Logic gates are basic electronic circuits that perform Boolean operations and form the building blocks of digital circuits and systems. NAND and NOR gates are considered universal gates as any Boolean function can be implemented using only NAND or NOR gates by connecting their inputs and outputs in a specific configuration. The document provides examples of how NAND and NOR gates can be used to implement other logic gates like AND, OR and NOT through their input-output behavior and transistor-level implementations.

1. LOGIC GATES
Mr.A.Rameshbabu AP/ECE
Ramco Institute of Technology
Academic Year 2017 – 2018 (Odd)

2. Logic Gates

4. Universal Gates
 NAND and NOR gates are called as Universal
gates.
 Because we can use NAND and NOR gates to
implement any Boolean functions.

5. NAND gate implementation

6. NOR gate implementation

7. NAND & NOR

8. MULTI LEVEL GATE IMPLEMENTATION