Identify the function of logic circuit given below

This question was previously asked in
VSSC (ISRO) Technician B: Electronic Mechanic Previous Year Paper (Held on 2 June 2019)
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  1. XNOR
  2. AND
  3. OR
  4. XOR

Answer (Detailed Solution Below)

Option 4 : XOR
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Detailed Solution

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The given circuit is redrawn as:

The Output expression is:

Output = A̅B + AB̅

This is the expression for an XOR gate.

The Truth Table for an XOR gate is as shown:

A

B

Output

0

0

0

0

1

1

1

0

1

1

1

0

XNOR Gate Output: A̅B̅ + AB

AND Gate Output: AB

OR Gate Output: A + B 

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