基于51单片机的温度检测设计，DS18B20温度传感器，8位数码管显示-Design of temperature measurement based on 51 single chip microcomputer

四路红外探测传感器模块是用来检测黑线或障碍物的一种传感器，精度高，易使用。(Four way infrared detection sensor module is used to detect black lines or obstacles of a sensor, high accuracy, easy to use.)