Binary forms the foundation of digital computing, allowing computers to process and store information using electrical signals that represent two distinct states.
Binary is a base-2 numbering system, as opposed to the familiar base-10 system (decimal) that uses digits from 0 to 9. In binary, each digit or bit represents powers of 2, where each position in a binary number holds a value of either 0 or 1. In a computer, it is a switch that is on or off.