In the paper,the multi computer communication principle and communication protocol of PC and single chip in the series of MCS 51 are introduced. The communication circuit of PC and multi single chip micro computer is designed.

• 介绍了 PC机与 MCS- 5 1系列中 80 5 1单片机多机通信原理及通信协议 ,设计了 PC机与多台单片机的通信电路。