Delphi 写的一个定时器闹钟程序。又几种计算方法-A timer alarm clock program written in Delphi. Several calculation methods

　写了一个delphi小程序，有一个闹钟功能，当然还没有真正完成，主要是调用电脑的声卡发出音频，点击上边的按钮是发出“咚咚”声的按钮-Delphi write a small program, there is an alarm clock function, of course, have not really completed, the main issue is to call the computer' s sound card audio, click the upper bu