Code erreurs SMTP


INTERNET

Les codes

d’erreurs SMTP

    

Les codes d'erreur SMTP



Ces codes sont génés par le serveur SMTP lors du traitement des messages électroniques.
Vous pouvez trouver ses codes lors de réception de message d'erreur par exemple et cette liste vous permettra de comprendre purquoi votre message n'est pas arrivé au destinataire..

Code Description
421
Service non disponible, canal en fermeture (Domain service not available, closing transmission channel)
432
A password transition is needed.
450
Action non effectuée : boîte-aux-lettres non disponible [Ex., bloquée par un autre utilisateur] (Requested mail action not taken: mailbox unavailable.)
451
Action arrêtée : erreur de traitement (Requested action aborted: local error in processing)
452
Action non effectuée : manque de ressources système (Requested action not taken: insufficient system storage)
454
TLS not available due to temporary reason.
Encryption required for requested authentication mechanism.
458
Unable to queue messages for node node.
459
Node node not allowed: reason.
500
Erreur de syntaxe, commande non reconnue (Command not recognized: command. Syntax error)
501
Erreur de syntaxe dans des paramètres ou arguments (Syntax error, no parameters allowed)
502
Commande non implémentée (Command not implemented)
503
Mauvaise séquence de commandes (Bad sequence of commands)
504
Paramètre de commande non implémenté (Command parameter not implemented)
521
Machine does not accept mail.
530
Must issue a STARTTLS command first.
Encryption required for requested authentication mechanism.
534
Authentication mechanism is too weak.
538
Encryption required for requested authentication mechanism.
550
Action non effectuée : boîte-aux-lettres non disponible, non trouvée, pas d'accès (Requested action not taken: mailbox unavailable)
551
Utilisateur non local. essayer forwardpath (User not local; please try forwardpath)
552
Action arrêtée : manque de ressources de stockage (Requested mail action aborted: exceeded storage allocation)
553
Action non effectuée : nom de boîte-aux-lettres non autorisé (Requested action not taken: mailbox name not allowed)
554
Transaction échouée. (Transaction failed)



Les codes d'erreur ESMTP

Le protocole SMTP est limité dans les codes d'erreurs délivrés. Le protocole ESMTP est un système plus complet de gestion codes d'erreur. La syntaxe des codes est constituée de 3 chiffres qui sont respectivement : classe, subect et détail.

