Alphanumericals

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Alphanumericals" – news · newspapers · books · scholar · JSTOR (May 2012) (Learn how and when to remove this message) This article may be confusing or unclear to readers. Please help clarify the article. There might be a discussion about this on the talk page. (October 2023) (Learn how and when to remove this message) (Learn how and when to remove this message)

Look up alphanumeric or alphanumerical in Wiktionary, the free dictionary.

Alphanumericals or alphanumeric characters are any collection of number characters and letters in a certain language. Sometimes such characters may be mistaken one for the other.

Merriam-Webster suggests that the term "alphanumeric" may often additionally refer to other symbols, such as punctuation and mathematical symbols.^[1]

In the POSIX/C^[2] locale, there are either 36 (A–Z and 0–9, case insensitive) or 62 (A–Z, a–z and 0–9, case-sensitive) alphanumeric characters.