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Overview

The P1 interface of the 51 microcontroller controls the columns of the first dot matrix screen, the P3 interface controls the columns of the second dot matrix screen, and the P2_4 interface inputs different high and low levels to the first 74HC595 chip to control the first dot matrix. The P2_7 interface inputs different high and low levels to the second 74HC595 chip to control the rows of the second dot matrix screen. When the interface of the dot matrix screen senses different levels, it will display different positions. When these positions are combined, the desired pattern will be displayed.

Design Files

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Update:2025-06-19 00:13:53

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