Abstract
This paper set up a data acquisition system by AT89C52 single chip microcomputer as control core, using the RS-232 serial manner communicated with responsibled for data acquisition of microprocessor, and used LED to display. System can be divided into data acquisition module, serial communication module, control module, keyboard module, display module, etc. System of multi-channel data acquisition can be displayed in the LED after processed. The hardware circuit and software realized design functions :data acquisition and LED display.
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