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Digital Electronics

Digital Electronics
The NAND gate is AND gate followed by ___________.

NOT gate
None of these
OR gate
AND gate

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

22n
2n
2n
2n-1

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Digital Electronics
A Nibble is equal to ________ bit(s)

 4
 8
 2
 1

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Digital Electronics
Which of the following operations is commutative but not associative?

 OR
 X-OR
 NAND
 AND

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Digital Electronics
A byte is equal to ________ bits.

 32
 4
 16
 8

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 an AND or a NOR
 a NAND or an X-OR
 an OR or an X-NOR
 an OR or an X-OR

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