89C51单片机，通过键盘输入预设值，与DS18B20测得的实际值做比较，然后驱动制冷或加热电路。用keil C语言来实现PID的控制。 ,89C51 microcontroller, through keyboard input default, and DS18B20 measured to compare the actual value, and then drive circuit refrigeration or heating. Keil C language used to a

温度度传感器SHT10加1602显示温湿度，控制继电器等外设来控制加热，制冷，加湿，除湿等等。-Temperature sensor SHT10 plus 1602 show temperature and humidity control relays and other peripherals to control heating, cooling, humidification, dehumidification and so on.