按键的状态机实现，可以实现，短按，长按。连击等效果。-The keys of the state machine, could achieve, short press, long press. Batter and other effects.

stc89c52实现按键长按短按效果，很不错的 -stc89c52 key long press the short effect, very good

使用STC89C52单片机，显示按键长按和短按效果，按键加减数字，多个数码管显示，使用定时器做数码管动态扫描 并区别长按短按效果，完全可以应用的实际生产中。-Using STC89C52 microcontroller, display the key long press and short press effect, the key addition and subtraction digital, multiple digital tube display, use a timer to

57-按键长按短按效果(57- button length, press the short effect)