ABSTRACT
ABSTRACT: The digital multi-channel temperature acquisition system is consisted of main controller, temperature gathering electric circuit, temperature display circuit, alarm circuit and keyboard control circuit. MCU AT89C51 is used as the controller and the data processor. The intelligent temperature sensor DS18B20 is used as the temperature detector. The LED digital display tube is used as the temperature display device. The hardware circuit is simple, and has the advantages of low cost, large measuring range, high measuring precision, displaying intuitive and easy to use.
