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Digital Electronics

Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

22n
2n
2n-1
2n

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Digital Electronics
The devices commonly used for making digital circuits are

 mechanical switches
 contact switches
 relays
 semiconductor devices

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Digital Electronics
1’s complement of 17 is

  01110.
 10111.
 10001.
 11100.

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Digital Electronics
A binary number system is of base ________

 1
 2
 4
 10

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Digital Electronics
Which of the following gates cannot be used as an inverter?

 X-NOR
 NAND
 AND
 NOR

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Digital Electronics
Which of the following is a digital device

 Resistance of a material
 Regulator of a fan
 Light switch
 Microphone

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