一个vb实现的倒计时器，在计时演讲等方面有用。-Countdown to the implementation of a vb, and Speech, etc. at the time useful.

软件开发的会议发言计时器， 功能实用方便，在WINDOWS 下就可以操作-Session timer to MCS51 single-chip microcomputer as the core, the realization of the meeting from time to time to remind the function of speech, you can set time, the countdown, suspension, or a buzzer to remind l