英文：The amount of space, desktop or floor, needed by a computer system or peripheral. Systems and peripherals with smaller footprints have the advantage of leaving more room available for other things.
英文：The central processing unit of a computer exclusive of peripheral and remote devices.
中文：主机计算机除了外部和分离的装置以外的中心运作部件
英文：An interface unit or circuitry that converts data to and from the representation used by a particular peripheral device or class of peripheral devices; for example, a device that converts between bit serial and bit parallel and resolves differences in tra
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