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

    Jul 31, 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 design, constituent parts, and applications as well as about the history of computing.

  2. What is a computer? - Britannica

    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 data, calculating algorithms, and displaying information.

  3. Computer - Technology, Invention, History | Britannica

    Jul 31, 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.

  4. Computer - History, Technology, Innovation | Britannica

    Jul 31, 2025 · Computer - History, Technology, Innovation: A computer might be described with deceptive simplicity as “an apparatus that performs routine calculations automatically.” Such a definition would owe its deceptiveness to a naive and narrow view of calculation as a strictly mathematical process.

  5. computer - Kids | Britannica Kids | Homework Help

    Computer software is divided into two basic types—the operating system and application software. The operating system controls how the different parts of hardware work together. Application software gives the computer instructions for doing specific tasks, such as word processing or playing games.

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

    Jul 23, 2025 · Computer science is the study of computers and computing, including their theoretical and algorithmic foundations, hardware and software, and their uses for processing information.

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

    Jul 27, 2025 · personal computer (PC), a digital computer designed for use by only one person at a time.

  8. computer summary | Britannica

    computer, Programmable machine that can store, retrieve, and process data. 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).

  9. Computer - Home Use, Microprocessors, Software | Britannica

    Jul 31, 2025 · Computer - Home Use, Microprocessors, Software: Before 1970, computers were big machines requiring thousands of separate transistors. They were operated by specialized technicians, who often dressed in white lab coats and were commonly referred to …

  10. Computer - Supercomputing, Processing, Speed | Britannica

    Jul 31, 2025 · The physical elements of a computer, its hardware, are generally divided into the central processing unit (CPU), main memory (or random-access memory, RAM), and peripherals.