NOT Operator

What Does NOT Operator Mean?

In Boolean algebra, the NOT operator is a Boolean operator that returns TRUE or 1 when the operand is FALSE or 0, and returns FALSE or 0 when the operand is TRUE or 1. Essentially, the operator reverses the logical value associated with the expression on which it operates. The NOT operator is considered one of the basic operators along with AND and OR in Boolean algebra.


The NOT operator is also known as the logical NOT.

Techopedia Explains NOT Operator

In digital electronics, the NOT logical operator allows the user to express conditions in a negative manner. If a condition is true, then the logical NOT operator makes it false, and vice-versa. As with other logical operators, the NOT operator can be combined with other logical operators to create more complex expressions. The NOT operator is used in most programming languages which support logical and comparison operators. In the programming world, it is mainly used to control the flow of the program. It is used in construction of logical statements and in supporting bitwise negation. It is also an important component while setting up logic digital circuits.


Related Terms

Latest Computer Science Terms

Related Reading

Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…