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1602液晶+MM74C922+矩阵键盘.pdsprj

于 2022-01-11 发布
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代码说明:

1602液晶 MM74C922 矩阵键盘.pdsprj 矩阵键盘通过MM74C922接单片机可以节省几个端口,而且程序更简单,易操作。

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