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Digital Electronics

Digital Electronics
Switching circuits are

 hybrid circuits
 analog circuits
 none of these
 digital circuits

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Digital Electronics
An AND gate can be imagined as

 transistors connected in paralle
 transistors connected in series
 switches connected in parallel
 switches connected in series

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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
What is the requirement of fullsubstractor circuit ?

 Three inputs and two outputs
 Two inputs and three outputs
 Two inputs and two outputs
 Three inputs and one output

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Digital Electronics
"What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease"

A & D
A & B
B & C
C & D

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Digital Electronics
The number of comparators in a parallel conversion type 8-bit analog to digital converter is

 256.
  8.
  255.
 16.

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