Netanyahu's allies was that the Knesset be allowed to ignore the rulings of the Supreme Court. Netanyahu met with the Noam faction leader and its sole MK Avi Maoz on 8 November after he threatened to boycott the coalition. He demanded complete control of the Western Wall by the Haredi rabbinate and removal of what he considered as anti-Zionist and anti-Jewish content in schoolbooks. President Isaac Herzog began consultations with heads of all the political parties on 9 November after the election results were certified. During the consultations, he expressed his reservations about Ben-Gvir becoming a member in the next government. Shas met with Likud for coalition talks on 10 November. By 11 November, Netanyahu had secured recommendations from 64 MKs, which constituted a majority. He was given the mandate to form the thirty-seventh government of Israel by President Herzog on 13 November. Otzma Yehudit and Noam officially split from Religious Zionism on 20 November as per a pre-election agreement. On 25 November, Otzma Yehudit and Likud signed a coalition agreement, under which Ben-Gvir will assume the newly created position of National Security Minister, whose powers would be more expansive than that of the Minister of Public Security, including overseeing the Israel Police and the Israel Border Police in the West Bank, as well as giving powers to authorities to shoot thieves stealing from military bases. Yitzhak Wasserlauf was given the Ministry for the Development of the Negev and the Galilee with expanded powers to regulate new West Bank settlements, while separating it from the "Periphery" portfolio, which will be given to Shas. The deal also includes giving the Ministry of Heritage to Amihai Eliyahu, separating it from the "Jerusalem Affairs" portfolio, the chairmanship of the Knesset's Public Security Committee to Zvika Fogel and that of the Special Committee for the Israeli Citizens' Fund to Limor Son Har-Melech, the post of Deputy Economic Minister to Almog Cohen, establishment of a national guard, and expansion of mobilization of reservists in the Border Police. Netanyahu and Maoz signed a coalition agreement on 27 November, under which the latter would become a deputy minister, would head an agency on Jewish identity in the Prime Minister's Office, and would also head Nativ, which processes the aliyah from the former Soviet Union. The agency for Jewish identity would have authority over educational content taught outside the regular curriculum in schools, in addition to the department of the Ministry of Education overseeing external teaching and partnerships, which would bring nonofficial organisations permitted to teach and lecture at schools under its purview. Likud signed a coalition agreement with the Religious Zionist Party on 1 December. Under the deal, Smotrich would serve as the Minister of Finance in rotation with Aryeh Deri, and the party will receive the post of a minister within the Ministry of Defense with control over the departments administering settlement and open lands under the Coordinator of Government Activities in the Territories, in addition to another post of a deputy minister. The deal also includes giving the post of Minister of Aliyah and Integration to Ofir Sofer, the newly created National Missions Ministry to Orit Strook, and the chairmanship of the Knesset's Constitution, Law and Justice Committee to Simcha Rothman. Likud and United Torah Judaism signed a coalition agreement on 6 December, to allow request for an extension to the deadline. Under it, the party would receive the Ministry of Construction and Housing, the chairmanship of the Knesset Finance Committee which will be given to Moshe Gafni, the Ministry of Jerusalem and Tradition (which would replace the Ministry of Jerusalem Affairs and Heritage), in addition to several posts of deputy ministers and chairmanships of Knesset committees. Likud also signed a deal with Shas by 8 December, securing interim coalition agreements with all of their allies. Under the deal, Deri will first serve as the Minister of Interior and Health, before rotating posts with Smotrich after two years. The party will also receive the Ministry of Religious Services and Welfare Ministries, as well as posts of deputy ministers in the Ministry of Education and Interior. The vote to replace then-incumbent Knesset speaker Mickey Levy was scheduled for 13 December, after Likud and its allies secured the necessary number of signatures for it. Yariv Levin of Likud was elected as an interim speaker by 64 votes, while his opponents Merav Ben-Ari of Yesh Atid and Ayman Odeh of Hadash received 45 and five votes respectively. Netanyahu asked Herzog for a 14-day extension after the agreement with Shas to finalise the roles his allied parties would play. Herzog on 9 December extended the deadline to 21 December. On that date, Netanyahu informed Herzog that he had succeeded in forming a coalition, with the new government expected to be sworn in by 2 January 2023. The government was sworn in on 29 December 2022. Timeline Israeli law stated that people convicted of crimes cannot serve in the government. An amendment to that law was made in late 2022, known colloquially as the Deri Law, to allow those who had been convicted without prison time to serve. This allowed Deri to be appointed to the cabinet. Shas leader Aryeh Deri was appointed to be Minister of Health, Minister of the Interior, and Vice Prime Minister in December 2022. He was fired in January 2023, following a Supreme Court decision that his appointment was unreasonable, since he had been convicted of fraud, and had promised not to seek government roles through a plea deal. In March 2023, Defence Minister Yoav Gallant called on the government to delay legislation related to the judicial reform. Prime Minister Netanyahu announced that he had been dismissed from his position, leading to the continuation of mass protests across the country (which had started in January in Tel Aviv). Gallant continued to serve as a minister as he had not received formal notice of dismissal, and two weeks later it was announced that Netanyahu had reversed his decision. Public Safety Minister Itamar Ben-Gvir (Otzma Yehudit leader) and Minister of Justice Yariv Levin (Likud) both threatened to resign if the judicial reform was delayed.[better source needed] After the outbreak of the Gaza war, five members of the National Unity party joined the government as ministers without portfolio, with leader Benny Gantz being made a member of the new Israeli war cabinet (along with Netanyahu and Gallant). As the war progressed, minister of national security Itamar Ben-Gvir threatened to leave the government if the war was ended. A month later in mid December, he again threatened to leave if the war did not maintain "full strength". Gideon Sa'ar stated on 16 March that his New Hope party would resign from the government and join the opposition if Prime Minister Benjamin Netanyahu did not appoint him to the Israeli war cabinet. Netanyahu did not do so, resulting in Sa'ar's New Hope party leaving the government nine days later, reducing the size of the coalition from 76 MKs to 72. Ben-Gvir and Bezalel Smotrich, of the National Religious Party–Religious Zionism party, have indicated that they will withdraw their parties from the government if the January 2025 Gaza war ceasefire is adopted, which would bring down the government. Ben-Gvir announced on 5 June that the members of his party would be allowed to vote as they wish, though his party resumed support on 9 June. On 18 May, Gantz set an 8 June deadline for withdrawal from the coalition, which was delayed by a day following the 2024 Nuseirat rescue operation. Gantz and his party left the government on 9 June, giving the government 64 seats in the Knesset. Sa'ar and his New Hope party rejoined the Netanyahu government on 30 September, increasing the number of seats held by the government to 68. The High Court of Justice ruled on 28 March 2024 that yeshiva funds would no longer be available for students who are "eligible for enlistment", effectively allowing ultra-Orthodox Jews to be drafted into the IDF. Attorney general Gali Baharav-Miara indicated on 31 March that the conscription process must begin on 1 April. The court ruled on 25 June that the IDF must begin to draft yeshiva students. Likud announced on 7 July that it would not put forward any legislation after Shas and United Torah Judaism said that they would boycott the plenary session over the lack of legislation dealing with the Haredi draft. The Ultra-Orthodox boycott continued for a second day, with UTJ briefly ending its boycott on 9 July to unsuccessfully vote in favor of a bill which would have weakened the Law of Return. Yuli Edelstein, who was replaced by Boaz Bismuth on the Foreign Affairs and Defense Committee in early August, published a draft version of the conscription law shortly before his ouster. Bismuth cancelled the work on the draft law in September 2025, which Edelstein called "a shame." Bismuth released the official version of the draft law in late November 2025. It weakened penalties for draft evaders, with Edelstein saying it was "the exact opposite" of the bill which he attempted to pass. Members of Otzma Yehudit resigned from the government on 19 January 2025 over the January 2025 Gaza war ceasefire, which took effect on 21 January. The members rejoined in March, following the "resumption" of the war in Gaza. Avi Maoz of the Noam party left the government in March 2025. On 4 June 2025, senior rabbis for United Torah Judaism Dov Lando and Moshe Hillel Hirsch instructed the party's MKs to pass a bill which would dissolve the Knesset. Yesh Atid, Yisrael Beytenu and The Democrats announced that they will "submit a bill" for dissolution on 11 June, with Yesh Atid tabling the bill on 4 June. There were also reports that Shas would vote in favor of Knesset dissolution amidst division within the governing coalition on Haredi conscription. This jeopardized the coalition's majority and would have triggered new elections if the bill passed. The following day, Agudat Yisrael, one of the United Torah Judaism factions, confirmed that it would submit a bill to dissolve the Knesset. Asher Medina, a Shas spokesman, indicated on 9 June that the party would vote in favor of a preliminary bill to dissolve the Knesset. The rabbis of Degel HaTorah instructed the parties' MKs on 12 June 2025 to oppose the dissolution of the Knesset, which was followed by Yuli Edelstein and the Shas and Degel HaTorah parties announcing that a deal had been reached, with "rabbinical leaders" telling their parties to delay the dissolution vote by a week. Shas and Degel HaTorah voted against the dissolution bill, which led to the bill failing its preliminary reading in a vote of 61 against and 53 in favor. MKs Ya'akov Tessler and Moshe Roth of Agudat Yisrael voted in favor of dissolution. Another