数字时钟

设计要求:

1:可以正常准确的显示时间.

2:可以通过键盘输入来对时间进行调整.

3:能够以两种时钟表示方式显示时间.

4:自由发挥其他功能.-Digital Clock

Design requirements:

1: The normal display accurate time.

2: You can adjust the keyboard input time.

3: The clock can display the time in two representations.

4: free to play other functions.