介绍一种以STC89C52单片机为核心,采用数字温度传感器DS18B20作为温度数字检测元件,使用LCD1602液晶模块显示,通过按键能调节温度值和设置报警点的数字温度表设计。介绍了DS18B20的原理,重点描述了各功能模块的软件设计。该设计结构简单、功能齐全、利于扩展,实现了对DS18B20的开发及应用。 Introduce a STC89C52 microcontroller as the core, the use of digital temperature sensor DS18B20 as temperature digital detection components, the use of LCD1602 LCD module display, through the keys to adjust the temperature and set the alarm point digital thermometer design. The principle of DS18B20 is introduced, and the software design of each function module is described emphatically. The design structure is simple, full-featured, conducive to expansion, to achieve the DS18B20 development and application.