dissolution bill will be unable to be brought forward for six months. If the bill had passed its preliminary reading, in addition to three more readings, an election would have been held in approximately three months; The Jerusalem Post posited it would have been held in October. Degel HaTorah announced on 14 July 2025 that it would leave the government because members of the party were dissatisfied after viewing the proposed draft bill by Yuli Edelstein regarding Haredi exemptions from the Israeli draft. Several hours later, Agudat Yisrael announced that it would also leave the government. Deputy Transportation Minister Uri Maklev, Moshe Gafni, the head of the Knesset Finance Committee, Ya'akov Asher, the head of the Knesset Interior and Environment Protection Committee and Jerusalem Affairs minister Meir Porush all submitted their resignations, with their resignations taking effect in 48 hours. Sports Minister Ya'akov Tessler and "Special Committee for Public Petitions Chair" Yitzhak Pindrus also submitted resignations. Yisrael Eichler submitted his resignation as the "head of the Knesset Labor and Welfare Committee" the same day. The resignations will leave Netanyahu's government with a 60-seat majority in the Knesset, as Avi Maoz, of the Noam party, left the government in March 2025. Despite Edelstein's ouster in August, a spokesman for UTJ head Yitzhak Goldknopf remarked that it would not change the faction's withdrawal from the government. The religious council for Shas, called the Moetzet Chachmei HaTorah, instructed the party on 16 July to leave the government, but stay in the coalition. The following day, various cabinet ministers submitted their resignations, including "Interior Minister Moshe Arbel, Social Affairs Minister Ya'akov Margi and Religious Services Minister Michael Malchieli." Malchieli reportedly has postponed his resignation so he could attend a 20 July meeting of the panel investigating whether attorney general Gali Baharav-Miara should be dismissed. Deputy Minister of Agriculture Moshe Abutbul, Minister of Health Uriel Buso and Haim Biton, a minister in the Education Ministry, also submitted their resignation letters, while Arbel retracted his resignation letter. The last cabinet member from the party to submit it was Labor Minister Yoav Ben-Tzur. The ministers who resigned will return to the Knesset, replacing MKs Moshe Roth, Yitzhak Pindrus and Eliyahu Baruchi. Members of government Listed below are the current ministers in the government: Principles and priorities According to the agreements signed between Likud and each of its coalition partners, and the incoming government's published guideline principles, its stated priorities are to combat the cost of living, further centralize Orthodox control over the state religious services, pass judicial reforms which include legislation to reduce judicial controls on executive and legislative power, expand settlements in the West Bank, and consider an annexation of the West Bank. Before the vote of confidence in his new government in the Knesset, Netanyahu presented three top priorities for the new government: internal security and governance, halting the nuclear program of Iran, and the development of infrastructure, with a focus on further connecting the center of the country with its periphery. Policies The government's flagship program, centered around reforms in the judicial branch, drew widespread criticism. Critics said it would have negative effects on the separation of powers, the office of the Attorney General, the economy, public health, women and minorities, workers' rights, scientific research, the overall strength of Israel's democracy and its foreign relations. After weeks of public protests on Israel's streets, joined by a growing number of military reservists, Minister of Defense Yoav Gallant spoke against the reform on 25 March, calling for a halt of the legislative process "for the sake of Israel's security". The next day, Netanyahu announced that he would be removed from his post, sparking another wave of protest across Israel and ultimately leading to Netanyahu agreeing to pause the legislation. On 10 April, Netanyahu announced that Gallant would keep his post. On 27 March 2023, after the public protests and general strikes, Netanyahu announced a pause in the reform process to allow for dialogue with opposition parties. However, negotiations aimed at reaching a compromise collapsed in June, and the government resumed its plans to unilaterally pass parts of the legislation. On 24 July 2023, the Knesset passed a bill that curbs the power of the Supreme Court to declare government decisions unreasonable; on 1 January 2024, the Supreme Court struck the bill down. The Knesset passed a "watered-down" version of the judicial reform package in late March 2025 which "changes the composition" of the judicial selection committee. In December 2022 Minister of National Security Itamar Ben-Gvir sought to amend the law that regulates the operations of the Israel Police, such that the ministry will have more direct control of its forces and policies, including its investigative priorities. Attorney General Gali Baharav-Miara objected to the draft proposal, raising concerns that the law would enable the politicization of police work, and the draft was amended to partially address those concerns. Nevertheless, in March 2023 Deputy Attorney General Gil Limon stated that the Attorney General's fears had been realized, referring to several instances of ministerial involvement in the day-to-day work of the otherwise independent police force – statements that were repeated by the Attorney General herself two days later. Separately, Police Commissioner Kobi Shabtai instructed Deputy Commissioners to avoid direct communication with the minister, later stating that "the Israel Police will remain apolitical, and act only according to law". Following appeals by the Association for Civil Rights in Israel and the Movement for Quality Government in Israel, the High Court of Justice instructed Ben-Gvir "to refrain from giving operational directions to the police... [especially] as regards to protests and demonstrations against the government." As talks of halting the judicial reform gained wind during March 2023, Minister of National Security Itamar Ben-Gvir threatened to resign if the legislation implementing the changes was suspended. To appease Ben-Gvir, Prime Minister Netanyahu announced that the government would promote the creation of a new National Guard, to be headed by Ben-Gvir. On 29 March, thousands of Israelis demonstrated in Tel Aviv, Haifa and Jerusalem against this decision. On 1 April, the New York Times quoted Gadeer Nicola, head of the Arab department at the Association for Civil Rights in Israel, as saying "If this thing passes, it will be an imminent danger to the rights of Arab citizens in this country. This will create two separate systems of applying the law. The regular police which will operate against Jewish citizens — and a militarized militia to deal only with Arab citizens." The same day, while speaking on Israel's Channel 13 about those whom he'd like to see enlist in the National Guard, Ben-Gvir specifically mentioned La Familia, the far-right fan club of the Beitar Jerusalem soccer team. On 2 April, Israel's cabinet approved the establishment of a law enforcement body that would operate independently of the police, under Ben-Gvir's authority. According to the decision, the Minister was to establish a committee chaired by the Director General of the Ministry of National Security, with representatives of the ministries of defense, justice and finance, as well as the police and the IDF, to outline the operations of the new organization. The committee's recommendations will be submitted to the government for consideration. Addressing a conference on 4 April, Police Commissioner Kobi Shabtai said that he is not opposed to the establishment of a security body which would answer to the police, but "a separate body? Absolutely not." The police chief said he had warned Ben-Gvir that the establishment of a security body separate from the police is "unnecessary, with extremely high costs that may harm citizens' personal security." During a press conference on 10 April, Prime Minister Netanyahu said, in what has been seen by some news outlets as a concession to the protesters, that "This will not be anyone's militia, it will be a security body, orderly, professional, that will be subordinate to one of the [existing] security bodies." The committee established by the government recommended the government to order the establishment of the National Guard immediately while allocating budgets. The National Guard, under whose command will be a superintendent of the police, will not be subordinate to Ben-Gvir. It will be subordinate to the police commissioner and will be part of Israel Border Police. The Ministry of Defense and Finance opposed the conclusions. The Israeli National Security Council called for further discussion on this. The coalition's efforts to expand the purview of Rabbinical courts; force some organizations, such as hospitals, to enforce certain religious practices; amend the Law Prohibiting Discrimination to allow gender segregation and discrimination on the grounds of religious belief; expand funding for religious causes; and put into law the exemption of yeshiva and kolel students from conscription have drawn criticism. According to the Haaretz op-ed of 7 March 2023, "the current coalition is interested... in modifying the public space so it suits the religious lifestyle. The legal coup is meant to castrate anyone who can prevent it, most of all the HCJ." Several banks and institutional investors, including the Israel Discount Bank and AIG have committed to avoid investing in, or providing credit to any organization that will discriminate against others on ground of religion, race, gender or sexual orientation. A series of technology companies and investment firms including Wiz, Intel Israel, Salesforce and Microsoft Israel Research and Development, have criticized the proposed changes to the Law Prohibiting Discrimination, with Wiz stating that it will require its suppliers to commit to preventing discrimination. Over sixty prominent law firms pledged that they will neither represent, nor do business with discriminating individuals and organizations. Insight Partners, a major private equity fund operating in Israel, released a statement warning against intolerance and any attempt to harm personal liberties. Orit Lahav, chief executive of the women's rights organization Mavoi Satum ("Dead End"), said that "the Rabbinical courts are the most discriminatory institution in the State of Israel... Limiting the HCJ[d] while expanding the jurisdiction of the Rabbinical courts would... cause significant harm to women." Anat Thon Ashkenazy, Director of the Center