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Digital Electronics

Digital Electronics
The 1’s complement of 11010111 is

 00101000
 10101000
 10101000
 11101000

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Digital Electronics
An X-OR gate gives a high output

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

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Digital Electronics
In signed magnitude representation, the binary equivalent of 22.5625 is (the bit before comma represents the sign)

 0,10110.1001
 1,10110.1001
 1,10101.1001
 0,10110.1011

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 a NAND or an X-OR
 an OR or an X-OR
 an OR or an X-NOR
 an AND or a NOR

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Digital Electronics
The voltage levels for positive logic system

 must necessarily be negative
 may be positive or negative
 must necessarily be 0 V and 5 V
 must necessarily be positive

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Digital Electronics
One bit full adder has ________ inputs

 2
 3
 any number
 4

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MORE MCQ ON Digital Electronics

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