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    Design of Counters using JK flip flops

    Hi, I want the procedure to Design of Counters using JK flip flops. I have seen question like, some input & output equations will be given & we should provide the state diagram, state table, state equation & logic (circuit) diagram.

    I don't know if its a synchronous or asynchronous?

    Bye,
    PRAVARDHAN

    •   Alt31st May 2008, 16:27

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    Re: Design of Counters using JK flip flops

    this is a bistable multivi brator.


    for circuits see this

    Added after 27 seconds:

    http://www.play-hookey.com/digital/j...flip-flop.html



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    Design of Counters using JK flip flops

    pravardhan,...

    What kind of counters (BCD, binary, Decimal, up-down,...)?
    All can be designed using state diagrams and K-Map.
    I have a lot of designes, just name the counter and I'll provide you with design.



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    dmk
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    Re: Design of Counters using JK flip flops

    Try this:



    •   Alt2nd June 2008, 11:27

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    Re: Design of Counters using JK flip flops

    Ok, the question is like this:

    A sequential circuit has two flip flops (A and B), two inputs (x and y) and an output z. The flip flop functions and the circuit output functions are as follows:

    JA = xB+yB' KA = xy'B'
    JB = xA' KB = xy'+A
    z = xyA+x'y'B

    Obtain:

    a) logic diagram
    b) state table
    c) state diagram
    d) state equations


    The question is taken from the Book:
    Digital logic and computer design by Morris Mano.

    The page number is 254 & question number is 6-13.
    The partial answer is given in page no. 597

    But, i couldn't get how he formed the table?

    Thanks in advance,
    PRAVARDHAN



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    Design of Counters using JK flip flops

    I'm sorry, but.. What are the (x and y)? The inputs of what?
    The two Flip_Flops have (JA,KA,QA,Q'A,JB,KB,QB,Q'B) what are the (x and y)?



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    Re: Design of Counters using JK flip flops

    Hi seadolphine,

    Um.. There will be some gates between the Flip-Flops and the two inputs - x & y, as well as at the output.

    And, the outputs of flip-flops are A,A',B & B' and the inputs are JA,KA,JB & KB.

    Bye,
    PRAVARDHAN



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    Re: Design of Counters using JK flip flops

    Quote Originally Posted by seadolphine2000
    pravardhan,...

    What kind of counters (BCD, binary, Decimal, up-down,...)?
    All can be designed using state diagrams and K-Map.
    I have a lot of designes, just name the counter and I'll provide you with design.
    hi seadolphine,
    can you provide me a design of counter up and down 0-99/99-0 ???
    :D



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    Re: Design of Counters using JK flip flops

    The following link shows you not only how to design the multivibrator circuit but also how to present the work:

    http://www.teahlab.com/multivibrator...rslaveff.html#


    Let me know if you have more questions.



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