for Democratic Values and Institutions at the Israel Democracy Institute, said that "almost every part of the reform could harm women... the meaning of an override clause is that even if the court says that the law on gender segregation is illegitimate, is harmful, the Knesset could say 'Okay, we say otherwise'". She added that "there is a very broad institutional framework here, after which there will come legislation that harms women's right and we will have no way of protecting or stopping it." During July 2023, 20 professional medical associations signed a letter of position warning against the ramifications to public health that would result from the exclusion of women from the public sphere. They cited, among others, a rise in prevalence of risk factors for cardiovascular disease, pregnancy-related ailments, psychological distress, and the risk of suicide. On 30 July the Knesset passed an amendment to penal law adding sexual offenses to those offenses whose penalty can be doubled if done on grounds of "nationalistic terrorism, racism or hostility towards a certain community". According to MK Limor Son Har-Melech, the bill is meant to penalize any individual who "[intends to] harm a woman sexually based on her Jewishness". The law was criticized by MK Gilad Kariv as "populist, nationalistic, and dangerous towards the Arab citizens of Israel", and by MK Ahmad Tibi as a "race law", and was objected to by legal advisors at the Ministry of Justice and the Knesset Committee on National Security. Activist Orit Kamir wrote that "the amendment... is neither feminist, equal, nor progressive, but the opposite: it subordinates women's sexuality to the nationalistic, racist patriarchy. It hijacks the Law for Prevention of Sexual Harassment to serve a world view that tags women as sexual objects that personify the nation's honor." Yael Sherer, director of the Lobby to Combat Sexual Violence, criticized the law as being informed by dated ideas about sexual assault, and proposed that MKs "dedicate a session... to give victims of sexual assault an opportunity to come out of the darkness... instead of [submitting] declarative bills that change nothing and are not meant but for grabbing headlines". In Israel, during 2022, 24 women "were murdered because they were women," which was an increase of 50% compared to 2021. A law permitting courts to order men subject to a restraining order following domestic violence offenses to wear electronic tags was drafted during the previous Knesset and had passed its first reading unanimously. On 22 March 2023, the Knesset voted to reject the bill. It had been urged to do so by National Security Minister Itamar Ben-Gvir, who said that the bill was unfair to men. Earlier in the week, Ben-Gvir had blocked the measure from advancing in the ministerial legislative committee. The MKs voting against the bill included Prime Minister Netanyahu. The Association of Families of Murder Victims said that by rejecting the law, National Security Minister Itamar Ben-Gvir "brings joy to violent men and abandons the women threatened with murder… unsupervised restraining orders endanger women's lives even more. They give women the illusion of being protected, and then they are murdered." MK Pnina Tamano-Shata, chairwoman of the Knesset Committee on the Status of Women and Gender Equality, said that "the coalition proved today that it despises women's lives." The NGO Amutat Bat Melech [he], which assists Orthodox and ultra-Orthodox women who suffer from domestic violence, said that: "Rejecting the electronic bracelet bill is disconnected from the terrible reality of seven femicides since the beginning of the year. This is an effective tool of the first degree that could have saved lives and reduced the threat to women suffering from domestic violence. This is a matter of life and death, whose whole purpose is to provide a solution to defend women." The agreement signed by the coalition parties includes the setting up of a committee to draft changes to the Law of Return. Israeli religious parties have long demanded that the "grandchild clause" of the Law of Return be cancelled. This clause grants citizenship to anyone with at least one Jewish grandparent, as long as they do not practice another religion. If the grandchild clause were to be removed from the Law of Return then around 3 million people who are currently eligible for aliyah would no longer be eligible. The heads of the Jewish Agency, the Jewish Federations of North America, the World Zionist Organization and Keren Hayesod sent a joint letter to Prime Minister Netanyahu, expressing their "deep concern" about any changes to the Law of Return, adding that "Any change in the delicate and sensitive status quo on issues such as the Law of Return or conversion could threaten to unravel the ties between us and keep us away from each other." The Executive Council of Australian Jewry and the Zionist Federation of Australia issued a joint statement saying "We… view with deep concern… proposals in relation to religious pluralism and the law of return that risk damaging Israel's… relationship with Diaspora Jewry." On 19 March 2023, Israeli Finance Minister Bezalel Smotrich spoke in Paris at a memorial service for a Likud activist. The lectern at which Smotrich spoke was covered with a flag depicting the 'Greater Land of Israel,' encompassing the whole of Mandatory Palestine, as well as Trans-Jordan. During his speech, Smotrich said that "there's no such thing as Palestinians because there's no such thing as a Palestinian people." He added that the Palestinian people are a fictitious nation invented only to fight the Zionist movement, asking "Is there a Palestinian history or culture? There isn't any." The event received widespread media coverage. On 21 March, a spokesman for the US State Department sharply criticized Smotrich's comments. "The comments, which were delivered at a podium adorned with an inaccurate and provocative map, are offensive, they are deeply concerning, and, candidly, they're dangerous. The Palestinians have a rich history and culture, and the United States greatly values our partnership with the Palestinian people," he said. The Jordanian Foreign Ministry also voiced disapproval: "The Israeli Minister of Finance's use, during his participation in an event held yesterday in Paris, of a map of Israel that includes the borders of the Hashemite Kingdom of Jordan and the occupied Palestinian territories represents a reckless inflammatory act, and a violation of international norms and the Jordanian-Israeli peace treaty." Additionally, a map encompassing Mandatory Palestine and Trans-Jordan with a Jordanian flag on it was placed on a central lectern in the Jordanian Parliament. Jordan's parliament voted to expel the Israeli ambassador. Israel's Ministry of Foreign Affairs released a clarification relating to the matter, stating that "Israel is committed to the 1994 peace agreement with Jordan. There has been no change in the position of the State of Israel, which recognizes the territorial integrity of the Hashemite Kingdom of Jordan". Ahead of a Europe Day event due to take place on 9 May 2023, far-right wing National Security Minister Itamar Ben-Gvir was assigned as a representative of the government and a speaker at the event by the government secretariat, which deals with placing ministers at receptions on the occasion of the national days of the foreign embassies. The European Union requested that Ben-Gvir not attend, but the government did not make changes to the plan. On 8 May, the European delegation to Israel cancelled the reception, stating that: "The EU Delegation to Israel is looking forward to celebrating Europe Day on May 9, as it does every year. Regrettably, this year we have decided to cancel the diplomatic reception, as we do not want to offer a platform to someone whose views contradict the values the European Union stands for. However, the Europe Day cultural event for the Israeli public will be maintained to celebrate with our friends and partners in Israel the strong and constructive bilateral relationship". Israel's Opposition Leader Yair Lapid stated: "Sending Itamar Ben-Gvir to a gathering of EU ambassadors is a serious professional mistake. The government is embarrassing a large group of friendly countries, jeopardizing future votes in international institutions, and damaging our foreign relations. Last year, after a decade of efforts, we succeeded in signing an economic-political agreement with the European Union that will contribute to the Israeli economy and our foreign relations. Why risk it, and for what? Ben-Gvir is not a legitimate person in the international community (and not really in Israel either), and sometimes you have to be both wise and just and simply send someone else". On 23 February 2023, Defense Minister Gallant signed an agreement assigning governmental powers in the West Bank to a body to be headed by Minister Bezalel Smotrich, who will effectively become the governor of the West Bank, controlling almost all areas of life in the area, including planning, building and infrastructure. Israeli governments have hitherto been careful to keep the occupation as a military government. The temporary holding of power by an occupying military force, pending a negotiated settlement, is a principle of international law – an expression of the prohibition against obtaining sovereignty through conquest that was introduced in the wake of World War II. An editorial in Haaretz noted that the assignment of governmental powers in the West Bank to a civilian governor, alongside the plan to expand the dual justice system so that Israeli law will apply fully to settlers in the West Bank, constitutes de jure annexation of the West Bank. On 26 February 2023, following the 2023 Huwara shooting in which two Israelis were killed by an unidentified attacker, hundreds of Israeli settlers attacked the Palestinian town of Huwara and three nearby villages, setting alight hundreds of Palestinian homes (some with people in them), businesses, a school, and numerous vehicles, killing one Palestinian man and injuring 100 others. Bezalel Smotrich subsequently called on Twitter for Huwara to be "wiped out" by the Israeli government. Zvika Fogel MK, of the ultra-nationalist Otzma Yehudit, which forms part of the governing coalition, said that he "looks very favorably upon" the results of the rampage. Members of the coalition proposed an amendment to the Disengagement Law, which would allow Israelis to resettle settlements vacated during the 2005 Israeli disengagement from Gaza and the northern West Bank. The evacuated settlements were considered illegal under international law, according to most countries. The proposal was approved for voting by the Foreign Affairs and Defense Committee on 9 March 2023, while the committee was still waiting for briefing materials from the NSS, IDF, MFA