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Digital Electronics

Digital Electronics
What logic function is produced by adding an inverter to each input and output of an OR gate?

 NAND
 NOR
 X-OR
 AND

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Digital Electronics
A + Ā is equal to

 Ā
 A
 0
 1

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

 0011
 1100
 1001
 1000

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Digital Electronics
When will be the output of a NOT gate is LOW ?

 the input is LOW.
 the input is HIGH.
None of these
 the input is HIGH and LOW.

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Digital Electronics
How many input and output required for demultiplexer ?

 number of selection inputs and one output
 one input and many output
None of these
 one input and one output

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 1, K = 0.
 J = 0, K = 0.
 J = 1, K = 1.
 J = 0, K = 1.

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