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Digital Electronics

Digital Electronics
The output of a gate is LOW if and only if all its inputs are HIGH. It is true for

 AND
 X-NOR
 NOR
 NAND

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Digital Electronics
The set of which logic gates is designated as universal gate?

  NOR , NAND.
 XNOR, NOR, NAND.
 NOT, OR , AND.
 XNOR, NOR, NAND.

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Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 6
 10
 12
 9

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

None of these
AND operation
OR operation
NOT operation

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

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

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Digital Electronics
In binary number system the first digit (bit) from right to left is called as

 First Bit
 Last Bit
 MSB, Most Significant Bit
 LSB, Least Significant Bit

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