本文件解压后clock_time.vhd采用编程环境maxplusII，完成时间秒定时、记时，设置时间秒、声光报警等功能。-this document unpacked clock_time.vhd maxplusII use programming environment, the time for completion seconds timing, Hutchison, the set-up time seconds, sound, light, alarm functions.

蜂鸣器源代码——此代码为蜂鸣器的基础代码，可在此基础上加入LED灯的声光报警系统或蜂鸣器的滴滴声程序-Buzzer source code- the code for the buzzer code base can be added on the basis of sound and light LED light or buzzer alarm system sound program of pieces