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Digital Electronics

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

 X-OR
 NAND
 AND
 NOR

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Digital Electronics
Digital computers are more widely used as compared to analog computers, because they are

Always more accurate and faster
Less expensive
Useful over wider ranges of problem types
Easier to maintain

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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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Digital Electronics
The voltage levels for negative logic system

 must necessarily be negative
 must necessarily be positive
 may be negative or positive
 must necessarily be 0 V and –5 V

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Digital Electronics
A + Ā is equal to

 A
 0
 Ā
 1

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Digital Electronics
The decimal equivalent of hexadecimal number of 2A0F is

 17607
 10767
 17067
 17670

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