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Computer | Definition, History, Operating Systems, Facts computer, device for processing, storing, and displaying information Computer once meant a person who did computations, but now the term almost universally refers to automated electronic machinery The first section of this article focuses on modern digital electronic computers and their design, constituent parts, and applications
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 In fact, calculation underlies many activities that are not normally thought of as mathematical
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 Computers come in many different shapes and sizes, from handheld smartphones to supercomputers weighing more than
Computer - Technology, Invention, History | Britannica 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 benefits to science and industry of being able to automate routine calculations were appreciated, as they had not been a century earlier Specific methods to make automated calculation more practical, such as
Computer science | Definition, Types, Facts | Britannica computer science, 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, computer and network design, modeling data and information processes, and
Laptop computer | Definition, History, Facts | Britannica laptop computer, portable personal computer that features a screen, touch pad, and alphanumeric keyboard Laptops usually have a clamshell design, in which the screen is located on the interior of the upper lid and the keyboard is located on the interior of the lower lid Laptop screens are protected when users close their lids
Personal computer (PC) | Definition, History, Facts personal computer (PC), a digital computer designed for use by only one person at a time A typical personal computer assemblage consists of a central processing unit (CPU), which contains the computer’s arithmetic, logic, and control circuitry on an integrated circuit; two types of computer memory, main memory, such as digital random-access memory (RAM), and auxiliary memory, such as
computer - Kids | Britannica Kids | Homework Help A computer system requires both hardware and software Hardware is the computer’s physical parts Software is the programs, or instructions, that tell the hardware what to do All computers have the same basic hardware The microprocessor is the computer’s “brain ” It is also called the CPU, or central processing unit
Digital computer | Evolution, Components, Features | Britannica The second computer generation began in the late 1950s, when digital machines using transistors became commercially available Although this type of semiconductor device had been invented in 1948, more than 10 years of developmental work was needed to render it a viable alternative to the vacuum tube The small size of the transistor, its greater reliability, and its relatively low power
Computer graphics | Rendering, Animation Visualization Computer graphics also are essential to scientific visualization, a discipline that uses images and colours to model complex phenomena such as air currents and electric fields, and to computer-aided engineering and design, in which objects are drawn and analyzed in computer programs Even the windows-based graphical user interface, now a common