Modulo Down Counters

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Denny1234

Joined Feb 17, 2008
27
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?
 
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