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Digital Electronics

Digital Electronics
X + X.Y = ?

 Y
 X
 0
 1

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Digital Electronics
In simplification of a Boolean function of n variables, a group of 2m adjacent 1s leads to a term with

 m + 1 literals less than the total number of variables
 n – m literals
 m – 1 literals less than the total number of variables
 n + m literals

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Digital Electronics
Which of these circuits have higher gate complexity 1. Carry look ahead adder 2. Ripple carry adder

 both have same
 1
 2
 none

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Digital Electronics
A flip flop is a _______ circuit.

 Combinational
 None
 Both A and B
 Sequential

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Digital Electronics
In a read-only memory information can be stored

 by the user only once during its life time
 at the time of fabrication
 in any of the above ways depending upon the type of memory
 by the user a number of times

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Digital Electronics
A combinational circuit can be designed using only

 OR gates
 AND gates
 OR and X-NOR gates
 NOR gates

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