Classical

Digital Logic - Sequential Circuits

21:   The dynamic hazard problem occurs in
A. Combinational circuit alone
B. Sequential circuit only
C. Both (a) and (b)
D. None of these
 
 

Option: C

Explanation :

Click on Discuss to view users comments.

Write your comments here:



22:  

A n-stage ripple counter will count up to

A.

2n

B.

2n-1

C.

n

D.

2n-1

 
 

Option: A

Explanation :

Click on Discuss to view users comments.

Write your comments here:



23:   The clock signals are used in sequential logic circuits to
A. Tell the time of the day
B. Tell how much time has elapsed since the system was turned on
C. Carry parllel data signals
D. Synchronize events in various parts of system
 
 

Option: D

Explanation :

Click on Discuss to view users comments.

Write your comments here:



24:   74L5138 chip functions as
A. Decoder/demultiplexer
B. Encoder
C. Multiplexer
D. Demultiplexer
 
 

Option: A

Explanation :

Click on Discuss to view users comments.

Write your comments here:



25:   A sequential circuit outputs a ONE when an even number (> 0) of one's are input; otherwise the output is ZERO. The minimum number of states required is
A. 0
B. 1
C. 2
D. None of these
 
 

Option: C

Explanation :

Click on Discuss to view users comments.

Write your comments here:


'>



*********
X