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针对微型机，提出了一种在智能单元控制下，采用“双端口”技术与内存直接映象技术相结合，实现高速同步多通道数据输入／输出的方法；介绍一种在ＩＢＭＰＣ总线上开发的微机输入／输出接口电路。
Aiming at the microcomputer, this paper presents a method to realize high-speed synchronous multi-channel data input / output by combining “dual port” technology with direct memory mapping technology under the control of smart unit. Computer input / output interface circuit.