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What is a computer? | Britannica - Encyclopedia 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
Computer science | Definition, Types, Facts | Britannica 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 discipline of computer science includes the study of algorithms and data structures and artificial intelligence
Personal computer (PC) | Definition, History, Facts | Britannica 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’s arithmetic, logic, and control circuitry on an integrated circuit; computer memory; and various peripheral devices
Digital computer | Evolution, Components, Features | Britannica digital computer, any of a class of devices capable of solving problems by processing information in discrete form It operates on data, including magnitudes, letters, and symbols, that are expressed in binary code —i e , using only the two digits 0 and 1
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)
Computer programming language | Types Examples | Britannica Computer programming language, any of various languages for expressing a set of detailed instructions for a computer The earliest programming languages were assembly languages, not far removed from instructions directly executed by hardware
Computer network | Definition Types | Britannica A computer network consists of two or more computers that are connected to each other to communicate data electronically Two basic network types are local area networks (LANs) and wide area networks (WANs)
computer - Kids | Britannica Kids | Homework Help A computer is a device for working with information The information can be numbers, words, pictures, movies, or sounds Computer information is also called data
Computer - Home Use, Microprocessors, Software | Britannica 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 as a computer priesthood
Analog computer | Definition, Examples, Facts | Britannica Analog computer, any of a class of devices in which continuously variable physical quantities are represented in a way analogous to the corresponding quantities in the problem to be solved By the 1970s, analog computers had been replaced by faster, more powerful digital computers