说明：  可以对温度进行自由设定，到那时必须在0－100摄氏度单位内，设定时可以适时的显示说设定的温度值，温度是可以自由设置的，传感器的检测值与设定的温度比较，可以显示在七段发光二极管上
(The temperature can be set freely, then the unit must be 0-100 degrees Celsius, setting a timely display of said set temperature, the temperature can be freely set, the sensor detection value compared with the set temperature , can be displayed on the seven-segment LED)