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Digital Electronics

Digital Electronics
Positive integers must be represented by

 Both A and B
 unsigned number
 signed numbers
 None of these

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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?

 2:1
 2:3
 1:1
 1:2

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Digital Electronics
2-out-of-5 code is

 weighted code
 self-complementing code
 alphanumeric code
 non-weighted code

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Digital Electronics
The X-OR and X-NOR gates can have how many inputs?

 any number
 1
 4
 2

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Digital Electronics
A small circle or dot on top of an IC represents

 Pin13
 Pin2
 Pin1
 Pin14

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Digital Electronics
The number of parity bits in a 12-bit Hamming code is

 4
 8
 6
 5

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