To design a 24-hour alarm clock with a timer which includes the following components: ① Display: 4 segment digital tube displays the current time (hours: minutes) or set the alarm time a light-emitting diode to the frequency of 1HZ beating, is used to display seconds ② keys key1, when used to set the tone or the tone pm ③ key key2, used to enter the new time or a new alarm time, every time you press, or points plus 1 ④ TIME ( time) key, used to determine the new time settings ⑤ ALARM (alarm) button, used to determine a new set alarm time, or set the alarm time is displayed ⑥ Speaker, in the current time and alarm clock the same time, issue beep.

VHDL-ALARM.doc

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