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Digital Electronics

Digital Electronics
In which code do the successive code characters differ in only one position?

 XS-3 code
 Hamming code
 8421 code
 Gray code

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Digital Electronics
What is the difference between xor gate and exor gate.

 xor and exor are complement of each other
 xor gives two outputs while exor gives one
 xor gives one output while exor gives two
 both are same

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

 OR
 AND
 X-OR
 NAND

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Digital Electronics
The parity of the binary number 11011001 is

 even
 odd
 same as the number of zeros
 not known

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Digital Electronics
A small circle or dot on top of an IC represents

 Pin2
 Pin13
 Pin1
 Pin14

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Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 OR
 NAND
 X-OR
 NOR

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