单片机控制继电器，为程序开发者提供了一个很好的参考，为做工程提供了简便的通用的程序。-Single-chip microcomputer to control relays, for the development provides a good reference, in order to provide a simple project to do a common procedure.

上传程序为基于51单片机的实例操作程序，含有继电器控制，液晶显示，传感器控制以及串行口通信的程序代码-Upload program is based on 51 single instance of operating procedures, containing relay control, LCD display, sensor control and serial port communication program code