用单片机及位LED数码管显示时分秒，以及24时的计时方式运行。能够整点提醒（短蜂鸣，次数代表整点时间），使用按键开关可实现时，分调整，秒表/时钟功能转换，省电（关闭显示）及定时设定提醒（蜂鸣器）等功能-With the microcontroller and LED digital tube display minutes and seconds, and 24 hours of run time. Reminded that the whole (short beep, the number