释义 |
simultaneous input /output tions.Most often this is accomplished using buffers that hold input /output data and information as it arrivesand on a temporary basis, while other operations are executed by the CPU.Thus, the computer need not wait for data to arrive from the very slow I /O units or terminals and may instead take it in massive quantities from the faster part of the buffer.;计算机进行输入输出操作的同时具有处理其它操作的能力。通常是使用缓冲器把输入输出数据和信息暂时保存下来,其它操作则由中央处理机CPU执行,这样,计算机就不必等待从速度很慢的输入输出设备或终端来的数据,而可以从快速的缓冲器得到数据。 |