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本文介绍了一种PC总线同MCS-51单片机之间的双向接口,对其工作原理及电路实现进行了讨论。该接口可用于PC总线工控机智能I/O模板的设计,具有编程简单,效率较高的优点。
This paper presents a two-way interface between a PC bus and the MCS-51 single-chip microcomputer, and discusses its working principle and circuit implementation. This interface can be used in the design of intelligent bus I / O module of PC bus industrial computer. It has the advantages of simple programming and high efficiency.