Making an Up/Down Counter with JKs

[PrestonBlake]

So as an aside during class my ECE lab TA mentioned that you could make an up/down counter using nothing but JK flip flops, we've already done an up/down counter using JKs, AND gates, and OR gates, and I understand how you could make an up counter by taking the Q prime from one flip flop and making it the clock for the next one. Is it possible to make an up/down counter using nothing but JKs and if so how?

 

[NascentOxygen]

Hi PrestonBlake. Have you tried a google search? Counters tend to hurt my brain, but take a look at Q17 here: http://www.ibiblio.org/kuphaldt/socratic/output/counters.pdf[/color]