This document provides an overview of Boolean algebra and its applications in digital logic circuits. It defines Boolean algebra and its basic operations like AND, OR, and NOT. Boolean algebra represents true as 1 and false as 0 and is used to perform logical operations in digital computers and electronic circuits. The document describes the three basic logic gates - AND, OR, and NOT - and provides their truth tables. It also outlines some fundamental theorems of Boolean algebra like duality, properties of 0 and 1, commutative, associative, distributive, and De Morgan's laws. Finally, it provides some examples of applying these concepts to verify theorems and represent logic expressions as circuits.