and Shin Bet, and was passed on 21 March. The US has requested clarification from Israeli ambassador Michael Herzog. A US State Department spokesman stated that "The U.S. strongly urges Israel to refrain from allowing the return of settlers to the area covered by the legislation, consistent with both former Prime Minister Sharon and the current Israeli Government's commitment to the United States," noting that the actions represent a clear violation of undertakings given by the Sharon government to the Bush administration in 2005 and Netanyahu's far-right coalition to the Biden administration the previous week. Minister of Communication Shlomo Karhi had initially intended to cut the funding of the Israeli Public Broadcasting Corporation (also known by its blanket branding Kan) by 400 million shekels – roughly half of its total budget – closing several departments, and privatizing content creation. In response, the Director-General of the European Broadcasting Union, Noel Curran, sent two urgent letters to Netanyahu, expressing his concerns and calling on the Israeli government to "safeguard the independence of our Member KAN and ensure it is allowed to operate in a sustainable way, with funding that is both stable, adequate, fair, and transparent." On 25 January 2023, nine journalist organizations representing some of Kan's competitors issued a statement of concern, acknowledging the "important contribution of public broadcasting in creating a worthy, unbiased and non-prejudicial journalistic platform", and noting that "the existence of the [broadcasting] corporation as a substantial public broadcast organization strengthens media as a whole, adding to the competition in the market rather than weakening it." They also expressed their concern that the "real reason" for the proposal was actually "an attempt to silence voices from which... [the Minister] doesn't always draw satisfaction". The same day, hundreds of journalists, actors and filmmakers protested in Tel Aviv. The proposal was eventually put on hold. On 22 February 2023 it was reported that Prime Minister Netanyahu was attempting to appoint his close associate Yossi Shelley as the deputy to the National Statistician — a highly sensitive position in charge of providing accurate data for decision makers. The appointment of Shelley, who did not possess the required qualifications for the role, was withdrawn following publication. In its daily editorial, Haaretz tied this attempt with the judicial reform: "once they take control of the judiciary, law enforcement and public media, they wish to control the state's data base, the dry numerical data it uses to plan its future". Netanyahu also proposed Avi Simhon for the role, and eventually froze all appointments at the Israel Central Bureau of Statistics. Also on 22 February 2023, it was revealed that Yoav Kish, the Minister of Education, was promoting a draft government decision change to the National Library of Israel board of directors which would grant him more power over the institution. In response, the Hebrew University — which owned the library until 2008 – announced that if the draft is accepted, it will withdraw its collections from the library. The university's collections, which according to the university constitute some 80% of the library's collection, include the Agnon archive, the original manuscript of Hatikvah, and the Rothschild Haggadah, the oldest known Haggadah. A group of 300 authors and poets signed an open letter against the move, further noting their objection against "political takeover" of public broadcasting, as well as "any legislation that will castrate the judiciary and damage the democratic foundations of the state of Israel". Several days later, it was reported that a series of donors decided to withhold their donations to the library, totaling some 80 million shekels. On 3 March a petition against the move by 1,500 academics, including Israel Prize laureates, was sent to Kish. The proposal has been seen by some as retribution against Shai Nitzan, the former State Attorney and the library's current rector. On 5 March it was reported that the Legal Advisor to the Ministry of Finance, Asi Messing, was withholding the proposal. According to Messing, the proposal – which was being promoted as part of the Economic Arrangements Law – "was not reviewed... by the qualified personnel in the Ministry of Finance, does not align with any of the common goals of the economic plan, was not agreed to by myself and was not approved by the Attorney General." As of February 2023, the government has been debating several proposals that will significantly weaken the Ministry of Environmental Protection, including reducing the environmental regulation of planning and development and electricity production. One of the main proposals, the transferal of a 3 billion shekel fund meant to finance waste management plants from the Ministry of Environmental Protection to the Ministry of the Interior, was eventually withdrawn. The Minister of Environmental Protection, Idit Silman, has been criticized for using for meeting with climate change denialists, for wasteful and personally-motivated travel on the ministry's expense, for politicizing the role, and for engaging in political activity on the ministry's time. The government has been noted for an unusually high number of dismissals and resignations of senior career civil servants, and for the frequent attempts to replace them with candidates with known political associations, who are often less competent. According to sources, Netanyahu and people in his vicinity are seeking out civil servants who were appointed by the previous government, intent on replacing them with people loyal to him. Governmental nominees for various positions have been criticized for lack of expertise. In addition to the nominee to the position of Deputy National Statistician (see above), the Director General of the Ministry of Finance, Shlomi Heisler; the Director General of the Ministry of Justice, Itamar Donenfeld; and the Director General of Ministry of Transport, Moshe Ben Zaken, have all been criticized for incompetence, lack of familiarity with their Ministries' subject matter, lack of interest in the job, or lack of experience in managing large organizations. It has been reported that in some ministries, senior officials were enacting slowdowns as a means for dealing with the new ministers and director generals. On 28 July the director general of the Ministry of Education resigned, citing as reason the societal "rift". Asaf Zalel, a retired Air Force Brigadier General, was appointed in January. When asked about attempts to appoint his personal friend and attorney to the board of directors of a state-owned company, Minister David Amsalem replied: "that is my job, due to my authority to appoint directors. I put forward people that I know and hold in esteem". Under Minister of Transport Miri Regev, the ministry has either dismissed or lost the heads of the National Public Transport Authority, Israel Airports Authority, National Road Safety Authority, Israel Railways, and several officials in Netivei Israel. The current chair of Netivei Israel is Likud member and Regev associate Yigal Amadi, and the legal counsel is Einav Abuhzira, daughter of a former Likud branch chair. Abuhzira was appointed instead of Elad Berdugo, nephew of Netanyahu surrogate Yaakov Bardugo, after he was disqualified for the role by the Israel Government Companies Authority. In July 2023 the Ministry of Communications, Shlomo Karhi, and the minister in charge of the Israel Government Companies Authority, Dudi Amsalem, deposed the chair of the Israel Postal Company, Michael Vaknin. The chair, who was hired to lead the company's financial recovery after years of operational loss and towards privatization, has gained the support of officials at the Authority and at the Ministry of Finance; nevertheless, the ministers claimed that his performance is inadequate, and nominated in his place Yiftah Ron-Tal, who has known ties to Netanyahu and Smotrich. They also nominated four new directors, two of which have known political associations, and a third who was a witness in Netanyahu's trial. The coalition is allowed to spend a portion of the state's budget on a discretionary basis, meant to coax member parties to reach an agreement on the budget. As of May 2023, the government was pushing an allocation of over 13 billion shekels over two years - almost seven times the amount allocated by the previous government. Most of the funds will be allocated for uses associated with the religious, orthodox and settler communities. The head of the Budget Department at the Ministry of Finance, Yoav Gardos, objected to the allocations, claiming they would exacerbate unemployment in the Orthodox community, which is projected to cost the economy a total of 6.7 trillion shekels in lost produce by 2065. At the onset of the Gaza war and the declaration of a state of national emergency, Minister of Finance Bezalel Smotrich instructed government agencies to continue with the planned distribution of discretionary funds. Corruption During March 2023, the government was promoting an amendment to the Law on Public Service (Gifts) that would allow Netanyahu to receive donations to fund his legal defense. The amendment follows a decision by the High Court of Justice (HCJ) that forced Netanyahu to refund US$270,000 given to him and his wife by his late cousin, Nathan Mileikowsky, for their legal defense. This is in contrast to past statements by Minister of Justice Yariv Levin, who spoke against the possible conflict of interests that can result from such transactions. The bill was opposed by the Attorney General Gali Baharav-Miara, who stressed that it could "create a real opportunity for governmental corruption", and was eventually withdrawn at the end of March. As of March 2023, the coalition was promoting a bill that would prevent judicial review of ministerial appointments. The bill is intended to prevent the HCJ from reviewing the appointment of the twice-convicted chairman of Shas, Aryeh Deri (convicted of bribery, fraud, and breach of trust), to a ministerial position, after his previous appointment was annulled on grounds of unreasonableness. The bill follows on the heels of another amendment, that relaxed the ban on the appointment of convicted criminals, so that Deri - who was handed a suspended sentence after his second conviction - could be appointed. The bill is opposed by the Attorney General, as well as by the Knesset Legal Adviser, Sagit Afik. Israeli law allows for declaring a Prime Minister (as well as several other high-ranking public officials) to be temporarily or permanently incapacitated, but does not specify the conditions which can lead to a declaration of incapacitation. In the case of the Prime Minister, the authority to do so is given to the Attorney General. In March 2023, the coalition advanced a bill that passes this authority from the Attorney General to the government with the approval of the Knesset committee, and clarified that incapacitation can only result from medical or mental conditions. On 3 January 2024, the Supreme Court ruled by a majority of 6 out of 11 that the validity of the law will be postponed to the next Knesset because the bill in its immediate application is a personal law and is intended to serve a distinct personal purpose. Later, the court rejected a petition regarding the definition of Netanyahu as an incapacitated prime minister due to his ongoing trial and conflict of interests. Notes References External links
