说明：  按键处理，可以说，是做单片机的朋友的一项必须掌握的基本功。在本文中，匠人将试 着对按键的检测及处理做一些肤浅的分析m击键类型的划分有多种方式，比如： a) 按照击键时间来划分，可以分为“短击”和“长击”； b) 按照击键后执行的次数来划分，可以分为“单击”和“连击”。 c) 另外还用一些组合击键方法，如“双击”或“同击”等等。然后给出流程图，共三个文件
(Key processing can be said, is to do a friend a microcontroller must master basic skills. In this article, craftsmen will try to detect and deal with on the button to do some type of superficial analysis of m keystrokes into a variety of ways, such as: a) time to divide by keystroke, can be divided into " short-strike" and " long strike " b) in accordance with the number of keystrokes to perform after the division can be divided into" click " and" batter. " c) some combination of keystrokes also use methods such as " double" or " with the hit" and so on. Flow chart and then gives a total of three files)