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Digital Electronics

Digital Electronics
A 15-bit Hamming code requires

 15 parity bits
 5 parity bits
 none of these.
 4 parity bits

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Digital Electronics
The output of a NOR gate is high

 only when all the inputs are high
 only when at least one input is low
 only when at least one input is high
 only when all the inputs are low

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Digital Electronics
The binary equivalent of hexadecimal number 4F2D is

 0101 1111 0010 1100
 0100 1111 0010 1100
 0100 1111 0010 1101
 0100 1110 0010 1101

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Digital Electronics
A bubbled NOR gate is equivalent to a

 NAND gate
 X-OR gate
 NOR gate
 AND gate

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Digital Electronics
Which of the following operations is commutative but not associative?

 OR
 X-OR
 NAND
 AND

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Digital Electronics
The voltage levels for positive logic system

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

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MORE MCQ ON Digital Electronics

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