Electronics and Communication Engineering - Digital Electronics - Discussion

Why only a is correct because as per me let positive clock is applied and the flip flop is either jk (active) or t ff. When t is 1 then its output toggle and this is now the clock of the next ff which will toggle next ff and hence A is correct.

But wait.

Is b also correct?

When t of the first ff is 0 then its o/p is the same or memory lets the initial states of ffs are 00 then at t=0 output of the next ff is unchanged.

So as per me, both A and B is correct.

Here, Both A and B conditions are correct.

According to me, B is the right answer.

Actually the o/p of FF in ripple counter is toggles when there is a transition of either 0 to 1 or 1 to 0, depending on the clock is positive edge or negative edge triggered.

Both option A and B are correct I think.

Why not B? I think option B is also right.

If counter is made up of JK FF then for input 11 output will Toggle (change from 0 to 1 or vice versa).

@Varsha.

Toggle means all input state 11.

I hope the output toggles when the state changes from to 1 to 0.

But I can't get the question?

Changing from one state to other.