Universal gates. Implement EX-or gate using NAND gate.
1 Answer

Ex-OR Function Realisation using NAND gates


Exclusive-OR Gates is used mainly to build circuits that perform arithmetic operations and calculations especially Adders and Half-Adders as they can provide a “carry-bit” function or as a controlled inverter, where one input passes the binary data and the other input is supplied with a control signal.

Commonly available digital logic Exclusive-OR gate IC’s include:

TTL Logic Ex-OR Gates

  • 74LS86 Quad 2-input

CMOS Logic Ex-OR Gates

  • CD4030 Quad 2-input

7486 Quad 2-input Exclusive-OR Gate


The Exclusive-OR logic function is a very useful circuit that can be used in many different types of computational circuits. Although not a basic logic gate in its own right, its usefulness and versatile have turned it into a standard logical function complete with its own Boolean expression, operator and symbol.

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