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Homework Help: Determine the Main Cycle of a Counter (JK flip-flops)

  1. Sep 22, 2013 #1
    The problem statement, all variables and given/known data
    For the counter shown below, determine the main cycle, and for each of the unused states, show what happens if it starts up there.

    http://i45.tinypic.com/33l1lhc.jpg

    Relevant equations
    N/A


    The attempt at a solution
    Based on the diagram in the link I provided, I know that:

    JA = QB'
    KA = 1
    JB = QC'
    KB = QC
    JC = QA
    KC = QA

    The problem is I do not know what to do after that. Can anyone explain to me how to do this? Thanks.
     
  2. jcsd
  3. Sep 23, 2013 #2

    mfb

    User Avatar
    2017 Award

    Staff: Mentor

    Do you know how a JK flip-flop works?

    What happens if A,B,C are active and we get the next clock cycle?
    What happens if A,B,C' are active?
    What happens for all other combinations?
     
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