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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.
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.
Computer security | Definition & Facts | Britannica
Computer hardware is typically protected by serial numbers, doors and locks, and alarms. The protection of information and system access is achieved through other tactics, some of them quite complex.
Computer - Time-sharing, Minicomputers, Multitasking | Britannica
It was built by Fernando Corbato and Robert Jano at MIT, and it connected an IBM 709 computer with three users typing away at IBM Flexowriters. This was only a prototype for a more elaborate time-sharing system that Corbato was working on, called Compatible Time-Sharing System, or CTSS.
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.
Computer memory - Cache, RAM, ROM | Britannica
Memory usage by modern computer operating systems spans these levels with virtual memory, a system that provides programs with large address spaces (addressable memory), which may exceed the actual RAM in the computer.
Computer virus | Definition & Facts | Britannica
A virus is usually designed to execute when it is loaded into a computer’s memory. Upon execution, the virus instructs its host program to copy the viral code into, or “infect,” any number of other programs and files stored in the computer.
Computer architecture | Definition & Facts | Britannica
Computer architecture, structure of a digital computer, encompassing the design and layout of its instruction set and storage registers. The architecture of a computer is chosen with regard to the types of programs that will be run on it (business, scientific, general-purpose, etc.).
Computer - Output Devices | Britannica
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 popular.
Computer - UNIVAC, Computing, Data Storage | Britannica
After leaving the Moore School, Eckert and Mauchly struggled to obtain capital to build their latest design, a computer they called the Universal Automatic Computer, or UNIVAC.
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