Design of Digital Thermometer Based on AT89C51
Abstract: A digital thermometer collection is designed, which uses SCM AT89C51 as a controller, digital temperature sensor DS18B20 as temperature collector. The structure, pin and function of the AT89C51, the performance of the structure, working principle and control methods of DS1B20, and the interface, data transmission between SCM AT89C51 and digital temperature sensor DS18B20 is introduced. This digital thermometer can detect the temperature from﹣55℃to125℃ .It is suitable for daily life, industrial production and scientific research in areas such as the temperature measurement needs.
Key words: temperature measurement; DS18B20; AT89C51