LPC1114+热敏电阻+数码管，检测温度，打到设定的报警值时蜂鸣器工作。左右键切换华氏摄氏，上下键改变报警值。(LPC1114+ thermistor + digital tube, check the temperature, hit the set alarm value, buzzer work. Key switch about Fahrenheit Celsius, up and down key to change the alarm value.)