本文主要研究单片机（80C51）在多点温度采集控制系统中的应用。通过A/D转换器ADC0809把集成温度传感器AD590采集的经过处理的模拟信号转换成数字信号，然后把转换好的数据传送给单片机，由单片机对数据进行有目的得操作。如，在数码管上实时显示温度值，把数据传送给上位机等等。-this study SCM (80C51) in multi-point temperature Acquisition and Control System applications. Through A / D converters Connection between ADC 0809 put Integrated Temperature Sensor AD590 after the acquisition of analog signal processing converted into digital signals and then converting good data to microcontroller, SCM by the data for a purpose in the operation. For example, in digital real-time display tube temperature, the transmission of data to the PC, and so on.