捕捉各个按键按下时的键值及消息码,包括虚拟键值及ASCII码键值.-Capture all the key button is depressed and the message code, including the virtual keys and the ASCII key code.

8051 keil ,c 連續key的scank寫法,有短按,長按,按超過3秒-8051 keil ,c key scan,has short key,long press key,over 3 second key

pic单片机中的一个源码，用来实现一个扫描-pic microcontroller in a source code used to implement a scan