reset for J-K flip flop bcd counter

Discussion in 'Homework Help' started by jepoy, Feb 23, 2011.

  1.  
    jepoy

    jepoy Thread Starter New Member

    Joined:
    Oct 1, 2010
    Messages:
    15
    I made a counter using this design and it works fine.[​IMG]
    and now Im planning to make a reset button for it but I don't know how to do it. I already looked at the j-k flip flop datasheet and read its truth table then tried changing the J or K input to "0" but it didnt reset.
    Need help here. ( ;
  2.  
    Georacer

    Georacer Moderator Staff Member

    Joined:
    Nov 25, 2009
    Messages:
    4,875
    Location:
    Athens, Greece (GMT +2)
    Pins 3 and 8 of the 7476 are clear pins activated on LOW. They work asynchronously. Try them out.
    jepoy likes this.
  3.  
    jepoy

    jepoy Thread Starter New Member

    Joined:
    Oct 1, 2010
    Messages:
    15
    I tried but it only pause the counting.
    should I do it on all 7476 IC's?
  4.  
    jepoy

    jepoy Thread Starter New Member

    Joined:
    Oct 1, 2010
    Messages:
    15
    nvm...
    thanks for the help great man Geo. ( ;
  5.  
    Georacer

    Georacer Moderator Staff Member

    Joined:
    Nov 25, 2009
    Messages:
    4,875
    Location:
    Athens, Greece (GMT +2)
    Yes, as I guess you found out, you must reset all 4 JK-FFs simultaneously for the counter to return to 0.
Similar Threads: reset flip
Forum Title Date
Homework Help Designing a Vending Machine... including resets and flip flops Apr 8, 2013
Homework Help 0-60 Counter, with Start/Stop and Reset functions. Nov 6, 2013
Homework Help op-amp integrator with reset May 24, 2013
Homework Help 4 bit synchronous dff counter that resets at 5 Apr 11, 2013
Homework Help MOD-60 counter with start/stop and reset Jan 11, 2013

Share This Page