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Electronics and Communication Engineering - Digital Electronics - Discussion

Discussion Forum : Digital Electronics - Section 1 (Q.No. 25)
Digital Electronics
25.
In a ripple counter,
whenever a flip flop sets to 1, the next higher FF toggles
whenever a flip flop sets to 0, the next higher FF remains unchanged
whenever a flip flop sets to 1, the next higher FF faces race condition
whenever a flip flop sets to 0, the next higher FF faces race condition
Answer: Option
Explanation:

In a ripple counter the effect ripples through the counter.

Discussion:
11 comments Page 2 of 2.
Vishnu said:   4 years ago
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.
(1)
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