digital clock

Discussion in 'The Projects Forum' started by prizm, Apr 22, 2010.

  1. prizm

    Thread Starter New Member

    Apr 22, 2010
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    In my digital class we have been asked to design a digital clock using alteris. Using the onboard oscillator as a time base it must be presettable, display hours minutes and seconds but only use two seven segment LCDs. A multiplexer must be used. Im at a loss for ideas and many other students hardly no where to begin. i understand the frequency division but after that im at a loss. Taking a 4Mhz signal to 1hz
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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    Do you understand the concept of counters? That's all a digital clock is. The display just takes turns showing hours and minutes (seconds, too?).

    What did you use to produce the 1 Hz clock?

    If you can count down, you can also count up. Look at presettable counters like a 74LS161 for some inspiration.
     
    prizm likes this.
  3. retched

    AAC Fanatic!

    Dec 5, 2009
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  4. Wendy

    Moderator

    Mar 24, 2008
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    Ahhh, design a clock season in college.

    [​IMG]
     
  5. prizm

    Thread Starter New Member

    Apr 22, 2010
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    i used 74161 ones for frequency division and 74160 to gain my seconds etc. it just was a matter of messing with it i figured it out on my own just the dawnting task of having to find time to analyze my problem. appreciate the help
     
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