这个程序根据你的计算机系统时间允许你设置一个闹钟(The program from your computer system time allows you to set an alarm clock)

数字闹钟的实现功能,将系统时间与当前窗口结合起来,很适合初学者学习使用(The realization of the digital alarm clock function, combine the system time and the current window, is very suitable for beginners learning to use)