Accusé de réception négatif
Signification du symbole
The Negative Acknowledgement symbol was used in computer terminals, printers, text processing systems, and telecommunication equipment to control data flow and ensure the reliable transmission of information.
It tended to indicate an error in data transmission or a problem with receiving information. In communication protocols, after receiving the NAK symbol, the data sender was required to repeat the previous transmission to correct any errors or data loss. If the data was transmitted correctly, the opposite symbol was sent ( ).
As for modern computer systems and applications, the U+0015 symbol is rarely used there, since other mechanisms and protocols are employed to ensure the reliability of data transmission and error handling.
Like many other control symbols, this one has no visible representation and doesn't occupy a lot of space on screen or in typed text. However, there is a separate symbol in Pictogrammes de commande 2400–243F representing the graphical image of the Negative Acknowledge symbol as the abbreviation NAK — ␕ .
Le symbole «Accusé de réception négatif» est inclus dans le sous-bloc «Contrôles C0‹ du bloc ›Latin de base et a été approuvé dans le cadre de la version Unicode 1.1 en 1993.
Synonymes
NAK.
| Nom Unicode | Negative Acknowledge |
| Numéro Unicode | |
| Plan | 0: Plan multilingue de base |
| Bloc Unicode | Latin de base |
| Sous-bloc Unicode | Contrôles C0 |
| Version Unicode | 1.1 (1993) |
| Raccourci clavier | ^U |
| Type de support de miroir jumelé (bidi) | None |
| Exclusion de composition | No |
| Changement de cas | 0015 |
| Changement de boîtier simple | 0015 |
| scripts | Common |
| Encodage | hex | dec (bytes) | dec | binary |
|---|---|---|---|---|
| UTF-8 | 15 | 21 | 21 | 00010101 |
| UTF-16BE | 00 15 | 0 21 | 21 | 00000000 00010101 |
| UTF-16LE | 15 00 | 21 0 | 5376 | 00010101 00000000 |
| UTF-32BE | 00 00 00 15 | 0 0 0 21 | 21 | 00000000 00000000 00000000 00010101 |
| UTF-32LE | 15 00 00 00 | 21 0 0 0 | 352321536 | 00010101 00000000 00000000 00000000 |
Copiez et collez ces codes pour utiliser le personnage Accusé de réception négatif dans du texte sur des sites web, des réseaux sociaux, des messageries ou des articles de blog.
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