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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

 2.
 1.
 none
 both are same

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Digital Electronics
X + X.Y = ?

 1
 0
 X
 Y

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Digital Electronics
The logic expression AB can be implemented by giving the inputs A and B to a two-input

 X-OR gate
 NAND gate
 X-NOR gate
 NOR gate

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Digital Electronics
Positive integers must be represented by

 unsigned number
 Both A and B
 signed numbers
 None of these

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Digital Electronics
To get an excess-3 code from BCD code

 0110 is added
 0011 is added
 0110 is subtracted
 0011 is subtracted

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Digital Electronics
If a Hexadecimal number needs to convert to binary. For each hexadecimal digit, there will be how many bits

 4
 1
 2
 8

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