Avec :
  • classe = "2", "4" ou "5",
    • 2 signifie succès (Success) : l'opération s'est déroulée sans heurt.
    • 4 indique une erreur temporaire (Persistent Transient Failure) : Attendez un peu avant de renvoyer le message.
    • 5 signale une erreur permanente (Permanent Failure) : Si vous avez un autre moyen de contacter le destinataire......
  • subject = nombre de 0 à 9
  • detail = nombre de 0 à 9
Les deuxième (subject) et troisième (detail) parties donnent des indications supplémentaires
  • X.0.X Other or Undefined Status There is no additional subject information available. >X.0.0 Other undefined Status Other undefined status is the only undefined error code. It should be used for all errors for which only the class of the error is known.
  • X.1.X Addressing Status The address status reports on the originator or destination address. It may include address syntax or validity. These errors can generally be corrected by the sender and retried.
  • X.1.0 Other address status Something about the address specified in the message caused this DSN.
  • 5.1.1 Bad destination mailbox address L'adresse spécifiée n'existe pas : la partie de gauche de l'adresse e-mail (avant le @) est fausse.
  • X.1.2 Bad destination system address The destination system specified in the address does not exist or is incapable of accepting mail. For Internet mail names, this means the address portion to the right of the "@" is invalid for mail. This codes is only useful for permanent failures.
  • X.1.3 Bad destination mailbox address syntax The destination address was syntactically invalid. This can apply to any field in the address. This code is only useful for permanent failures.
  • X.1.4 Destination mailbox address ambiguous The mailbox address as specified matches one or more recipients on the destination system. This may result if a heuristic address mapping algorithm is used to map the specified address to a local mailbox name.
  • X.1.5 Destination address valid This mailbox address as specified was valid. This status code should be used for positive delivery reports.
  • X.1.6 Destination mailbox has moved, No forwarding address The mailbox address provided was at one time valid, but mail is no longer being accepted for that address. This code is only useful for permanent failures.
  • X.1.7 Bad sender's mailbox address syntax The sender's address was syntactically invalid. This can apply to any field in the address.
  • X.1.8 Bad sender's system address The sender's system specified in the address does not exist or is incapable of accepting return mail. For domain names, this means the address portion to the right of the "@" is invalid for mail.
  • X.2.X Mailbox Status Mailbox status indicates that something having to do with the mailbox has cause this DSN. Mailbox issues are assumed to be under the general control of the recipient.
  • X.2.0 Other or undefined mailbox status The mailbox exists, but something about the destination
    mailbox has caused the sending of this DSN.
  • X.2.1 Mailbox disabled, not accepting messages The mailbox exists, but is not accepting messages. This may be a permanent error if the mailbox will never be re-enabled or a transient error if the mailbox is only temporarily disabled.
  • 5.2.2 Boîte aux lettres saturée (Mailbox full) La boîte aux lettres du destinataire est saturée : son propriétaire a depassé le quota de courrier admis. Seule solution : attendre que votre correspondant vide sa boîte.
  • X.2.3 Message length exceeds administrative limit A per-mailbox administrative message length limit has been exceeded. This status code should be used when the per-mailbox message length limit is less than the general system limit. This code should be used as a permanent failure.
  • X.2.4 Mailing list expansion problem The mailbox is a mailing list address and the mailing list was unable to be expanded. This code may represent a permanent failure or a persistent transient failure.
  • X.3.X Mail System Status Mail system status indicates that something having to do with the destination system has caused this DSN. System issues are assumed to be under the general control of the destination system administrator.
  • X.3.0 Other or undefined mail system status The destination system exists and normally accepts mail, but something about the system has caused the generation of this DSN.
  • X.3.1 Mail system full Mail system storage has been exceeded. The general semantics imply that the individual recipient may not be able to delete material to make room for additional messages. This is useful only as a persistent transient error.
  • X.3.2 System not accepting network messages The host on which the mailbox is resident is not accepting messages. Examples of such conditions include an immanent shutdown, excessive load, or system maintenance. This is useful for both permanent and permanent transient errors.
  • X.3.3 System not capable of selected features Selected features specified for the message are not supported by the destination system. This can occur in gateways when features from one domain cannot be mapped onto the supported feature in another.
  • X.3.4 Message too big for system The message is larger than per-message size limit. This limit may either be for physical or administrative reasons. This is useful only as a permanent error.
  • X.3.5 System incorrectly configured The system is not configured in a manner which will permit it to accept this message.
  • X.4.X Network and Routing Status The networking or routing codes report status about the delivery system itself. These system components include any necessary infrastructure such as directory and routing services. Network issues are assumed to be under the control of the destination or intermediate system administrator.
  • X.4.0 Other or undefined network or routing status Something went wrong with the networking, but it is not clear what the problem is, or the problem cannot be well expressed with any of the other provided detail codes.
  • >X.4.1 No answer from host The outbound connection attempt was not answered, either because the remote system was busy, or otherwise unable to take a call. This is useful only as a persistent transient error.
  • X.4.2 Bad connection The outbound connection was established, but was otherwise unable to complete the message transaction, either because of time-out, or inadequate connection quality. This is useful only as a persistent transient error.
  • X.4.3 Directory server failure ou routing server failure (erreur de routage)
    Le message n’a pas été envoyé car le serveur n’a pas réussi à atteindre le serveur de messagerie de vos destinataires (indiqué dans l’adresse, après le @).
  • X.4.4 Unable to route The mail system was unable to determine the next hop for the message because the necessary routing information was unavailable from the directory server. This is useful for both permanent and persistent transient errors.
    A DNS lookup returning only an SOA (Start of Administration) record for a domain name is one example of the unable to route error.
  • 4.4.5 Mail system congestion The mail system was unable to deliver the message because the mail system was congested.
  • 4.4.6 Routing loop detected A routing loop caused the message to be forwarded too many times, either because of incorrect routing tables or a user forwarding loop.
  • 4.4.7 Delivery time expired Le délai d'acheminement de votre message a été jugé trop long. Votre message n'a donc pas été délivré. Cette erreur est temporaire : envoyez à nouveau votre message.
    The message was considered too old by the rejecting system, either because it remained on that host too long or because the time-to-live value specified by the sender of the message was exceeded. If possible, the code for the actual problem found when delivery was attempted should be returned rather than this code.
  • X.5.X Mail Delivery Protocol Status The mail delivery protocol status codes report failures involving the message delivery protocol. These failures include the full range of problems resulting from implementation errors or an unreliable connection. Mail delivery protocol issues may be controlled by many parties including the originating system, destination system, or intermediate system administrators.
  • X.5.0 Other or undefined protocol status Something was wrong with the protocol necessary to deliver the message to the next hop and the problem cannot be well expressed with any of the other provided detail codes.
  • 5.5.1 Invalid command (commande invalide) A mail transaction protocol command was issued which was either out of sequence or unsupported.
  • 5.5.2 Syntax error A mail transaction protocol command was issued which could not be interpreted, either because the syntax was wrong or the command is unrecognized.
  • X.5.3 Too many recipients More recipients were specified for the message than could have been delivered by the protocol. This error should normally result in the segmentation of the message into two, the remainder of the recipients to be delivered on a subsequent delivery attempt. It is included in this list in the event that such segmentation is not possible.
  • 5.5.4 Invalid command arguments A valid mail transaction protocol command was issued with invalid arguments, either because the arguments were out of range or represented unrecognized features.
  • X.5.5 Wrong protocol version A protocol version mis-match existed which could not be automatically resolved by the communicating parties.
  • X.6.X Message Content or Media Status The message content or media status codes report failures involving the content of the message. These codes report failures due to translation, transcoding, or otherwise unsupported message media. Message content or media issues are under the control of both the sender and the receiver, both of whom must support a common set of supported content-types.
  • X.6.0 Other or undefined media error Something about the content of a message caused it to be considered undeliverable and the problem cannot be well expressed with any of the other provided detail codes.
  • X.6.1 Media not supported The media of the message is not supported by either the delivery protocol or the next system in the forwarding path.
  • X.6.2 Conversion required and prohibited The content of the message must be converted before it can be delivered and such conversion is not permitted. Such prohibitions may be the expression of the sender in the message itself or the policy of the sending host.
  • X.6.3 Conversion required but not supported The message content must be converted to be forwarded but such conversion is not possible or is not practical by a host in the forwarding path. This condition may result when an ESMTP gateway supports 8bit transport but is not able to downgrade the message to 7 bit as required for the next hop.
  • X.6.4 Conversion with loss performed This is a warning sent to the sender when message delivery was successfully but when the delivery required a conversion in which some data was lost. This may also be a permanant error if the sender has indicated that conversion with loss is prohibited for the message.
  • X.6.5 Conversion Failed A conversion was required but was unsuccessful. This may be useful as a permanent or persistent temporary notification.
  • X.7.X Security or Policy Status The security or policy status codes report failures involving policies such as per-recipient or per-host filtering and cryptographic operations. Security and policy status issues are assumed to be under the control of either or both the sender and recipient. Both the sender and recipient must permit the exchange of messages and arrange the exchange of necessary keys and certificates for cryptographic operations.
  • X.7.0 Other or undefined security status Something related to security caused the message to be returned, and the problem cannot be well expressed with any of the other provided detail codes. This status code may also be used when the condition cannot be further described because of security policies in force.
  • X.7.1 Delivery not authorized, message refused The sender is not authorized to send to the destination. This can be the result of per-host or per-recipient filtering. This memo does not discuss the merits of any such filtering, but provides a mechanism to report such.
  • X.7.2 Mailing list expansion prohibited The sender is not authorized to send a message to the intended mailing list.
  • X.7.3 Security conversion required but not possible A conversion from one secure messaging protocol to another was required for delivery and such conversion was not possible. This is useful only as a permanent error.
  • X.7.4 Security features not supported A message contained security features such as secure authentication which could not be supported on the delivery protocol. This is useful only as a permanent error.
  • X.7.5 Cryptographic failure A transport system otherwise authorized to validate or decrypt a message in transport was unable to do so because necessary information such as key was not available or such information was invalid.
  • X.7.6 Cryptographic algorithm not supported A transport system otherwise authorized to validate or decrypt a message was unable to do so because the necessary algorithm was not supported.
  • X.7.7 Message integrity failure Votre message n'a pu être validé parce qu'il a été corrompu ou alteré en cours de route.
    A transport system otherwise authorized to validate a message was unable to do so because the message was corrupted or altered.


