digital problem....

Discussion in 'The Projects Forum' started by vixabs, Aug 29, 2010.

  1. vixabs

    Thread Starter New Member

    Aug 24, 2010
    1
    0
    i am building a multisim circuit of a digital clock that counts from 1 to 12. i use 74LS90 IC.. my problem is that i don't know how to make an indicator that indicates am or pm... also, if a am going to make an actual circuit i don't know how to provide the clock pulse... can you please help me... i have attached the design of my circuit for you to verify... i really need your help...
     
  2. windoze killa

    AAC Fanatic!

    Feb 23, 2006
    605
    24
    You could try using a flip flop that is triggered each time 12 is reached. Have the output turn an LED on and off.
     
  3. AMIT_GOHEL

    Member

    Jul 13, 2010
    67
    7
    However you can not get AM & PM writen in 7segment,but you probably create words like A & P from it.
    and to make it toggle at 12 hour you can design counter..
     
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