hi,
i an countering the similar problem
the different is that i have to use a AND gate and a JK flip flop
can anyone show me how, asap?

 

Welcome to AAC.

Your post was in a year old thread - http://forum.allaboutcircuits.com/showthread.php?t=18403 - so now it has its own.

Give us a complete statement of your assignment and what is causing you problems.

 

i'm doing a mod 16 down counter with 7493