新命名

I can't believe in your English.

我真不敢相信你的英语。

The two two-bit-seven-segment displayers are used to display the count-down time in the normal condition.And when the system works in the time setting condition,the displayers display time in the format hh:mm.

并且系统正常运行时，两个两个七段数码管显示倒计时，当系统工作在时间设置状态时，显示系统时间，（显示格式 hh：mm ）。