本文主要介绍了基于AT89C51的测温系统，采用温度传感器DS18B20和LCD1602，可实现对温度的采集与显示，并可任意设定上下限报警温度，自动报警。-This article mainly introduces the temperature measurement system based on AT89C51, adopts temperature sensor DS18B20 and LCD1602, can realize the temperature collection and display, and can arbitrarily set the upper and lower limit alarm temperature, automatic alarm.