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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

 both are same
 1.
 2.
 none

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Digital Electronics
Which of the following operations is commutative but not associative?

 X-OR
 NAND
 OR
 AND

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Digital Electronics
What is the minimum number of NAND gates required to realize an X-OR gate?

 3
 4
 6
 5

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Digital Electronics
A combinational circuit can be designed using only

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

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Digital Electronics
Logic circuits are

 none of these
 digital circuits
 analog circuits
 hybrid circuits

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Digital Electronics
9’s complement of 52784630 is

 48225469
 58326479
 57316379
 47215369

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