What about Counters?
Posted: Fri May 20, 2011 11:49 pm
I tried many times to build a counter using Flip Flops but the main problem is that those flip flop does not read or act on raising and falling edges!!, so what is the solution
LogicCircuit – is free, open source educational software for designing and simulating digital logic circuits.
https://mail.logiccircuit.org/forum/