add-in card (add-on card, expansion card) A printed circuit board that plugs into an expansion slot in a computer to provide some extra facility. The sockets normally connect to a bus, and the type of connector and the use to which each contact is put are strictly defined to ensure compatibility between the card and the computer. Cards are available that provide extra memory, communications interfaces, sound I/O capabilities, device interfaces to extra disks or tape backup devices, for instance, or perhaps extra processors in multiprocessor systems. See also PCMCIA.
More From encyclopedia.com
Mobile Computing , As the Internet becomes increasingly popular, a new paradigm is being developed in networked computing known as nomadic computing or mobile computing… Hardware , The concept of inventing hardware to assist in commercial productivity is not a modern concept. For example, thousands of years ago the Chinese sough… Usb , USB Abbrev. for universal serial bus. An external peripheral interface standard for communication between a computer and external peripherals over lo… interface , in·ter·face / ˈintərˌfās/ • n. 1. a point where two systems, subjects, organizations, etc., meet and interact: the interface between accountancy and… Analog Computer , Computer, Analog A digital computer performs calculations based solely upon numbers or symbols. An analog computer, on the other hand, translates con… Digital Computer , A digital computer is a programmable device that processes information by manipulating symbols according to logical rules. Digital computers come in…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like