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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

 1.
 none
 2.
 both are same

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an OR gate?

 AND
 NAND
 X-NOR
 NOR

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Digital Electronics
In Boolean algebra AND is represented by

 ×
 +
 /
 -

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

AND operation
NOT operation
None of these
OR operation

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Digital Electronics
What is the radix of octal number system ?

 16
 10
 2
 8

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Digital Electronics
The set of which logic gates is designated as universal gate?

  NOR , NAND.
 XNOR, NOR, NAND.
 NOT, OR , AND.
 XNOR, NOR, NAND.

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