Numerical digit

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In mathematics and computer science, a numerical digit is a symbol, e.g. 3, used in numerals (combinations of symbols), e.g. 37, to represent numbers (integers or real numbers) in positional numeral systems. The name "digit" comes from the fact that the 10 digits of the hands (the fingers and thumbs) correspond to the 10 symbols of the common base 10 number system, i.e. the decimal digits.

Examples of digits include any one of the decimal characters "0" through "9", either of the binary characters "0" or "1", and the digits "0"..."9","A",...,"F" used in the hexadecimal system. In a given number system, if the base (radix) is an integer, the number of needed digits, including zero, is always equal to the absolute value of the base.

(Source: Federal Standard 1037C)bg:Цифра be:Лічбы cs:Číslice da:Ciffer de:Ziffer es:Cifra eo:Cifero fr:Chiffre ko:숫자 is:Tölustafur he:ספרה nl:Cijfer ja:数字 lt:Skaitmuo pl:Cyfra pt:algarismo ro:Cifră ru:Цифры sl:Števka fi:Numero sv:Siffra wa:Chife zh:数字