Digital Electronics
The output of a NOR gate is high

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

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Digital Electronics
Statement(A): 2’s complement arithmetic is preferred in digital computers. Statement(R):The Hardware required to obtain the 2’s complement of a number is simple.

 Both A & R are true but R is not the correct explanation of A
 Both A & R are true and R is the correct explanation of A
 A is true but R is false
 A is false but R is true

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