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Digital Electronics

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

 16.
  255.
  8.
 256.

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Digital Electronics
The switch which clears a flip-flop is know as

 Reset
 None
 Both A and B
 Clear

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Digital Electronics
A NAND gate is called a universal logic element because

Many digital computers use NAND gates.
Any logic function can be realized by NAND gates alone
All the minization techniques are applicable for optimum NAND gate realization
It is used by everybody

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Digital Electronics
The output of a gate is LOW when at least one of its inputs is HIGH. This is true for

 OR
 NAND
 AND
 NOR

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Digital Electronics
The devices commonly used for making digital circuits are

 contact switches
 relays
 mechanical switches
 semiconductor devices

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

 D402
 E304
 C403
 D403

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