本文件是利用51单片机的串行口进行多个单片机进行的通信系统，程序可靠，还有仿真呢！-This document is the use of 51 single-chip microcomputer serial port for multiple communication system, single-chip program is reliable, and the simulation!!

这是一个串口电话拨号源程序通信源程序,请大家下载！可以的(This is a serial port telephone dial-up communication source program source code, please download!)

基于STM32的LM75A温度驱动程序，I2C通信，串口打印，已经验证过，供大家参考！