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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.
  8.
  255.
 256.

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Digital Electronics
An EPROM is

 volatile
 erasable but not programmable
 programmable and erasable
 non erasable

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Digital Electronics
What is the minimum number of NOR gates required realizing an X-OR gating?

 4
 5
 6
 3

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Digital Electronics
Which of the following is a digital device

 Light switch
 Regulator of a fan
 Resistance of a material
 Microphone

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Digital Electronics
Which of the following is not a transmission medium?

 Telephone lines.
 Coaxial cables.
  Modem.
 Microwave systems.

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Digital Electronics
The number A = 01110000 and B = 10101111 are in 2’s complement form .Addition of above two number is

 10101111
 11100000
 00011111
 011100001

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