down counter using jk ff

Discussion in 'The Projects Forum' started by siatong, Oct 26, 2008.

  1. siatong

    Thread Starter New Member

    Oct 20, 2008
    4
    0
    I am creating a down counter circuit in workbench using jk ff,I have made the circuit I was not convince with the result because the counter starts at 3 then down to 0,then vice versa.. please help me on what to do ,I want to start the counter from 9 down to 0...
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    Take a look at the internal schematic of the hef4029, a up/down counter.

    Greetings,
    Bertus
     
  3. siatong

    Thread Starter New Member

    Oct 20, 2008
    4
    0
    I am a little bit confuse as I look into the internal schematic of hef4029.Any sugestion pls...
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Set initial states on paper and work out how the logic responds to each clock pulse. A bit time-consuming, but you get to see how the logic works.
     
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