PC机与51单片机串口通讯程序，主要实现单片机发送和接收程序，PC端可以用VB,VC进行界面设计。-PC-MCU serial communication program with the 51, mainly to send and receive procedures for SCM, PC client can use VB, VC for interface design.

采用串口通讯，实现PC机与下位51单片机通信-PC exchange date with MCU through serial port.