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Which Are Universal Gates?

Marcus Vance • • 7 min read
Which Are Universal Gates?

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

NOR gates
An XNOR gate is made by connecting four NOR gates as shown below. This construction entails a propagation delay three times that of a single NOR gate. , noting from de Morgan's Law that a NOR gate is an inverted-input AND gate. This construction uses five gates instead of four.
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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.

How many universal gates are there?

We have two universal gates – NAND gate and NOR gate. Note: The NAND gate is the abbreviation for Not AND and the NOR gate is the abbreviation for Not OR. In digital circuits we mostly use the NANA and the NOR gate to perform the operation of all the gates because these gates are economical and easier to fabricate.

Are there 5 universal gates?

There are 5 universal gates. Explanation: There are only 2 main universal gates: NAND and NOR. A NAND gate as well as the NOR gate can be used to implement any other Boolean expression thus it is called as a universal gate. ... Explanation: In case of a NAND gate the output is LOW if any one of the inputs is HIGH (i.e. 1).

Marcus Vance
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Marcus Vance

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.