Same chapter3 marksDifficulty: Medium
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3 marksDifficulty: Medium
Draw the truth table of the NAND gate and explain why it is called a universal gate.
Original Khojo Papers practice question — not from a past board paper.
Answer
The NAND output is 0 only when both inputs are 1, and 1 in the other three cases. It is called universal because the NOT, AND and OR gates can all be built from NAND gates alone, so any logic circuit whatever can be made with NAND gates.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The NOR gate is universal in the same way.
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