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Boolean type, also known as Boolean data type or logical data type, is a data type in computer science that has only two possible values: true and false. It is named after George Boole, a 19th-century mathematician who founded the field of boolean algebra. Boolean types are fundamental in programming and are used to represent truth values, conditions, and logical operations.

In most programming languages, boolean types are implemented using a single bit, with true typically represented by 1 and false by 0. However, the exact representation can vary depending on the language and its underlying hardware architecture.

Boolean types are used extensively in control structures such as if statements, loops, and conditional expressions. They are also used in logical operations like AND, OR, and NOT, which are essential for constructing complex logical conditions.

Boolean types are not to be confused with boolean algebra, which is a branch of algebra that deals with logical operations and expressions. While boolean algebra provides the theoretical foundation for boolean types, boolean types are a practical implementation of these concepts in programming languages.

In summary, boolean types are a simple yet powerful data type used to represent truth values and logical conditions in programming. They are named after George Boole and are fundamental to the control structures and logical operations in most programming languages.