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Digital Electronics

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

OR operation
AND operation
NOT operation
None of these

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0110 is subtracted
 0011 is added
 0110 is added
 0011 is subtracted

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Digital Electronics
2-out-of-5 code is

 weighted code
 self-complementing code
 non-weighted code
 alphanumeric code

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Digital Electronics
Most of the digital computers do not have floating point hardware because

It is slower than software
Floating point hardware is costly
Of no specific reason
It is not possible to perform floating point addition by hardware

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Digital Electronics
Which of the following is known as a mod-2 adder?

 X-NOR gate
 NOR gate
 X-OR gate
 NAND gate

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Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NOR gate?

 NAND
 OR
 AND
 X-NOR

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