Description: This paper designed a water temperature based on AT89S52 MCU control system, the lower computer, host computer, and communications network composed of three parts. Lower machine is based on the MCU AT89S52 and temperature sensor DS18B20 of precision data acquisition system, the detection function of the temperature and output. Host computer by computer, and the next data bit machine interaction, and display temperature from various quarters and the curve, control parameters, setting, etc
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