DHT11是集温度湿度检测于一体的数字化传感器。它应用专用的数字模块采集技术和温湿度传感技术，确保产品具有极高的可靠性与卓越的长期稳定性。传感器包括一个电阻式感湿元件和一个NTC测温元件，并与一个高性能8位单片机相连接。因此该产品具有品质卓越、超快响应、抗干扰能力强、性价比极高等优点。每个DHT11传感器都在极为精确的湿度校验室中进行校准。校准系数以程序的形式储存在OTP内存中，传感器内部在检测信号的处理过程中要调用这些校准系数。单线制串行接口，使系统集成变得简易快捷。超小的体积、极低的功耗，信号传输距离可达20米以上，使其成为各类应用甚至最为苛刻的应用场合的最佳选则。产品为 4 针单排引脚封装。连接方便，特殊封装形式可根据用户需求而提供。

为方便在单片机实验系统V2上开发温湿度程序，现根据DHT11的范例程序，结合STC12C系列单片机的特点，编写了DHT11的有关接口函数（C51语言）。请大家下载并使用在自己的系统中。

-ture measuring element, and with a high-performance 8-bit microcontroller connections. So the product has excellent quality, super fast response, strong anti-jamming capability, and cost-effective extremely high yield. Each DHT11 sensors are extremely accurate calibration checkout room in the humidity. Calibration coefficient to program OTP memory stored in internal signal detection, the sensor in the process, to call these calibration coefficient. Singleline system serial interface, make system integration become simple and quick. Super small volume, low power consumption, signal transmission distance is 20 meters above, make it become the most demanding of application and even the best selected applications. The product is 4 needles single pin encapsulation. Connecting convenience, special packaging forms can be provided according to user requirements.

For the convenience of in the SCM experiment system developed on V2, currently DHT11 humidity procedures according to the example pr