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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 - Technology, Invention, History | Britannica

    Oct 17, 2025 · By the second decade of the 19th century, a number of ideas necessary for the invention of the computer were in the air. First, the potential benefits to science and industry of …

  4. 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).

  5. Computer - History, Technology, Innovation | Britannica

    Oct 17, 2025 · The history of the solving of these problems is the history of the computer. That history is covered in this section, and links are provided to entries on many of the individuals …

  6. Computer security | Definition & Facts | Britannica

    Oct 15, 2025 · Computer security, the protection of computer systems and information from harm, theft, and unauthorized use. Computer hardware is typically protected by serial numbers, …

  7. 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, …

  8. What can computers do? | Britannica

    Oct 20, 2025 · What can computers do? The most powerful computers can perform extremely complex tasks, such as simulating nuclear weapon experiments and predictin

  9. 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, …

  10. Computer worm | Malware, Cybersecurity & Networking | Britannica

    Sep 15, 2025 · On November 2, 1988, a computer science student at Cornell University named Robert Morris released the first worm onto the Internet from the Massachusetts Institute of …