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Digital Electronics

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

 6
 10
 9
 12

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Digital Electronics
The state of a flip-flop can be switched by changing its ________ signals.

 input
 clearing
 output
 triggering

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Digital Electronics
The output of a NOR gate is high

 only when all the inputs are high
 only when at least one input is low
 only when at least one input is high
 only when all the inputs are low

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Digital Electronics
How many stable state/states present in flip-flop ?

 2
 1
 4
 3

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Digital Electronics
Which of the following codes is known as the 8421 code?

 Gray code
 ASCII code
 BCD code
 XS-3 code

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Digital Electronics
The XS-3 code is a

 self-complementing code
 weighted code
 cyclic code
 error-correcting code

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