Boolean logic is a form of algebra that uses binary values, typically represented as true and false. It was developed by mathematician George Boole in the mid-19th century. Boolean logic is fundamental in computer science, as it helps in making decisions based on conditions. It uses operators like AND, OR, and NOT to combine or modify these binary values. In practical applications, Boolean logic is used in programming, search engines, and digital circuit design. For example, a search engine might use Boolean operators to refine search results, allowing users to find information more effectively by combining keywords with AND, OR, or NOT.