First slide

Logic gates

Question

A digital system comprises a AND gate with a NOT gate on each of its inputs as shown in figure. To which of the following single gates is this system equivalent?

Moderate

A

AND
B

OR
C

NOR
D

NAND

Solution

Truth table for this digital system of logic gates is as stated below
It is obvious from the truth table that this system is equivalent to a single OR gate.

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