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[SOURCE: https://en.wikipedia.org/wiki/National_Guard_(United_States)] \| [TOKENS: 8485]
Contents National Guard (United States) The National Guard is a military reserve organization of the United States Department of Defense (DoD). It is composed of reserve components of the United States Army and the United States Air Force: the Army National Guard and the Air National Guard, respectively. It is based in each of the 50 U.S. states, the District of Columbia, and three U.S. territories.[a] Guard components are part of the U.S. Army and the U.S. Air Force when activated for federal missions. The legal basis of the National Guard is Congress's Article I, Section 8 enumerated power to "raise and support Armies". All members of the National Guard are also members of the organized militia of the United States as defined by 10 U.S.C. § 246. National Guard units are under the dual control of U.S. state or territorial governments and the U.S. federal government. The majority of National Guard soldiers and airmen hold a civilian job full-time while serving part-time as a National Guard member. These part-time guardsmen are augmented by a full-time cadre of Active Guard and Reserve (AGR) personnel in both the Army National Guard and Air National Guard, plus Army Reserve Technicians in the Army National Guard and Air Reserve Technicians (ART) in the Air National Guard. Colonial militias were formed during the British colonization of the Americas from the 17th century onward. The first colony-wide militia was formed by Massachusetts in 1636 by merging small, older local units, and several National Guard units can be traced back to this militia. The various colonial militias became state militias when the United States became independent. The title "National Guard" was used in 1824 by some New York State militia units, named after the French National Guard in honor of the Marquis de Lafayette. "National Guard" became a standard nationwide militia title in 1903, and has specifically indicated reserve forces under mixed state and federal control since 1933. In the 21st century, state-level Defend the Guard legislation has been proposed that would require a formal congressional declaration of war before National Guard units can be deployed in overseas combat. Origins On December 13, 1636, the first militia regiments in North America were organized in Massachusetts. Based upon an order of the Massachusetts Bay Colony's General Court, the colony's militia was organized into three permanent regiments to better defend the colony. Today, the descendants of these first regiments - the 181st Infantry, the 182nd Infantry, the 101st Field Artillery, and the 101st Engineer Battalion of the Massachusetts Army National Guard – share the distinction of being the oldest units in the U.S. military. December 13, 1636, thus marks the beginning of the organized militia, and the birth of the National Guard's oldest organized units is symbolic of the founding of all the state, territory, and District of Columbia militias that collectively make up today's National Guard. Previous to this, unregulated militias were mustered sporadically in Spanish and English colonies. On September 16, 1565, in the newly established Spanish town of St. Augustine, militia were assigned to guard the expedition's supplies while their leader, Pedro Menéndez de Avilés, took the regular troops north to attack the French settlement at Fort Caroline on the St. Johns River. This Spanish militia tradition and the tradition that was established in England's North American colonies provided the basic nucleus for Colonial defense in the New World. The militia tradition continued with the New World's first permanent English settlements. Jamestown Colony (established in 1607) and Plymouth Colony (established in 1620) both had militia forces, which initially consisted of every able-bodied adult male. By the mid-1600s every town had at least one militia company (usually commanded by an officer with the rank of captain), and the militia companies of a county formed a regiment (usually commanded by an officer with the rank of major in the 1600s or a colonel in the 1700s). The first federal laws regulating the militia were the Militia acts of 1792. From the nation's founding through the early 1900s, the United States maintained only a minimal army and relied on state militias, directly related to the earlier Colonial militias to supply the majority of its troops. As a result of the Spanish–American War, Congress was called upon to reform and regulate state militias' training and qualification. U.S. Senator Charles W. F. Dick, a Major General in the Ohio National Guard and the chair of the Committee on the Militia, sponsored the 1903 Dick Act towards the end of the 57th U.S. Congress. Under this legislation, passed January 21, 1903, the organized militia of the states were given federal funding and required to conform to Regular Army organization within five years. The act also required National Guard units to attend twenty four drills and five days annual training a year, and, for the first time, provided for pay for annual training. In return for the increased federal funding which the act made available, militia units were subject to inspection by Regular Army officers, and had to meet certain standards. It required the states to divide their militias into two sections. The law recommended the title "National Guard" for the first section, known as the organized militia, and "Reserve Militia" for all others. During World War I, Congress passed the National Defense Act of 1916, which required the use of the term "National Guard" for the state militias and further regulated them. Congress also authorized the states to maintain Home Guards, which were reserve forces outside the National Guards deployed by the federal government. In 1933, with the passage of the National Guard Mobilization Act, Congress finalized the split between the National Guard and the traditional state militias by mandating that all federally funded soldiers take a dual enlistment/commission and thus enter both the state National Guard and the National Guard of the United States, a newly created federal reserve force. The National Defense Act of 1947 created the Air Force as a separate branch of the Armed Forces and concurrently created the Air National Guard of the United States as one of its reserve components, mirroring the Army's structure. Organization The National Guard of the several states, territories, and the District of Columbia serves as part of the first line of defense for the United States. The state National Guard is organized into units stationed in each of the 50 states, three territories, and the District of Columbia, and operates under their respective state or territorial governor, except in the instance of Washington, D.C., where the National Guard operates under the President of the United States or their designee. The governors exercise control through the state adjutants general. Governors may call up the National Guard for active duty to help respond to domestic emergencies and disasters, such as hurricanes, floods, and earthquakes. The National Guard is administered by the National Guard Bureau, a joint activity of the Army and Air Force under the Department of Defense. The National Guard Bureau provides a communication channel for state National Guards to the DoD. The National Guard Bureau also provides policies and requirements for training and funds for state Army National Guard and state Air National Guard units, the allocation of federal funds to the Army National Guard and the Air National Guard, and other administrative responsibilities prescribed under 10 U.S.C. § 10503. The National Guard Bureau is headed by the Chief of the National Guard Bureau (CNGB), who is a four-star general in the Army or Air Force and is a member of the Joint Chiefs of Staff. The National Guard Bureau is headquartered in Arlington County, Virginia, and is a joint activity of the Department of Defense to conduct all the administrative matters pertaining to the Army National Guard and the Air National Guard. The chief is either an Army or an Air Force four-star general officer, and is the senior uniformed National Guard officer, and is a member of the Joint Chiefs of Staff. In this capacity, he serves as a military adviser to the President, the Secretary of Defense, the National Security Council and is the Department of Defense's official channel of communication to the Governors and to State Adjutants General on all matters pertaining to the National Guard. He is responsible for ensuring that the more than half a million Army and Air National Guard personnel are accessible, capable, and ready to protect the homeland and to provide combat resources to the Army and the Air Force. He is appointed by the President in his capacity as Commander in Chief. The respective state National Guards are authorized by the Constitution of the United States. As originally drafted, the Constitution recognized the existing state militias, and gave them vital roles to fill: "to execute the Laws of the Union, suppress Insurrections and repel Invasion." (Article I, Section 8, Clause 15). The Constitution distinguished "militias," which were state entities, from "Troops," which were unlawful for states to maintain without Congressional approval. (Article I, Section 10, Clause 3). Under current law, the respective state National Guards and the State Defense Forces are authorized by Congress to the states and are referred to as "troops." 