说明：  实现在单片机的1602液晶屏上显示实时的温度和湿度，精度范围在0.1个百分点，采用dht11作为测量传感器
(Realization is displayed on the LCD screen in real time microcontroller 1602 temperature and humidity, the accuracy range of 0.1 percentage points, as the measuring sensor using dht11)