Rules of Boolean algebra

Just as we required two basic mathematical operation i.e Addition and subtraction for the mathematical manipulation of ordinary quantities which can possess all continuous value, we require a special algebra known as Boolean algebra for the manipulation of the quantities which have values 0 and 1 and are known as Boolean variables. A unique character of Boolean algebra is that variables used in it can assume only one of the two values i.e. either 0 or 1. Rules Boolean algebra is based on three basic operation namely AND operation, OR operation and NOT operation.