Modulo Down Counters

Discussion in 'Homework Help' started by Denny1234, May 25, 2009.

  1. Denny1234

    Thread Starter Member

    Feb 17, 2008
    Hey I want to design a mod 5 down counter with a negative edge triggered jk bistables

    All the examples I have seen have shown an up counter with the reset applied when the max number (and its equiv binary value) is acheived - then the count returns to 0.

    In a down counter, Im not sure how to reset so that when it gets to value 0like so 5,4,3,2,1,0 - it resets back to 5,4,3,2,1,0 etc

    I guess what i trying to say is how do i apply a reset to my 3 negative edge triggered j-k flip flops so that it goes from 5 down to 0 and then back to 5?

    Its not homework but i think it will come up inb my exam tmoro!

    Can anyone help?
    Last edited: May 25, 2009