单片机系统键盘的设计小结 有详细电路图和部分代码

单片机系统键盘的设计小结 有详细电路图和部分代码-Single-chip microcomputer system design summary of the keyboard has a detailed circuit diagram and some code

? 键盘在单片机应用系统中，实现输入数据、传送命令的功能，是人工干预的主要手段。键盘分两大类：编码键盘和非编码键盘。(In the application system of single chip microcomputer, keyboard is the main means of manual intervention, which can realize the function of input data and comma