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Digital Electronics

Digital Electronics
A demultiplexer is a

 1-to-1 device
 1-to-N device
 N-to-1 device
 N-to-N device

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

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Digital Electronics
Which one of the following is 2’s complement of -68?

 11000100
 01111100
 10111100
 00111100

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Digital Electronics
The set of which logic gates is designated as universal gate?

 NOT, OR , AND.
 XNOR, NOR, NAND.
  NOR , NAND.
 XNOR, NOR, NAND.

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Digital Electronics
Which is the correct order of sequence for representing the input values in K-map?

(00, 10, 01, 11)
(00, 01, 10, 11)
(00, 10, 11, 01)
(00, 01, 11, 10)

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Only (II)
 Only (III)
 Both (I)&(III)
 Both (II)&(III)

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