同学的毕业设计：温湿度控制系统，温湿度的上下限可以通过按键设置，继电器为后继控制，温度传感器为DS18B20，温度传感器为DH11，单片机为STC90C52RBT6-Students graduating from the design: temperature and humidity control system, temperature and humidity can be key to set upper and lower limits, the relay for the subsequent control, temperature sensor DS18B20, temperature sensor DH11, microcontroller STC90C52RBT6