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Answer the following from the logic gate diagram.
Answer the following questions related to the below image: What is the output of the above gate if…
Answer the following questions related to the below image:
(a)[1.0]
What is the output of the above gate if input $A = 0$, $B = 1$?
(b)[1.0]
What are the values of the inputs if output = 1?
Answer
Answer (a)
Official answer keyThe gate shown is a NOR gate. Output = $(A+B)' = (0+1)' = 1' = 0$.
Answer (b)
Official answer keyThe gate shown is a NOR gate, whose output is 1 only when all of its inputs are 0. So the output is 1 when A = 0 and B = 0.
From ISC 2025 Specimen Computer Science Paper 1, question 5(iii).