Alphanumericals

A black-headed gull ringed with an alphanumeric plastic ring that makes it easier to read from a distance.

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.

  1. ^ "Alphanumeric". Merriam-Webster dictionary. Merriam-Webster. Retrieved 9 May 2020.
  2. ^ Christias, Panagiotis (1 April 2004). "man ASCII(7), "American Standard Code for Information Interchange"". UNIXhelp. University of Edinburgh. Archived from the original on 11 May 2013. Retrieved 7 May 2013.