binaire

Binaire is a term used in several disciplines to denote a relation to two or a system based on two elements. In everyday usage, it most often refers to the binary or base-2 numeral system used in computing, as well as to two-valued logic and two-part structures. The word comes from Latin binarius, meaning "consisting of two."

In mathematics and logic, binaire describes objects that involve two operands or arguments. A binary operation takes two inputs and outputs a result, such as addition; a binary relation links pairs of elements; a binary function has two inputs.

In computing, binary refers to the base-2 numeral system that underpins digital hardware. All data are represented by sequences of bits, each bit being 0 or 1. Through combinations of binary digits, computers perform calculations, store information, and execute instructions. Hardware implements binary logic with gates such as AND, OR, and NOT. A byte consists of eight bits.

In astronomy, a binary star system comprises two stars bound by gravity and orbiting a common center of mass. Binary configurations are common in the universe, and some exoplanet systems accompany binary stars.

In music, binary form is a two-part structure in which material is presented in two distinct sections, often labeled A and B, sometimes repeated.