DHT11温湿度传感器与51单片机之间的通信。根据传感器的通信协议，首先由单片机通过I/O口主动产生要求的激发信号，然后将数据线的控制权交给传感器，接着单片机通过while语句不间断的检查I/O口的高低电平，从而达到对时序的正确把握，解析出准确的传输数据-DHT11 temperature and humidity sensors and communication between the microcontroller 51. According to the communication protocol of the sensor, first by the microcontroller through the I/O port excitation signal generating initiative required, and then passes control to the sensor data line, followed by the while statement microcontroller continuously checks I/O port of the high and low, to achieve the correct understanding of the timing of, parse out the accurate transmission of data