这是一个能够不触摸就能检测到按键是否按下的芯片的编程源代码，我已经使用过很多次了，很好用，是模块式的可以和任何单片机结合使用。-This is a can not touch can detect whether keys pressed chip programming source code, I have used many times, very good, is the module type can be used in conjunction with any single chip microcomputer.