VHDL语言写的电子时钟，该数字电子钟能够实现时、分、秒计时功能；校准时和分的功能；校准时间时秒清零的功能；整点报时的功能；-written in VHDL，clock，count second，minute and hour

基于VHDL语言编写的EDA程序，可试小时分秒的自动进位，也可手动调时。-Based on Automatic carry EDA VHDL language program, you can try hour, minute and second, you can manually adjust the time.

12/24小时数字时钟VHDL设计 包括顶层文件的设计和VHDL源程序-12/24 hour digital clock design, including the top-level VHDL design and VHDL source code file