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Digital Clock Circuit Design

Discussion in 'Electronic Basics' started by Lance, Nov 10, 2003.

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  1. Lance

    Lance Guest

    Can anyone point me to a website which highlights a Digital Clock Circuit
    design using 7400 TTL series chips?

    I plan to have 'hours', 'minutes', and 'seconds' on this clock.


  2. Man, it's so easy to build one... Use the 4511 (counter + latch), and a
    few of logical gates will help you to increase minutes after 60 seconds,

  3. Bill Bowden

    Bill Bowden Guest

    There is a digital clock using the newer 74HC parts here:

    The basic clock uses 7 ICs and the display uses another 5.
    Two of the display digits are multiplexed for minutes or
    seconds so you only need 4 digits for hours, minutes and seconds.

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