Question

Identify the logic operation performed by the given circuit.

• A. NAND
• B. NOR
• C. OR
• D. AND

Answer 1

The Correct Option is C

The circuit comprises two NOT gates and one OR gate. Analysis of the circuit's logic operation proceeds as follows:

Each input, A and B, is processed by a NOT gate, which inverts the input signal.

• Input A inverted yields 1 if A = 0, and 0 if A = 1.
• Input B inverted yields 1 if B = 0, and 0 if B = 1.

The inverted outputs from the NOT gates serve as inputs to an OR gate. An OR gate outputs 1 if any of its inputs are 1.

• When the inverted inputs are (0, 0), the OR gate output is 0.
• When the inverted inputs are (0, 1), (1, 0), or (1, 1), the OR gate output is 1.

In summary, the circuit implements an OR operation on the inverted inputs. Consequently, the overall circuit performs an OR operation.

Thus, the logical operation is OR.