This paper proposes a design and implementation method of a multi-channel data acquisition system with PIC16F877 single-chip microcomputer as the core device. The system uses the 8-channel 10-bit A/D conversion module and multiple input and output ports of the PIC single-chip microcomputer to realize the functions of cyclic acquisition, fixed channel acquisition, real-time processing and display of 8-channel data with minimal hardware overhead. It has the characteristics of simple circuit, high precision, low power consumption, strong anti-interference ability and strong versatility. Keywords: multi-channel data acquisition system} PIC single-chip microcomputer; A/D conversion; real-time control Classification number: TP274+. 2 Document identification code: A
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