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Digital Electronics

Digital Electronics
What is the gray code for the binary 101011?

 111110
 101011
 110101
 011111

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Digital Electronics
Convert the binary number (1111000011110000) to hexadecimal number

 5050
 F0F0
 1010
 7070

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Digital Electronics
The time required for a gate to change its output is called as

 propagation time
 run time
 start time
 Decay time

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Digital Electronics
The number A = 01110000 and B = 10101111 are in 2’s complement form .Addition of above two number is

 11100000
 00011111
 011100001
 10101111

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

 Both (I) & (II)
 Both (I)&(IV)
 Both (II)&(III)
 Only (II)

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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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