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  1. Computer | Definition, History, Operating Systems, & Facts

    Oct 17, 2025 · A computer is a programmable device for processing, storing, and displaying information. Learn more in this article about modern digital electronic computers and their …

  2. What is a computer? | Britannica

    Oct 20, 2025 · A computer is a machine that can store and process information. Most computers rely on a binary system, which uses two variables, 0 and 1, to complete tasks such as storing …

  3. computer summary | Britannica

    A computer consists of the central processing unit (CPU), main memory (or random-access memory, RAM), and peripherals (e.g., a keyboard, a printer, disc drives).

  4. Computer - Technology, Invention, History | Britannica

    Oct 17, 2025 · Computer - Technology, Invention, History: By the second decade of the 19th century, a number of ideas necessary for the invention of the computer were in the air.

  5. Computer science | Definition, Types, & Facts | Britannica

    Oct 17, 2025 · Computer science is the study of computers and computing, including their theoretical and algorithmic foundations, hardware and software, and their uses for processing …

  6. Personal computer (PC) | Definition, History, & Facts | Britannica

    Nov 1, 2025 · personal computer (PC), a digital computer designed for use by only one person at a time.

  7. Tablet computer | Definition & Facts | Britannica

    Sep 20, 2025 · In 1968 Alan Kay, a graduate student at the University of Utah, promoted his vision of a small, powerful tablet-style computer that he later called the Dynabook; however, …

  8. John Mauchly | Biography, Computer, & Facts | Britannica

    Aug 26, 2025 · John Mauchly (born August 30, 1907, Cincinnati, Ohio, U.S.—died January 8, 1980, Ambler, Pennsylvania) was an American physicist and engineer, co-inventor in 1946, …

  9. Boston Massacre | History, Facts, Site, Deaths, & Trial | Britannica

    4 days ago · Boston Massacre, the famous skirmish between British troops and a crowd in Boston, Massachusetts, on March 5, 1770. Widely publicized, the violent event contributed to …

  10. Automatic Computing Engine | computer science | Britannica

    His design for the Automatic Computing Engine (ACE) was the first complete specification of an electronic stored-program all-purpose digital computer. Had Turing’s ACE been built as he …