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Digital Electronics

Digital Electronics
To get an excess-3 code from BCD code

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

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Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 1000
 0011
 1100
 1001

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Digital Electronics
An EPROM is

 non erasable
 programmable and erasable
 erasable but not programmable
 volatile

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Digital Electronics
What is the 2’s complement of 10110000?

 10110000
 01001111
 10001110
 01010000

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Digital Electronics
The most suitable gate for comparing two bits is

 NAND
 AND
 X-OR
 OR

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Digital Electronics
XNOR followed by a NOT gate is equivalant to ________ gate

 XOR
 NOR
 XNOR
 OR

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