Alphanumeric
An alphanumeric code is one made only of letters and numbers.
An alphanumeric code is one made only of letters and numbers.
_-_Ystad-2020.jpg)
However, humans can make mistakes, so the code is used so as to cut out common mistakes. Letters and numbers can be misread. The letters I, O and Q are similar to the numbers 1 and 0.[1]
- In passenger aircraft seats are labelled 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 the identification number used by motor vehicle manufacturers, the letters I, O and Q are left out. They are too similar 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 is called 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 may look like U when written; and Z for its similarity to 2.
Merriam-Webster dictionary suggests that the term "alphanumeric" may often additionally refer to other symbols, such as punctuation and mathematical symbols.[2] This opens up a whole range of other possibilities, and a whole range of other confusions. It is not the usual way the term 'alphanumeric' is used. The Shorter Oxford English Dictionary defines the term as given above in our first line (though not quite in the same words).
Lastly, it is usual for alphanumeric codes to be "case insensitive", which means it does not matter whether you write them in upper case (capital letters) or lower case (small letters).
References
- ↑ Slashed zero is a way of making the zero more distinct. Of course, that takes us beyond the basic alphanumeric typewriter symbols.
- ↑ Merriam-Webster dictionary
Content Disclaimer
Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.
- The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
- There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
- It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
- Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
- Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.