Boolean Algebra

Boolean algebra helps us simply and analyze digital logic circuits. It uses binary numbers and hence is sometimes referred to as binary algebra of logical algebra. 

Rules in Boolean Algebra

1. The variable used in boolean algebra can have only two values, 1 for high and 0 for low in binary. 
2. The logical ANDing of variables is represented by adding a dot “.” between them, for example, “A.B”, though sometimes the dot is omitted, such as “AB”.
3. The complement of any variable is represented by putting an overbar on them. 
4. The logical ORing is represented by adding a plus “+” sign between the variables, for example, “A+B”.

Reference

Boolean Algebra