digital clock

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

  1. prizm

    Thread Starter New Member

    Apr 22, 2010
    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
    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
  4. Wendy


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

  5. prizm

    Thread Starter New Member

    Apr 22, 2010
    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