Classical

Digital Logic - Sequential Circuits

21:   The functional difference between S-R flip-flop and J-K flip-flop is that J-K flip-flop
A. is faster than S-R flip-flop
B. Has a feed-back path
C. Accepts both inputs 1
D. Both (a) and (b)
 
 

Option: C

Explanation :


22:   In a positive edge triggered JK flip-flop, a low J and low K produces
A. No change
B. Low state
C. High state
D. None of these
 
 

Option: A

Explanation :


23:  

When an inverter is placed between both inputs of an SR flip-flop, then resulting flip-lop is

A.

JK flip-flop

B.

D flip-flop

C.

SR flip-flop

D.

Master slave JK flip-flop

 
 

Option: B

Explanation :


24:   A 2 MHz signal is applied to the input of a J-K lip-lop which is operating in the 'toggle' mode. The frequency of the signal at the output will be
A. 1 MHz
B. 2 MHz
C. 6 MHz
D. 8 MHz
 
 

Option: D

Explanation :

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25:   The master slave JK lip-flop is effectively a combination of
A. A SR flip-flop and a T flip-flop
B. An SR flip-lfop and a D flip-flop
C. A T flip-flop and a D flip-flop
D. Two D flip-flops
 
 

Option: A

Explanation :




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