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Digital Electronics

Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 3
 1
 4
 2

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Digital Electronics
A D-flip-flop is said to be transparent when

 the output follows clock
 the output is LOW
 the output is HIGH
 the output follow input

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

 1 V.
 0.01 V.
  1 mV.
 1.1 V.

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Digital Electronics
In flip flop clock is present but in latch clock is

  none.
  may be present/absent.
  present always.
  absent always.

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Digital Electronics
An exclusive NOR gate is logically equivalent to

 X-OR gate followed by an inverter
 NOT gate followed by a NOR gate
 complement of a NOR gate
 inverter followed by an X-OR gate

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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
 NOR
 NAND
 X-NOR

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