need a circuit diagram of 24 hour digital clock

Discussion in 'The Projects Forum' started by lenn24, Jan 23, 2009.

  1. lenn24

    lenn24 Thread Starter New Member

    Joined:
    Jan 23, 2009
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    6
    hi guyz..need some help..we have project regarding a 24-hour clock..we will use the asynchronous counter..we have problem when it comes to hours..pls help me..
  2. beenthere

    beenthere AAC Fanatic!

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    It sounds like you have been able to counts seconds correctly. Do the same thing - use an external AND gate to reset the hours counter string to zero when the count = 24.

    There are several types of asynchronous counters - some in binary and others with BCD outputs. There are also several different logic families. It helps to be specific about these things when asking for help.
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