BASIC LAWS OF BOOLEAN ALGEBRA
Logical operation can be expressed and minimized mathematically using the rules, laws, and theorems of Boolean algebra. It is a convenient and systematic method of expressing and analyzing the operation of digital circuit and system. Boolean algebra used binary arithmetic variables which have two distinct symbols 0 and 1. These are called levels or states of logic. For example, a binary 1 represents a High level and a binary 0 represent a Low level.