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Digital Electronics

Digital Electronics
What logic function is produced by adding an inverter to each input and output of an AND gate?

 X-OR
 OR
 NOR
 NAND

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

 1
 2
 3
 4

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

 X-OR
 AND
 NAND
 OR

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Digital Electronics
The number of rows in the truth table of a 4-input gate is

 4
 8
 16
 12

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Digital Electronics
Why encoder is used in the digital electronics ?

None of these
 It is used to separate address bus and data bus
 To convert non coded information into coded form
 To convert coded information into non coded form

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Digital Electronics
Which of the following gate is a two-level logic gate

OR gate
NAND gate
NOT gate
EXCLUSIVE OR gate

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