PC机与多单片机组成串行通信的新尝试

A New Attempt About the Serial Communication System Between PC and Single-chip Microprocessors

以实际应用的小型集散变频调速系统为例 ,介绍一种PC机与多AT89C2 0 51单片机之间串行通信的接口电路 ,并提出一种新的通信方法 ,即采用QBASIC语言提供通信语句来编写多机通信程序。该方法硬件紧凑 ,软件编程简单可靠。

Given an example about the practical application of a pint size distributed frequency coversion adjustable speed system,this paper tells us a new interface circuit of the communication between PC and multi AT89C2051 single chip microprocessors. A new methed is provided by using QBASIC language,in the multi computer communication′s program. By this method,hardware is intensive and software is simple and reliable.