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Operating System -- (1) The main control program of a computer that schedules tasks, manages storage, and handles communication with peripherals. Its main part, called the kernel, is always present. The operating system presents a basic user interface when no applications are open, and all applications must communicate with the operating system. (2) An operating system (sometimes abbreviated as "OS") is the program that, after being initially loaded into the computer by a boot program, manages all the other programs in a computer. The other programs are called applications or application programs.

motherboard -- A motherboard is the physical arrangement in a computer that contains the computer's basic circuitry and components. On the typical motherboard, the circuitry is imprinted or affixed to the surface of a firm planar surface and usually manufactured in a single step.

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Last revised 9/8/02