- A logical or Boolean operation on N-state variables is one that yields a single N-state variable;
e.g., a comparison on the 3-state variables A and B,
each represented by -, 0, or +, which yields: - when A is less
than B, 0 when A equals B, and + when A is greater than B. Specifically, operations such as AND, OR,
and NOT on two state variables which occur in the algebra of logic;
i.e. Boolean algebra.
- Logical operations are the operations of logical shifting, masking, and other non-arithmetical
operations of a computer.
ARTIFICIAL INTELLIGENCE, AND CYBERNETICS
Source: Van Nostrand's Scientific Encyclopedia, Fifth