使用DS18B20温度传感器设计温控系统

功能要求：1.在前三个数码管上显示当前采集到的环境温度

　　　　 2.在环境温度低于27，蜂鸣器慢滴报警，并且P1.O口放光二极管闪烁（模拟开启制热设备）

　　　　 当温度低于25度，快滴，并且P1.0和P1.1口发光二极管一起闪烁（模拟大功率加热）

3.当温度高于30度，蜂鸣器慢滴报警，并且P1.2口放光二极管闪烁（模拟开启制冷设备?

　　　　　　当温度高于32度，快滴，并且P1.2和P1.3口发光二极管一起闪烁（模拟大功率制冷）-Use DS18B20 temperature sensor design temperature control system functional requirements: 1. Previous three digital tube displays the current ambient temperature collected 2 at ambient temperatures below 27, the buzzer alarm slow drip, and P1.O mouth shine LED flashes (analog open heating equipment) when the temperature is below 25 degrees, quick drops, and P1.0 and P1.1 port LEDs flash together (analog power heating) 3 When the temperature is above 30 degrees, the buzzer slow drip alarm, and P1.2 mouth shining LED flashes (analog open refrigeration equipment? when the temperature is above 32 degrees, quick drops, and P1.2 and P1.3 port LEDs flash together (analog power refrigeration)