VHDL language used to achieve a display hours, minutes and seconds of the clock:...

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用VHDL语言实现一个能显示时、分、秒的时钟：可分别进行时和分的手动校正；12小时、24小时计时制可选，12小时制时有上下午指示；当计时到预定时间（此时间可手动设置）时，扬声器发出闹铃信号，闹铃时间为10秒，可提前终止闹铃。-VHDL language used to achieve a display hours, minutes and seconds of the clock: when can be manually corrected and points 12 hours, optional 24-hour time system, 12-hour on the afternoon of instructions from time to time when the time to the scheduled time (This time can be manually set), the speaker sent alarm signals, alarm time was 10 seconds, the alarm can be terminated prematurely.