a numeration system in which a real number is represented by an ordered set of characters where the value of a character depends on its position

- hexadecimal system
- binary number system
- duodecimal number system
- positional representation system
- number representation system
- numeration system
- octal numeration system
- number system
- pure binary numeration system
- decimal system
- binary system
- binary numeration system
- octal number system
- system of numeration
- decimal numeration system
- decimal number system
- sexadecimal number system
- hexadecimal number system
- duodecimal system

of or relating to or determined by position

a technical system of symbols used to represent special things

a comment or instruction (usually added)

the activity of representing something by a special system of marks or characters