实现功能：

1.使用T0中断，对LED进行2ms一次的动态扫描

2.使用T1中断，0.5ms一次作Beep的驱动

3.实现时钟的功能

4.实现UART的中断发送功能

5.用两个按键调整时钟，有去抖动能力，一个为调整设置键，另一个为加一键

6.调整时钟时，按键有BEEP提示，且LED有闪动提示，无按键10秒后自动恢复正常显示-achieve functions : 1. Interruption of the use of T0, LED right for a 2 ms two dynamic scanning. interruption of the use of T1, Beep 0.5ms for a three drivers. Clock achieve functional 4. UART Interrupt achieve this function 5 . with two keys clock adjustment, the ability to jitter, a key set of adjustments, plus another for a key 6. Clock adjustment, BEEP suggest a button and a flashing LED suggest that no keys automatically 10 seconds after the resumption of normal shows