Binary counter using JK F/F and 555

Discussion in 'General Electronics Chat' started by francisco767, Jun 27, 2010.

  1. francisco767

    Thread Starter New Member

    Jun 27, 2010
    1
    0
    hello, i need help!!!
    in a laboratory i must make a 4 bits counter up/down using flip flop JK and a 555 as a clock, somebody can help me???
    when a made one, this don´t run!!
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Show us your schematic. Did you ground your inputs that aren't being used?

    Welcome aboard!
     
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