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Computer | Definition, History, Operating Systems, Facts | Britannica 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
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 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
Computer - History, Technology, Innovation | Britannica 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
Alan Turing | Biography, Facts, Computer, Machine, Education, Death . . . Alan Turing was a British mathematician and logician, a major contributor to mathematics, cryptanalysis, computer science, and artificial intelligence He invented the universal Turing machine, an abstract computing machine that encapsulates the fundamental logical principles of the digital computer
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
Mainframe | Definition Facts | Britannica Mainframe, digital computer designed for high-speed data processing with heavy use of input output units such as large-capacity disks and printers Mainframes have been used for such applications as payroll computations, accounting, business transactions, information retrieval, airline seat
History, Computer, Stands For, Machine, Facts - Britannica ENIAC, the first programmable general-purpose electronic digital computer, built during World War II by the United States and completed in 1946 The project was led by John Mauchly, J Presper Eckert, Jr , and their colleagues ENIAC was the most powerful calculating device built to that time
Ada Lovelace | Biography, Computer, Facts | Britannica Ada Lovelace (born December 10, 1815, Piccadilly Terrace, Middlesex [now in London], England—died November 27, 1852, Marylebone, London) was an English mathematician, an associate of Charles Babbage, for whose prototype of a digital computer she created a program
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