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Digital Electronics

Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 1:2
 2:3
 1:1
 2:1

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 1, B = 0, C = 1
 A = 1, B = 1, C = 1
 A = 1, B = 1, C = 0
 A = 0, B = 0, C = 0

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Digital Electronics
The data bus width of a ROM of size 2048 × 8 bits is

 8
 12
 10
 16

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Digital Electronics
Minimization of logical expressions while designing digital systems helps in reducing

 power requirements
 space requirements
All of these
 cost

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Digital Electronics
(FE35)16 XOR (CB15)16 is equal to

 (3520)16
 (FF50)16
 (3320)16
 (FF35)16

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Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 12
 10
 9
 6

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