
Computer | Definition, History, Operating Systems, & Facts | Britannica
Mar 20, 2026 · 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 …
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 …
Computer - Technology, Invention, History | Britannica
Mar 20, 2026 · 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. First, the potential …
Computer - History, Technology, Innovation | Britannica
Mar 20, 2026 · Computer - History, Technology, Innovation: How did the abacus lead to modern computers? The earliest known calculating device is the abacus, dating back to at least 1100 BCE …
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 …
Personal computer (PC) | Definition, History, & Facts | Britannica
5 days ago · Personal computer, a digital computer designed for use by only one person at a time. A typical personal computer assemblage consists of a central processing unit, which contains the …
Computer science | Definition, Types, & Facts | Britannica
3 days ago · Computer science is the study of computers and computing, including their theoretical and algorithmic foundations, hardware and software, and their uses for processing information. The …
Computer - Home Use, Microprocessors, Software | Britannica
Mar 20, 2026 · Computer - Home Use, Microprocessors, Software: Before 1970, computers were big machines requiring thousands of separate transistors. They were operated by specialized …
Computer - Networking, Digitalization, Automation | Britannica
Feb 6, 2026 · Computer - Networking, Digitalization, Automation: The Internet grew out of funding by the U.S. Advanced Research Projects Agency (ARPA), later renamed the Defense Advanced Research …
Computer - Output Devices | Britannica
Mar 20, 2026 · Computer - Output Devices: Printers are a common example of output devices. New multifunction peripherals that integrate printing, scanning, and copying into a single device are also …
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