通过温度传感器检测外界的温度，然后经放大接入A/D，和键盘设置的温度值进行比较，来调节控制器对加热器进行控制，使温度保持在设定温度附近，并通过LED显示温度值，如果出现温度异常，通过嗡鸣器进行报警。以实现温度设置输入、温度显示、温度异常报警、加热执行器控制等功能-Through the temperature sensor detecting the temperature of the outside world, and then by the enlarged access A/D, and keyboard settings to compare the temperature to adjust the controller to the heater control to maintain the temperature near the set temperature, and temperature LED display value, if there is abnormal temperature, through the alarm device Ong Ming. Input to achieve the set temperature, the temperature showed that temperature anomalies alarm, heating and other functions to implement control