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Digital Electronics

Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 none
 2.
 1.
 both are same

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Digital Electronics
A gate is enabled when its enable input is at logic 1. The gate is

 NAND
 none of these
 NOR
 OR

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Digital Electronics
What is the Boolean expression for a two-input AND gate ?

 A.B
 A - B
 A & B
 A + B

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Digital Electronics
A single flip-flop can be cleared (reset) to

 1
 None
 Both A and B
 0

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Digital Electronics
A full adder has

 3 inputs, 1 output
 2 inputs, 1 output
 2 inputs, 2 outputs
 3 inputs, 2 outputs

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Digital Electronics
Which of the following is 1’s complement representation of -34?

 01011101
 10100010
 11011110
 11011101

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