The 4 (four) number system refers to the quaternary number system, also known as base-4 or tetradecimal system. It is a numerical system that uses four digits – 0, 1, 2, and 3, to represent all numbers. Similar to the decimal system (base-10), where each digit's value is determined by its position, in the quaternary system, each digit's value is determined by its position multiplied by the base (4). The quaternary system is primarily used in computer science and digital electronics calculations.
