总线
总线（Bus）是指计算机组件间规范化个交换数据（data）个方式，即以一种通用个方式为各组件提供数据传送搭控制逻辑。
线路拉同一时间内侪仅能负责传输一个比特。因此，必须同时采用多条线路才能发送更多数据，而总线可同时传输个数据数就叫作宽度（width），以比特为单位，总线宽度愈大，传输性能就愈佳。
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