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Digital Electronics

Digital Electronics
What will be the Boolean expression for an inverter logic gate, where input is A and output is G ?

 A= G
None of these
 G = Ā
 G = A

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

None of these
NOT operation
AND operation
OR operation

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Digital Electronics
X + X.Y = ?

 Y
 0
 X
 1

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Digital Electronics
XNOR followed by a NOT gate is equivalant to ________ gate

 NOR
 XNOR
 OR
 XOR

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +2n-1,-2n-1
 +(2n-1-1),-2n-1
 +2n-1,-(2n-1+1)
 +(2n-1-1),-(2n-1-1)

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Digital Electronics
Which one of the following is 2’s complement of -68?

 01111100
 11000100
 10111100
 00111100

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