Digital Electronics - Flip-Flops - Discussion

Discussion Forum : Flip-Flops - General Questions (Q.No. 27)
27.
A J-K flip-flop with J = 1 and K = 1 has a 20 kHz clock input. The Q output is ________.
constantly LOW
constantly HIGH
a 20 kHz square wave
a 10 kHz square wave
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
25 comments Page 1 of 3.

Dharani said:   3 years ago
Well explanation, Thankyou so much @Jay.

Farhan said:   5 years ago
The flip flop is sensitive only to the positive or negative edge of the clock pulse. So, the flip-flop toggles whenever the clock is falling/rising at edge. This triggering of flip-flop during the transition state, is known as Edge-triggered flip-flop. Thus, the output curve has a time period twice that of the clock. Frequency is inversely related to time period and hence frequency gets halved.

Rohu said:   6 years ago
Thaks @Jay.

M.DHANA said:   6 years ago
Why we are getting toggle state in J-K flip flop? Why it is coming in that state?

Please tell me.

Rajesh Koothrappali said:   7 years ago
Very useful, Thanks for it @Jay.

Dhivya S said:   8 years ago
Thankyou @Jay.

Nagaraju said:   9 years ago
@Jay.

I understand very well, Thank you.

Sunil gangwar said:   9 years ago
@Satyapriya.

You may be wrong because your answer is not defined, what are you input applied?

Jessy said:   9 years ago
When J = 1 and K = 1 outputs of JK flip flop are:

A) Qn+1=0
B) Qn+1=1
C) Qn+1=Q
D) Qn+1=Q\'

Give me the answer of this question.

Priyanka said:   9 years ago
Excellent @Shreyas.


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