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Digital Electronics

Digital Electronics
The number of rows in the truth table of a 4-input gate is

 16
 8
 12
 4

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Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 1 and 4
 0 and 4
 0 and 3
 1 and 3

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

 triggering
 input
 output
 clearing

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Digital Electronics
A gate is disabled when its disable input is at logic 0. The gate is

 NOR
 AND
 none of these
 OR

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Digital Electronics
The main equation for a D flip flop is

 Q=D
 Q=1
 Q=D'
 Q=0

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

None of these
 Output is inverted
 Open collector output
 Tristate

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