32 U.S.C. § 109. Although originally state entities, the Constitutional "Militia of the Several States" were not entirely independent because they could be federalized. According to Article I, Section 8; Clause 15, the United States Congress is given the power to pass laws for "calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions." Congress is also empowered to come up with the guidelines "for organizing, arming, and disciplining, the Militia, and for governing such Part of them as may be employed in the Service of the United States, reserving to the States respectively, the Appointment of the Officers, and the Authority of training the Militia according to the discipline prescribed by Congress" (clause 16). The President of the United States is the commander-in-chief of the state militias "when called into the actual Service of the United States." (Article II, Section 2). The traditional state militias were redefined and recreated as the "organized militia"—the National Guard, via the Militia Act of 1903. They were now subject to an increasing amount of federal control, including having arms and accoutrements supplied by the central government, federal funding, and numerous closer ties to the Regular Army. Proposals for the establishment of a National Guard component for the United States Space Force has existed for years, even as early as 2018. A report by the Congressional Budget Office indicated that the creation of a Space National Guard, as proposed by the National Guard Bureau, would cost an additional $100 million per year in operations and support costs, with a onetime cost of $20 million in the construction of new facilities. This report directly contradicted the statement by the National Guard Bureau that a Space National Guard would only have a onetime cost at creation, and then be cost-neutral. The report also analyzed the cost of the creation of a larger Space National Guard, which would be ~33% of the Space Force, calculating that the annual operating cost would be $385 million to $490 million per year. However, several states already have existing National Guard space operations, including Alaska, California, Colorado, Florida, New York, Arkansas, and Ohio; there is also a space component in the Guam Air National Guard. Standards Both the Army National Guard and Air National Guard are expected to adhere to the same moral and physical standards as their "full-time" active duty and "part-time" reserve federal counterparts. The same ranks and insignia of the U.S. Army and U.S. Air Force are used by the Army National Guard and the Air National Guard, respectively, and National Guard members are eligible to receive all United States military awards. The respective state National Guards also bestow state awards for services rendered both at home and abroad. Under Army and Air Force regulations, these awards may be worn while in state, but not federal, duty status. Regular Army and Army Reserve soldiers are also authorized to accept these awards, but are not authorized to wear them. Other organizations Many states also maintain their own state defense forces. Although not federal entities like the National Guard of the United States, these forces are components of the state militias like the individual state National Guards. These forces were created by Congress in 1917 as a result of the state National Guards' being deployed and were known as Home Guards. In 1940, with the onset of World War II and as a result of its federalizing the National Guard, Congress amended the National Defense Act of 1916, and authorized the states to maintain "military forces other than National Guard." This law authorized the War Department to train and arm the new military forces that became known as State Guards. In 1950, with the outbreak of the Korean War and at the urging of the National Guard, Congress reauthorized the separate state military forces for a time period of two years. These state military forces were authorized military training at federal expense, and "arms, ammunition, clothing, and equipment," as deemed necessary by the Secretary of the Army. In 1956, Congress finally revised the law and authorized "State defense forces" permanently under Title 32, Section 109, of the United States Code. Although there are no Naval or Marine Corps components of the National Guard of the United States, there is a Naval Militia authorized under federal law, 10 U.S.C. § 8901. Like the soldiers and airmen in the National Guard of the United States, members of the Naval Militia are authorized federal appointments or enlistments at the discretion of the Secretary of the Navy.10 U.S.C. § 7852. To receive federal funding and equipment, a state naval militia must be composed of at least 95% of Navy, Coast Guard, or Marine Corps Reservists. As such, some states maintain such units. Some states also maintain naval components of their State Defense Force. Recently, Alaska, California, New Jersey, New York, South Carolina, Texas and Ohio have had or currently maintain naval militias. Other states have laws authorizing them but do not currently have them organized. To receive federal funding, as is the case in the National Guard, a state must meet specific requirements such as having a set percentage of its members in the federal reserves.10 U.S.C. § 7851. Duties and administrative organization National Guard units can be mobilized for federal active duty to supplement regular armed forces during times of war or national emergency declared by Congress, the President or the Secretary of Defense. They can also be activated for service in their respective states upon declaration of a state of emergency by the governor of the state or territory where they serve, or in the case of Washington, D.C., by the Commanding General. Unlike U.S. Army Reserve members, National Guard members cannot be mobilized individually, except through voluntary transfers and Temporary Duty Assignments (TDY). The types of activation are as follows: law enforcement; others as determined by governor civil support; law enforcement; counter drug; WMD response; expeditionary missions; civil support and law enforcement[c] Oklahoma City bombing; Kansas tornadoes; California wildfires; various hurricanes post-9/11 airport security; SLC Olympics; Hurricane Katrina Cuba; Iraq; 1992 Los Angeles riots[d] National Guard active duty character The term "activated" simply means that a unit or individual of the reserve components has been placed on orders. The purpose and authority for that activation determine limitations and duration of the activation. The Army and Air National Guard may be activated in a number of ways as prescribed by public law. Broadly, under federal law, there are two titles in the United States Code under which units and troops may be activated: as federal soldiers or airmen under Title 10 ("Armed Forces") and as state soldiers or airmen performing a federally-funded mission under Title 32 ("National Guard"). Outside federal activation, the Army and Air National Guard may be activated under state law. This is known as state active duty (SAD). When National Guard units are not under federal control, the governor is the commander-in-chief of the units of his or her respective state or territory (such as Puerto Rico, Guam and the Virgin Islands). The President of the United States commands the District of Columbia National Guard, though this command is routinely delegated to the Commanding General of the DC National Guard. States are free to employ their National Guard forces under state control for state purposes and at state expense as provided in the state's constitution and statutes. In doing so, governors, as commanders-in-chief, can directly access and utilize the Guard's federally assigned aircraft, vehicles and other equipment so long as the federal government is reimbursed for the use of fungible equipment and supplies such as fuel, food stocks, etc. This is the authority under which governors activate and deploy National Guard forces in response to natural disasters. It is also the authority under which governors deploy National Guard forces in response to human-made emergencies such as riots and civil unrest, or terrorist attacks. Title 10 service means full-time duty in the active military service of the United States. The term used is federalized. Federalized National Guard forces have been ordered by the President to active duty either in their reserve component status or by calling them into Federal service in their militia status. There are several forms: In the categories listed above, Army and Air National Guard units or individuals may also be mobilized for non-combat purposes such as the State Partnership Program, humanitarian missions, counter-drug operations, and peacekeeping or peace enforcement missions. An example of a National Guard being federalized was the Stand in the Schoolhouse Door in 1963 where the Alabama National Guard was federalized in order to allow black students to enroll at the University of Alabama. History On December 13, 1636, the General Court of the Massachusetts Bay Colony ordered that the Colony's scattered militia companies be organized into North, South and East Regiments—with the goal of increasing accountability to the colonial government and responsiveness during conflicts with indigenous Pequot Indians. Under this act, white males between the ages of 16 and 60 were obligated to possess arms and to take part in the defense of their communities by serving in nightly guard details and participating in weekly drills. The modern-day 101st Field Artillery Regiment, 182nd Infantry Regiment, 101st Engineer Battalion and 181st Infantry Regiment of the Massachusetts Army National Guard are directly descended from the original colonial regiments formed in 1636. The Massachusetts militia began the American Revolutionary War at the Battles of Lexington and Concord, The Massachusetts militia units were mobilized either during or shortly after the above battles and used to form, along with units from Rhode Island, Connecticut and New Hampshire, the Army of Observation during the Siege of Boston. On July 3, 1775, General George Washington, under the authority of the Continental Congress, assumed command of the Army of Observation and the new organization became the Continental Army from which the United States Army traces its origins. Throughout the war, militia units were mobilized when British forces entered their geographic areas and participated in most of the battles fought during the war. The early United States distrusted a standing army - in emulation of a long-standing British distrust - and kept the number of professional soldiers small. During the Northwest Indian War, the majority of soldiers were provided by state militias. There are nineteen Army National Guard units with campaign credit for the War of 1812. The Marquis de Lafayette visited the U.S. in 1824–25. The 2nd Battalion, 11th New York Artillery, was one of many militia commands who turned out in welcome. This unit decided to adopt the title "National Guard," in honor of Lafayette's French National Guard. The Battalion, later the 7th Regiment, was prominent in the line of march on the occasion of Lafayette's final passage through New York en route home to France. Taking note of the troops named for his old command, Lafayette alighted from his carriage, walked down the line, clasping each officer by the hand as he passed. Militia units provided 70% of the soldiers that fought in the Mexican–American