该代码为一个温度控制系统的完整程序，通过1602液晶实时显示当前温度值，并可以实时修改设定温度值，通过PID控制保持温度的稳定，和上位机程序配合可以绘出温度曲线-The code for a temperature control system, the integrity of procedures, real-time through the 1602 LCD displays the current temperature value, and modify settings in real time temperature value, through the PID control to maintain a stable temperature, and the host computer program with the temperature curve can be plotted