Electronics and Communication Engineering - Digital Electronics - Discussion

25. 

In a ripple counter,

[A]. whenever a flip flop sets to 1, the next higher FF toggles
[B]. whenever a flip flop sets to 0, the next higher FF remains unchanged
[C]. whenever a flip flop sets to 1, the next higher FF faces race condition
[D]. whenever a flip flop sets to 0, the next higher FF faces race condition

Answer: Option A

Explanation:

In a ripple counter the effect ripples through the counter.


Varsha said: (Oct 7, 2014)  
Toggles means what?

Sudhaa said: (Feb 23, 2015)  
Changing from one state to other.

Teja said: (Aug 28, 2015)  
I hope the output toggles when the state changes from to 1 to 0.

But I can't get the question?

Amrita said: (Feb 5, 2017)  
@Varsha.

Toggle means all input state 11.

Varsha Singh said: (Oct 11, 2017)  
If counter is made up of JK FF then for input 11 output will Toggle (change from 0 to 1 or vice versa).

Nidhi said: (Jul 23, 2018)  
Why not B? I think option B is also right.

Dhanya said: (Jul 30, 2018)  
Both option A and B are correct I think.

Dhanya said: (Jul 30, 2018)  
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.

Chaitanya Kulkarni said: (Feb 1, 2019)  
According to me, B is the right answer.

Raaja Uday Kumar Reddy said: (Apr 10, 2019)  
Here, Both A and B conditions are correct.

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