Editing Numerical digit (section)

===Digital values===
Each digit in a number system represents an integer. For example, in [[decimal]] the digit "1" represents the integer [[one]], and in the [[hexadecimal]] system, the letter "A" represents the number [[10 (number)|ten]]. A [[positional number system]] has one unique digit for each integer from [[zero]] up to, but not including, the [[radix]] of the number system.

Thus in the positional decimal system, the numbers 0 to 9 can be expressed using their respective numerals "0" to "9" in the rightmost "units" position. The number 12 is expressed with the numeral "2" in the units position, and with the numeral "1" in the "tens" position, to the left of the "2" while the number 312 is expressed with three numerals: "3" in the "hundreds" position, "1" in the "tens" position, and "2" in the "units" position.