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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?

 2:1
 2:3
 1:1
 1:2

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Digital Electronics
An X-OR gate gives a high output

 for odd decimal value.
 if the decimal value of digital word is even
 if there are odd number of 1s
 if it has even number of 0s

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Digital Electronics
In digital systems, 1 byte is equal to ________ bit(s).

 4
 1
 2
 8

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Digital Electronics
The base of the number system for the addition operation 24 + 14 = 41 to be true is

 7
 8
 5
 6

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

NOT operation
OR operation
AND operation
None of these

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Digital Electronics
In Boolean algebra, OR is represented by

 -
 +
 ×
 /

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