Editing Numerical digit (section)

===Other historical numeral systems using digits===
The exact age of the [[Maya numerals]] is unclear, but it is possible that it is older than the Hindu–Arabic system. The system was [[vigesimal]] (base&nbsp;20), so it has twenty digits. The Mayas used a shell symbol to represent zero. Numerals were written vertically, with the ones place at the bottom. The [[Mayas]] had no equivalent of the modern [[decimal separator]], so their system could not represent fractions.

The [[Thai numerals|Thai numeral system]] is identical to the [[Hindu–Arabic numeral system]] except for the symbols used to represent digits. The use of these digits is less common in [[Thailand]] than it once was, but they are still used alongside Arabic numerals.

The rod numerals, the written forms of [[counting rods]] once used by [[China|Chinese]] and [[Japan]]ese mathematicians, are a decimal positional system able to represent not only zero but also negative numbers. Counting rods themselves predate the Hindu–Arabic numeral system. The [[Chinese numerals#Suzhou numerals|Suzhou numerals]] are variants of rod numerals.

{| class="wikitable" style="text-align:center"
|+ Rod numerals (vertical)
|-
! style="width:50px" | 0
! style="width:50px" | 1
! style="width:50px" | 2
! style="width:50px" | 3
! style="width:50px" | 4
! style="width:50px" | 5
! style="width:50px" | 6
! style="width:50px" | 7
! style="width:50px" | 8
! style="width:50px" | 9
|-
| [[Image:Counting rod 0.png]]
| [[Image:Counting rod v1.png]]
| [[Image:Counting rod v2.png]]
| [[Image:Counting rod v3.png]]
| [[Image:Counting rod v4.png]]
| [[Image:Counting rod v5.png]]
| [[Image:Counting rod v6.png]]
| [[Image:Counting rod v7.png]]
| [[Image:Counting rod v8.png]]
| [[Image:Counting rod v9.png]]
|-
! style="width:50px" | −0
! style="width:50px" | −1
! style="width:50px" | −2
! style="width:50px" | −3
! style="width:50px" | −4
! style="width:50px" | −5
! style="width:50px" | −6
! style="width:50px" | −7
! style="width:50px" | −8
! style="width:50px" | −9
|-
| [[Image:Counting rod -0.png]]
| [[Image:Counting rod v-1.png]]
| [[Image:Counting rod v-2.png]]
| [[Image:Counting rod v-3.png]]
| [[Image:Counting rod v-4.png]]
| [[Image:Counting rod v-5.png]]
| [[Image:Counting rod v-6.png]]
| [[Image:Counting rod v-7.png]]
| [[Image:Counting rod v-8.png]]
| [[Image:Counting rod v-9.png]]
|}