War, and also provided the majority of soldiers in the early months of the American Civil War The majority of soldiers in the Spanish–American War were from the National Guard. Labor unrest in the industrial and mining sections of the Northeast and Midwest led to demands for a stronger military force within the states. On July 14, 1877, workers on the Baltimore and Ohio Railroad (B&O) began to stop trains in Martinsburg, West Virginia in response to wage cuts. This protest developed into the national Great Railroad Strike of 1877. West Virginia governor Henry M. Mathews was the first state commander-in-chief to send in troops to break-up the protests, and this action has been viewed in retrospect as an incident that would transform the National Guard. After the Great Railroad Strike of 1877, calls for military suppression of labor strikes grew louder, and National Guard units proliferated. In many states, large and elaborate armories, often built to resemble medieval castles, were constructed to house militia units. Businessmen and business associations donated monies for the construction of armories and to supplement funds of the local National Guard units. National Guard officers also came from the middle and upper classes. National Guard troops were deployed to suppress strikers in some of the bloodiest and most significant conflicts of the late 19th and early 20th centuries, including the Homestead Strike, the Pullman Strike of 1894, and the Colorado Labor Wars. Throughout the 19th century the Regular U.S. Army was small, and the state militias provided the majority of the troops during the Mexican–American War, the American Civil War, and the Spanish–American War. With the Militia Act of 1903, the militia was more organized and the name "National Guard" recommended. In 1908, the prohibition on National Guard units serving overseas was dropped. This resulted in constitutional debates within the U.S. government surrounding the legality of the use of the National Guard overseas, culminating in 1912 when U.S. Attorney General George W. Wickersham declared the 1908 amendment to be unconstitutional. The National Defense Act of 1916 contained a provision whereby the president could discharge National Guard members from the militia and draft them into the Army in the event of a war, allowing for their use overseas. This resulted in former National Guard members being discharged from the Army entirely (also losing their status as state troops) when they left service, so the 1920 amendments to the act defined the National Guard's dual role as a state and federal reserve force; the "National Guard while in the service of the United States" as a component of the Army of the United States could be ordered to active duty by the president, be deployed overseas if they so wished, and the Guardsmen would then revert to their status as state troops. The dual state and federal status proved confusing, so in 1933, the National Defense Act of 1916 was amended again. It finally severed the National Guard's traditional connection with the militia clause of the Constitution, providing for a new component called the "National Guard of the United States" that was to be a reserve component of the Army of the United States at all times. This is the beginning of the present legal basis of the National Guard. In World War I, National Guard soldiers made up 40 percent of the men in U.S. combat divisions in France. In World War II, the National Guard made up 18 divisions. One hundred forty thousand Guardsmen were mobilized during the Korean War and over 63,000 for Operation Desert Storm. They have also participated in U.S. peacekeeping operations in Somalia, Haiti, Saudi Arabia, Kuwait, Bosnia, and Kosovo and for natural disasters, strikes, riots and security for the Olympic Games when they have been in the States. Following World War II, the National Guard aviation units that had previously been part of the U.S. Army Air Corps and its successor organization, the U.S. Army Air Forces, became the Air National Guard (ANG), one of two reserve components of the newly established United States Air Force. Within hours of the devastating San Francisco earthquake and fire of April 1906, the California National Guard maintained order, protected lives and property and distributed relief supplies. Its role was controversial and it was withdrawn after 40 days. Federal troops also were used. On September 24, 1957, President Dwight D. Eisenhower federalized the entire Arkansas National Guard to ensure the safe entry of the Little Rock Nine to Little Rock Central High School the following day. Governor Orval Faubus had previously used members of the guard to deny the students entry to the school. The New York National Guard were ordered by Governor Nelson A. Rockefeller to respond to the Rochester 1964 race riot in July of that year. The California Army National Guard were mobilized by the Governor of California Edmund Gerald Brown Sr. during the Watts Riots, in August 1965, to provide security and help restore order. Elements of the Ohio Army National Guard were ordered to Kent State University by Ohio's governor Jim Rhodes to quell anti-Vietnam War protests, culminating in their shooting into a crowd of students on May 4, 1970, killing four and injuring nine. The massacre was followed by the Student strike of 1970. During the Vietnam War, service in the National Guard was highly sought after, as an enlistment in the Guard generally prevented a person from being sent to combat; only a handful of Guard units were ever deployed to Vietnam. In 1968, the National Guard had only 1.26% black soldiers. During the Vietnam War, Secretary of Defense Robert McNamara created the Selective Reserve Force (SRF) in October 1965. Since funding was not available to train and equip the entire National Guard adequately, the SRF would be a core group of 150,000 National Guardsmen available and ready for immediate overseas deployment if needed. SRF units were supposed to be authorized at 100% strength, receive priority training funds and modern equipment, and have more training and do 58 hours of drills of four hours each a year rather than the standard 48 hours of drills. The 2nd Battalion 138th Field Artillery of the Kentucky Army National Guard was ordered to service in Vietnam in late 1968. The unit served in support of the regular 101st Airborne Division. The Battalion's C Battery lost nine men killed and thirty-two wounded when North Vietnamese troops overran Fire Base Tomahawk on June 19, 1969. During the early 1980s, the governors of California and Maine refused to allow deployment of their states' National Guard units to Central America. In 1986, Congress passed the Montgomery Amendment, which prohibited state governors from withholding their consent. In 1990, the Supreme Court ruled against the governor of Minnesota, who had sued over the deployment of the state's National Guard units to Central America. During the 1992 Los Angeles Riots, when portions of south central Los Angeles erupted in chaos, overwhelming the Los Angeles Police Department's ability to contain the violence, the California Army National Guard and selected units of the California Air National Guard were mobilized to help restore order. The National Guard were attributed with five shootings of people suspected of violating the curfew order placed on the city. During the 1993 Waco siege of the Branch Davidians, elements of the Alabama and Texas Army National Guard were called in to assist the ATF and the follow on effort by the Federal Bureau of Investigation; the National Guard's involvement was limited to several specific areas; surveillance and reconnaissance, transport, maintenance and repairs, training and instruction, helicopters, unarmed tactical ground vehicles. The Army National Guard helicopters were also used to do photographic reconnaissance work. Training for ATF agents included such subjects as Close Quarters Combat, and combat medical instruction, and a mock up of the Mount Carmel complex was constructed at Fort Hood, Texas for rehearsals. ATF also received several surplus helmets, flack vests, canteens, first aid dressings, empty magazines, and some night-vision equipment, in addition to MREs and diesel fuel. The FBI would request and receive the use of Bradley Armored Fighting Vehicles, and tank retrieval vehicles, as well as overflights by UH-1 and CH-47 helicopters. As a result of the Bottom Up Review and post-Cold War force cutbacks, the Army National Guard maneuver force was reduced to eight divisions (from ten; the 26th Infantry and 50th Armored were consolidated in the northeastern states) and fifteen 'enhanced brigades,' which were supposed to be ready for combat operations, augmenting the active force, within 90 days.[note 1] National Guard units played a major role in providing security and assisting recovery efforts in the aftermath of the September 11 attacks in 2001 and Hurricane Katrina in 2005. In 2005, National Guard members and reservists were said to constitute a larger percentage of frontline fighting forces than in any war in U.S. history (about 43 percent in Iraq and 55 percent in Afghanistan). There were more than 183,366 National Guard members and reservists on active duty nationwide who left behind about 300,000 dependents, according to U.S. Defense Department statistics. In 2011, Army Chief of Staff Gen. George W. Casey Jr. stated that "Every Guard brigade has deployed to Iraq or Afghanistan, and over 300,000 Guardsmen have deployed in this war." In January and February 2007, National Guard troops from 8 states were activated to go help shovel snow, drop hay for starving cattle, deliver food and necessities to stranded people in their houses, and help control traffic and rescue stranded motorists in blizzards dropping feet of snow across the country. In the first quarter of 2007, United States Secretary of Defense Robert M. Gates announced changes to the Guard deployment policy aimed at shorter and more predictable deployments for National Guard troops. "Gates said his goal is for Guard members to serve a one-year deployment no more than every five years... Gates is imposing a one-year limit to the length of deployment for National Guard Soldiers, effective immediately." Prior to this time, Guard troops deployed for a standard one-year deployment to Iraq or Afghanistan would serve for 18 or more months including training and transit time. During the transition to the new policy for all troops in the pipeline, deployed or soon to be deployed, some will face deployments faster than every five years. "The one-to-five year cycle does not include activations for state emergencies." Prior to the attacks against the United States on September 11, 2001, the National Guard's general policy regarding mobilization was that Guardsmen would be required to serve no more than one year cumulative on active duty (with no more than six months overseas) for each five years of regular drill. Due to strains placed on active duty units following the attacks, the possible mobilization time was increased to 18 months (with no more than one year overseas). Additional strains placed on military units as a result of the invasion of Iraq further increased the amount of time a Guardsman could be mobilized to 24 months. Current Department of Defense policy is that no Guardsman is involuntarily activated for more than 24 months (cumulative) in one six-year enlistment period.