Design a counter using JK flip flops

Discussion in 'Homework Help' started by slider203, Jan 18, 2010.

  1. slider203

    Thread Starter New Member

    Jan 18, 2010
    2
    0
    Hello I am doing the grade 11 computer engeneering course and I was doing my homework when I got stuck on a question that says "Design a counter using J-K flip flops that will count in the following sequence: 0,2,5,1,3" would some one please help a newbie like my self make this counter. I have been trying for hours and still dont know how to do it.
    Thanks any help is apperciated

    EDIT: beenthere first we have to create a truth table (I did that)

    t t+1
    Q2 Q1 Q0 Q2 Q1 Q0
    0 0 0 0 1 0
    0 1 0 1 0 1
    1 0 1 0 0 1
    0 0 1 0 1 1
    1 1 1 0 0 0

    then we had 2 draw truth tables did that too.
    but then we have to make the truth tables into a diagram thats were Im getting stuck...this is what the diagram looks like:
    ____________ __________ ___________
    |J2 Q2 | |J1 Q1| |J0 Q0|
    | | | | | |
    O>CLK | O>CLK | O>CLK |
    | _ | | _ | | _ |
    | K2 Q2| |K1 Q1 | |K0 Q0 |
    --------------- ------------- -------------
    (I know its a bit rough but you get the idea..I hope)
     
    Last edited: Jan 19, 2010
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    280
    Can you show us your work? We may be able to see where you got stuck.
     
  3. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    try Google and the term karnaugh synchronus counter. This should get you started
     
  4. knowitall

    New Member

    Jan 10, 2010
    17
    0
    Are you allowed to use any additional componants, like diodes or decoders,or a reset switch?
     
  5. slider203

    Thread Starter New Member

    Jan 18, 2010
    2
    0
    we can use a reset switch also we are using the chips 7490, 7992, 7493
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    280
    Get the data sheets for those chips - you might be surprised to see what they are. Google "sn7490", sn7492, sn7493" and follow the links for the data sheets.
     
    asmaa_123_Shaheen likes this.
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