51单片机温度控制程序，可应用于环境温度测试及冰箱和制冷设备的温度监测、控制，可根据代码对端口的定义，接入继电器控制加热设备及制冷设备。(51 single-chip temperature control procedures, temperature monitoring and control can be applied to environmental temperature test and refrigerator and refrigeration equipment, according to the code definition of port access control, relay heating equipment and refrigeration equipment.)