Question

Given: A=1, B=1, C=1 for a 3-input NOR gate, what is the output value?

Answer 1

Answer:

  0

Explanation:

A NOR gate gives you the inverted output of an OR function. In numerical terms, the OR function gives you the maximum of the inputs:

  A+B+C = max(A, B, C) = max(1, 1, 1) = 1

Then the output of the NOR function is its inverse:

  (A+B+C)' = (1 -max(A, B, C)) = 1 -1 = 0

The output value is 0.