Hexadecimal Number System

Similar  to octal number hexadecimal number system is also used to represent long  binary  numbers in  smaller  form. In microprocessor  we use  hexadecimal  numbers to represent  binary  numbers in smaller length ( on forth  of binary number) not even octal number ( which  have one  third length  of the binary  number). For example  binary  number 101000100110₂ in octal  be written as 5047₈ and in hexadecimal is written as A 27₁₆.

Hexadecimal   number  system  has base of 16 hence requires 16 requires 16 unique symbols. Since  we have 10 unique symbol  in digital number  system (0-9) we use then all in hexadecimal  number systems. But  still  6 more  unique symbol  are required to have total  16 different  symbol. Now  instead of creating new  figures first 6 alphabets ( A, B, C, D, E, and F)  are used in this  number systems.

Important : A, B, C, D, E, and F,  are treated as numbers in hexadecimal number  systems like any  other  number (0-9) and not  as alphabets.