Computers use

Binary and hexadecimal number systems are widely used in computer science. Binary numbers can be considered the very basic representation of a number in an electronic device. Binary is also known as base 2 system. It has 2 numerals (0 and 1), and it used to represent the value of bits – the type of information stored in computer’s memory.

They represent the ON state (1) and OFF state (0), many of these ON and OFF states represent a decimal number.