The document covers the fundamentals of digital logic design, focusing on logic gates as essential components for creating digital circuits. It details various types of gates, including NOT, AND, OR, NAND, NOR, XOR, and XNOR, and discusses their representations through symbols, truth tables, and Boolean notation. Additionally, it highlights the significance of NAND and NOR gates as universal gates and their related properties.

1. Digital Logic Design
CSE-2215
LEC 03

2. Logic Gates
● The building blocks used to create digital circuits are logic gates
● Combination of transistors that performs binary logic
● There are three elementary logic gates and a range of other simple
gates
● Each gate has its own logic symbol which allows complex functions to
be represented by a logic diagram
● The function of each gate can be represented by a truth table or using
Boolean notation.

3. • Types of gates
– NOT
– AND
– OR
– NAND
– NOR
– X-OR
– X-NOR
– BUFFER GATE
Basic Gate
Universal Gate
Arithmetic Gate
(Special)

4. Digital Logic Gates (Symbols, Function and Truth Table)

5. Digital Logic Gates (Symbols, Function and Truth Table)

6. For these following topics follow class Lectures
● Why NAND/NOR gate called universal gate?
● NAND/NOR gate Basic Gate conversion
● NAND/NOR gate Arithmetic Gate conversation
● Properties of XOR/XNOR gate.
“Follow Class
Lectures”