Alphanumericals

In this article, we are going to delve into the fascinating world of Alphanumericals, an exciting topic that has captured the attention of people of all ages and backgrounds. Since its emergence, Alphanumericals has aroused lively interest in different areas, whether in the academic, scientific, cultural or social spheres. Throughout history, Alphanumericals has had a significant impact on the way we understand the world around us, and its influence remains relevant today. Through this article, we will explore the various aspects and perspectives related to Alphanumericals, in an attempt to better understand its importance and relevance in our society.
Look up alphanumeric or alphanumerical in Wiktionary, the free dictionary.
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.

Subsets of alphanumeric used in human interfaces

When a string of mixed alphabets and numerals is presented for human interpretation, ambiguities arise. The most obvious is the similarity of the letters I, O and Q to the numbers 1 and 0.[3] Therefore, depending on the application, various subsets of the alphanumeric were adopted to avoid misinterpretation by humans.

In passenger aircraft, aircraft seat maps and seats were designated by row number followed by column letter. For wide bodied jets, the seats can be 10 across, labeled ABC-DEFG-HJK. The letter I is skipped to avoid mistaking it as row number 1. In vehicle identification numbers used by motor vehicle manufacturers, the letters I, O and Q are omitted for their similarity to 1 or 0.

Tiny embossed letters are used to label pins on an V.35/M34 electrical connector. The letters I, O, Q, S, and Z were dropped to ease eye strain with 1, 0, 5, 3, and 2. That subset is named the DEC Alphabet after the company that first used it.

For alphanumerics that are frequently handwritten, in addition to I and O, V is avoided because it looks like U in cursive, and Z for its similarity to 2.

See also

References

  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.
  3. ^ Grissinger, Matthew (December 2012). "Avoiding Confusion With Alphanumeric Characters". Pharmacy and Therapeutics. 37 (12): 663–665. ISSN 1052-1372. PMC 3541865. PMID 23319841.
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