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文章从单片机系统键盘输入电路的各种方式入手,先后对各种不同输入方式进行了探讨,对带译码器扩展的动态扫描键盘输入方式进行了重点讨论和分析。
The article starts with the various ways of the input circuit of the keyboard of the single-chip microcomputer system, discusses the different input methods one after the other, and discusses and analyzes the input methods of the dynamic scanning keyboard with the decoder expansion.