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A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations. Learn about the etymology, history, types and functions of computers, from ancient devices to modern digital electronic computers.
Alan Turing was an English mathematician, computer scientist, logician, cryptanalyst, philosopher and theoretical biologist. He is widely considered to be the father of theoretical computer science for his work on the Turing machine, algorithm and computation.
Learn about the history, definitions, elements, and classifications of programming languages, a system of notation for writing computer programs. Explore the differences between computer languages and programming languages, and the various types and features of programming languages.
IBM is an American multinational technology company that produces and sells computer hardware, software, and services. It is known for its innovations in punch-card machines, mainframes, PCs, supercomputers, artificial intelligence, and quantum computing.
A computer network is a set of computers sharing resources located on or provided by network nodes. Learn about the history, types, features, applications, and metrics of computer networks from this comprehensive encyclopedia article.
A supercomputer is a type of computer with a high level of performance as compared to a general-purpose computer, measured in floating-point operations per second (FLOPS). Learn about the history of supercomputing, from the first machines in the 1960s to the current exascale supercomputers, and their applications in various fields of computational science.
This web page provides a comprehensive list of TCP and UDP port numbers used by various network applications and protocols. It also explains the meaning of well-known, registered, and dynamic ports, and the legend of the table cells.
A comprehensive and chronological table of the 45 men who have served as president of the United States since 1789, with their portraits, names, terms, parties, and vice presidents. Learn about the history, politics, and controversies of the American presidency.