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Digital Electronics

Digital Electronics
Odd parity of a bit stream can be tested using ________ gate.

 AND
 OR
 XOR
 NOR

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Digital Electronics
In the boolean algebra, a variable has ________ different state(s)/value(s).

 3
 1
 2
 4

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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
The NOR gate can function as a NOT gate if

 one input is set to 1
 all inputs are connected together
 inputs are left open
 one input is set to 0

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

OR gate
NOT gate
None of these
AND gate

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Digital Electronics
Which of the following is a self-complementing code?

 cyclic code
 Hamming code
 Gray code
 XS-3 code

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