Question

Which logic gate is given in the figure?

• A. XOR
• B. NOR
• C. NAND
• D. OR

Hint:

In digital logic, the NAND gate is one of the most important gates as it is functionally complete, meaning any other gate can be constructed using only NAND gates.

Answer 1

The Correct Option is C

Step 1: Understanding the diagram.
The given diagram represents a NAND gate. The NAND gate is the complement of the AND gate, and it produces a false output only when both inputs are true.
Step 2: Analyzing the options.
(1) XOR: This is incorrect. The XOR gate outputs true when the inputs are different.
(2) NOR: This is incorrect. The NOR gate outputs true only when both inputs are false.
(3) NAND: Correct — The NAND gate produces the opposite of an AND gate. It outputs false only when both inputs are true.
(4) OR: This is incorrect. The OR gate outputs true if at least one input is true.
Step 3: Conclusion.
The correct answer is (3) NAND, as it correctly describes the logic gate in the diagram.