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Digital Electronics

Digital Electronics
A switch-tail ring counter is made by using a single D-FF, the following circuit is

  T FF.
  D FF.
  S-R FF.
  J-K FF.

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Digital Electronics
An 8 × 4 ROM contains a decoder of size

 8 × 8
 3 × 8
 8 × 4
 3 × 4

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Digital Electronics
The output of a gate is LOW if and only if all its inputs are HIGH. It is true for

 AND
 X-NOR
 NOR
 NAND

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Digital Electronics
The number of digit 1 present in the binary representation of (3 × 512 + 7 × 64 + 5 × 8 + 3) is

 9
 7
 6
 8

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Digital Electronics
A single flip-flop can be cleared (reset) to

 0
 Both A and B
 1
 None

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Digital Electronics
In which code do the successive code characters differ in only one position?

 8421 code
 Hamming code
 Gray code
 XS-3 code

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