1． 设计一个能在0～60分钟内定时的定时器

2． 定时开始工作红指示灯亮，结束时绿指示灯亮

3． 可以随意以分为单位，在60分范围内设定定时时间

4． 随着定时的开始，显示器显示时间，如定时10分，定时开始后显示器依次是0-1-2-3-4-5-6-7-8-10进行即时显示

5． 定时结束时，手动清零-1. Design a 0 to 60 minutes in the Timing of Timer 2. Time to work the red light, green light at the end of 3. Can be arbitrarily divided into units of 60 minutes within the time set timer 4. With the beginning of time, display time, such as the regular 10 minutes after the start time followed by 0-1-2-3-4-5-6-7-8-10 display real-time display 5. The end of time, manually cleared