[citation needed] Traditionally, most National Guard personnel serve "One weekend a month, two weeks a year", although personnel in highly operational or high demand units serve far more frequently. Typical examples are pilots, navigators and aircrewmen in active flying assignments, primarily in the Air National Guard, and to a lesser extent in the Army National Guard, and special operations airmen and soldiers in both. A significant number also serve in a full-time capacity in roles such as Active Guard and Reserve (AGR) or Air Reserve Technician or Army Reserve Technician (ART). The "One weekend a month, two weeks a year" slogan has lost most of its relevance since the Iraq War, when nearly 28% of total U.S. forces in Iraq and Afghanistan at the end of 2007 consisted of mobilized personnel of the National Guard and other Reserve components. In July 2012, the Army's top general stated his intention to increase the annual drill requirement from two weeks per year to up to seven weeks per year. Prior to 2008, the functions of Agricultural Development Teams were within Provincial Reconstruction Teams of the U.S. government. Today, ADTs consist of soldiers and airmen from the Army National Guard and the Air National Guard. Today, ADTs bring "an effective platform for enhanced dialogue, building confidence, sharing interests, and increasing cooperation amongst the disparate peoples and tribes of Afghanistan." These teams are not only affiliated with the military, they frequently work across agencies, for example with USAID and the Department of State. ADTs provide education and expertise on the ground, while also providing security and order that is traditionally affiliated with the military. These teams have been essential to the counterinsurgency efforts in Afghanistan as a public diplomacy tool to build relations with the local people in the tribes and provinces of the country. ADTs provide classroom instruction and teachings to Afghans about how to improve their farming practices during non-seasonal growing months, which allows the farmers to use skills in the winter to prepare for farming in the summer and fall. This enhances agricultural production and the Afghan economy as a whole. Agricultural education also improves lines of communication and builds trust between the people, the U.S. government, and the Host Nation. Additionally, through word of mouth in the provinces ideas are spread that inform others about these farming techniques, that may not have had direct interaction with the ADTs. The National Guard ADTs also introduce their U.S. civilian colleagues to the Afghan University personnel, which further strengthens relations and trust in the U.S. efforts in Afghanistan. ADTs also enhance public diplomacy in Afghanistan by providing security to the local provinces they are working within. This tool has provided the teams with the civilian-military partnership that is needed to conduct public diplomacy and defeat the insurgents in Afghanistan. President Barack Obama said that the U.S. will enhance agricultural development instead of big reconstruction projects to build Afghanistan's economy, to have an immediate impact on the Afghan people. Today, these projects include "...basic gardening practices, to large watershed and irrigation projects. There are also projects that teach bee keeping and livestock production: all of which will have a positive impact on unemployment, hunger, and the ability to sustain future generations. More and more Afghan tribal leaders have been requesting additional ADTs, which illustrates how important the use of public diplomacy has been in the efforts to win the trust of the Afghan people. The case study from Nangarhar Province in Afghanistan serves as an excellent example. This province is one of the most stable and secure provinces in Afghanistan. For example, over 100,000 Afghans have returned to province; the province has also been declared poppy-free in 2007 by the UN. Additionally, most districts within the province have all-weather paved roads and it is also one of the most productive agricultural regions in Afghanistan. In 2006, Congress considered giving the president the full authority to mobilize National Guard units within the U.S. without the consent of state governors. However, this was met with resistance from states governors and members of the National Guard. The act was eventually passed, but instead, the president's authority was expanded to mobilize the reserve components for domestic operations without the consent of the governor, only during a natural disaster, terrorist attack, epidemic or other public health emergency. The following year, that authority was repealed. In 2020, the National Guard was activated for 11,000,000 "man days" in support of natural disasters, civil unrest, food distribution at food banks, and COVID-19 testing and vaccination. This was the highest number of activation days since World War II. In 2025, 2,000 soldiers of the California National Guard were federalized by President Donald Trump by a presidential memorandum to respond to incidents of violence and civil disorder against Immigration and Customs Enforcement (ICE) and other United States Government personnel who were performing Federal functions in Los Angeles for 60 days. On August 11, Trump announced the deployment of National Guards to Washington D.C. An additional deployment of National Guard troops to Memphis, Tennessee was announced on September 15. Proposals for a Domestic Civil Disturbance Quick Reaction Force consisting of two units of 300 soldiers of the National Guard were reported by The Washington Post in August 2025. The force would be used to suppress civil unrest at short notice. Relevant laws Although the U.S. Constitution does not explicitly mention the "National Guard", it uses the term "Militia" to describe a state-based military force. These clauses serve as the constitutional basis for the modern National Guard. The Constitution outlines the federal and state governments' authority over militias in several clauses, including granting Congress the power to call forth, organize, arm, and discipline the Militia. It also designates the President as the Commander in Chief of the state Militias, when they are called into service for the United States. The National Guard was formally established by Congress through later legislation, as described in the following section. The United States Congress has enacted various laws that control the National Guard: Defend the Guard is state-level legislative initiative which would require Congress to make an official declaration of war before National Guard troops can be transferred from state control to federal active duty combat. Supporters of the bill claim that this law would pressure Congress to conform to the Constitution and declare war when American soldiers are sent overseas to perform military actions. In 2024, over 80% of Texas GOP voters voted in favor of a Defend the Guard non-binding ballot measure which stated, “The Texas Legislature should prohibit the deployment of the Texas National Guard to a foreign conflict unless Congress first formally declares war.” In 2024, the New Hampshire GOP added a Defend the Guard plank to the Federalism section of its platform which states, "(We) Demand that Congress exercise their sole authority over war declarations and protect the New Hampshire National Guard by requiring a Congressional declaration of war prior to any National Guardsman deployment to overseas combat zones." Notable members Militia service was a common trait among presidents of the United States, 18 of whom have served in colonial or state militias and two have served in the National Guard since it was established in 1903. Among these, three served in colonial militias (George Washington, Thomas Jefferson and James Madison), 15 served in state militias (James Monroe, Andrew Jackson, William Henry Harrison, Millard Fillmore, Franklin Pierce, James Buchanan, Abraham Lincoln, Andrew Johnson, Ulysses S. Grant, Rutherford B. Hayes, James Garfield, Chester A. Arthur, William Henry Harrison, William McKinley and Theodore Roosevelt), one in the Army National Guard (Harry S. Truman) and one (George W. Bush) served in the Air National Guard. Number of guardsmen by state, territory and D.C. A member of the National Guard, often called a "guardsman," is a person who has signed an Enlistment Contract and has subscribed to an Enlistment Oath, is still alive, or has not yet been discharged. The subscription to the oath (typically a recitation) and the signature must be witnessed by a person, typically a Guard officer, authorized as an official witness. The term of the enlistment, or membership, runs from the date on the contract through the date on the discharge or the death certificate.[note 2] The "number of guardsmen" is a statistic generated by the Defense Manpower Data Center (DMDC), an agency of the DoD tasked with tracking the identities of all persons in the active military, its reserves, and civilians employed by it. Membership in the Guard may be regarded as an independent variable. It changes constantly. Its value at any instant cannot be known exactly. It can, however, be estimated from the records of the DMDC. Its data and reports are for the most part inaccessible to the general public, but it does make available some reports under the category "DoD Personal, Workforce Reports & Publications." The series "Military and Civilian Personnel by Service/Agency by State/Country (Updated Quarterly)," containing the statistics on membership in the National Guard by state, territory, and D.C., is updated every 3rd month at the end of the month. For example, one was generated on June 30, 2017. Like all statistics, these numbers of guardsmen are a sample culled according to a certain method. The report states that it uses the sources: "Active Duty Master File, RCCPDS, APF Civilian Master, CTS Deployment File, Civilian Deployment." The probabilities of the statistics being accurate to various percentages are not stated. Below is a sample summary of a profile of National Guard membership as of September 30, 2020. Only the non-total columns come from the source. The totals are calculated from the data. See also Notes References Further reading External links
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