Correct 2^4=16, so 4 flip-flops can represent 16 different, unique states. Only 12 of the 16 are useful to you. What happens to your counter if it accidentally gets into one of the 4 unused states?I think 4 flip flips.
Sure. You make your best effort. Post it here, and then we will comment on it. That way, you learn something...Can i send you truth table so you could tell me is it right?
i agree . . . but is it a solution ? . . . i barely got it work coz the maladies of a simplistic simulatorjust hand out a solution
ok, you list the [output states to][output states from] whitch is an alternate to https://en.wikipedia.org/wiki/Digital_timing_diagramthe table
Here's the table