说明：  空调恒温控制 利用实验仪上显示电路，键盘电路，A/D变换电路，完成类似空调恒温控制实验，可以利用实验仪上的电位器模仿温度变化，加热和致冷电机可以用发光管代替。要求可以用键盘设定恒温温度，当外界温度超过设定温度+/-2℃时，就要启动加热或致冷电机。
(Air-conditioning thermostat to control the use of experimental apparatus to show circuit, the keyboard circuit, A/D conversion circuit, the completion of a similar air-conditioning thermostat control experiment, we can use experiment to imitate the potentiometer temperature changes, heating and refrigeration motors can be used in place of LED. Requirements of the keyboard can be set thermostat temperature, when the outside temperature exceeds the set temperature+/-2 ℃, to start the heating or cooling motor.)