Question:medium

In the combination of the following gates the output Y can be written in terms of inputs A and B as
combination of the following gates the output Y

Updated On: Apr 23, 2026
  • \(\overline{A.B}\)
  • \(\overline{A.B}+A.B\)
  • \(A.\overline{B}+\overline{A}.B\)
  • \(\overline{A+B}\)
Show Solution

The Correct Option is C

Solution and Explanation

The circuit shown in the image consists of logic gates that process the inputs \( A \) and \( B \) to produce the output \( Y \). We need to identify the logical expression for \( Y \) based on the given combination.

  1. Examine the Gates:
    • The circuit involves NOT gates (inverters) which invert the input signals.
    • Two AND gates combine inputs, and an OR gate at the end provides the final output.
  2. Analyze the Inputs for Each Gate:
    • The first inverter negates \( A \), giving \(\overline{A}\).
    • The second inverter negates \( B \), giving \(\overline{B}\).
  3. Operation of AND Gates:
    • The top AND gate receives \( A \) and \(\overline{B}\) and outputs \( A.\overline{B} \).
    • The bottom AND gate receives \(\overline{A}\) and \( B \) and outputs \(\overline{A}.B \).
  4. OR Gate Combination:
    • The OR gate combines the outputs of both AND gates: \( A.\overline{B} + \overline{A}.B \).
  5. Final Output:
    • The expression \( A.\overline{B} + \overline{A}.B \) is known as the XOR operation.
    • Thus, the output \( Y \) can be written in terms of inputs \( A \) and \( B \) as \( A.\overline{B} + \overline{A}.B \).

Therefore, the correct option is A.\overline{B}+\overline{A}.B, corresponding to the XOR logic gate operation.

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