本程序实现了基于51单片机的多机串行通讯：通过主机对从机操作读取获得挂于从机的温度传感器DS18B20温度值显示于主机控制的液晶屏。-This program implements the serial communication based on 51 single-chip multi-machine: by the host to read from the operating temperature sensor DS18B20 temperature hanging slave T