Which of the following is the universal gate?a)OR gateb)AND gatec)NAND gated)NOT gateCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

A universal gate is a gate which can implement any Boolean function without need to use any other gate type. The NAND and NOR gates are universal gates. In practice, this is advantageous since NAND and NOR gates are economical and easier to fabricate and are the basic gates used in all IC digital logic families.

Answer

In degital electronics, a NAND gate (NOT-AND) is a logic gate which produce an output which is false only if all its inputs are true; thus is output is complement to that of an AND gate. A low (0) output results only if all the inputs to the gate are HIGH (1); if any input in low (0), a HIGH (1) output results...

Answer

Yes.. because you can obtain all the other three gates with the NAND gate.

Answer

C because there are two universal gates NAND and NOR

Answer

Understanding Universal Gates
Universal gates are the building blocks of digital circuits, allowing us to construct any logic function using just one type of gate. Among the common logic gates, the NAND gate stands out as the universal gate.
NAND Gate Definition
- The NAND gate is a combination of an AND gate followed by a NOT gate.
- It outputs a false value only when all its inputs are true.
Why is NAND a Universal Gate?
- Constructing Other Gates:
- NAND can be used to create any other logic gate:
- NOT Gate: Connect both inputs of a NAND gate to the same input.
- AND Gate: Connect the output of a NAND gate to a NOT gate (using another NAND).
- OR Gate: Use De Morgan’s theorem with NAND gates to construct an OR gate.
- Flexibility:
- Due to its ability to create any logic function, NAND gates are widely used in integrated circuits and digital electronics.
Comparison with Other Gates
- AND and OR Gates:
- Although AND and OR gates are fundamental, they cannot be used to recreate all logic functions independently without the aid of NOT gates.
- NOT Gate:
- The NOT gate alone cannot perform all logical operations and is not considered universal.
Conclusion
The NAND gate's ability to construct any logic function makes it a universal gate, confirming option 'C' as the correct answer. This property is essential in digital design, allowing for simplified circuit designs and efficient implementations.

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