Classical

Digital Logic - Combinational Circuits

66:  

An example of a universal building block is:

A.

EX-OR gate

B.

AND gate

C.

OR gate

D.

NOR gate

 
 

Option: D

Explanation :


67:  

The dual ofthe switching function x + yz is:

A.

x+yz

B.

x̄ + ȳz̄

C.

x(y+z)

D.

x̄(ȳ + z̄)

 
 

Option: C

Explanation :


68:  

The characteristic equation of D flip-flop is:

A.

Q = 1

B.

Q = 0

C.

Q = D̄

D.

Q= D

 
 

Option: D

Explanation :


69:  

If four 4 input multiplexers drive a 4 input multiplexer, we get a:

A.

16 input MUX

B.

8 input MUX

C.

4 input MUX

D.

2 input MUX

 
 

Option: A

Explanation :




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