以89C51单片机和外围元器件构成的单片机应用系统，并完成相应的软硬件调试，基于AT89C51单片机为数字系统，而数字温度传感器DS18B20为单总线数字温度传感器，因此采用DS18B20来实现对温度信号的采集和转换。-SCM application system by 89C51 MCU and peripheral components, and complete the corresponding software and hardware debugging, based on AT89C51 microcontroller for digital system, and digital temperature sensor DS18B20 for single bus digital temperature sensor,

Therefore, the use of DS18B20 to achieve temperature signal acquisition and conversion.