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Digital Electronics

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

 01111100
 11000100
 10111100
 00111100

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Digital Electronics
A half adder has

 2 inputs and 1 outputs
 1 input and 2 outputs
 2 inputs and 2 output
 1 input and 1 output

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Digital Electronics
F’s complement of (2BFD)Hex is

 D402
 D403
 E304
 C403

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Digital Electronics
How many input and output required for multiplexer ?

 Many input and one output
 One input and many output
 One input and one output
None of these

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Digital Electronics
The output of a NOR gate is high

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

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Digital Electronics
Minimization of logical expressions while designing digital systems helps in reducing

 space requirements
All of these
 power requirements
 cost

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