     

Langage informatique

INTERNET

Les langages informatiques

   

Principaux langages informatiques



Language
Origine
Création
Commentaires
ADA
Augusta ADA Byron (Lady Lovelace)
1979
Dérivé du Pascal, développé par le Département de la Défense américain.
ALGOL
ALGOrithmic Language
1960
Précurseur des languages structurés comme le C ou le PASCAL.
APL
A Programming Language
1961
Langage interprété ayant une syntaxe concise et utilisant la symbolique.
BASIC
Beginners All-Purpose Symbolic Instruction Code
1965
Langage de programmation interprété, d'abord simple ayant fortement participé à la démocratisation de l'informatique.
C
C'est une version améliorée du langage de programmation B de Bell Laboratory
1972
Langage de programmation structuré et compilé. Sa forte portabilité à grandement facilité son utilisation.
COBOL
COmmon Business-Oriented Language
1959
Langage de programmation proche de l'anglais employé essentiellement pour des application de gestion.
FORTH
FOuRTH generation language
1970
Langage structuré et interprété avec la possibiltié de développé ses propre fonctions.
FORTRAN
FORmula TRANslation
1954
D'un abord rude, mais permettant le développement d'applciation scientifique de part ses possibilités de manipulation de variable et de pilotage d'outil externe servant à acqurir des informations en "temps réel".
LISP
LISt Processing
1960
Langage de programmation interprété permettant la manipulation de liste de données. L'intelligence artificielle lui a donné ses lettres de noblesse.
Pascal
Blaise PASCAL, mathématicien et inventeur de la première machine à calculer
1971
Langage structuré et compilé. Comme le langage C, il est devenu un langage de développement standard pour les micro-ordinateurs.
PHP
Hypertext Preprocesseur. Conçu par Rasmus Lerdorf
1994
Langage de programmation interprété en OPEN SOURCE servant aux développements de site Internet intéractif.
PL/1
Programming Language One
1964
Langage de programmation complexe. Il a été fortement utilisé dans les universités centres de recherche à connotation scientifique.
PROLOG
PROgramming in LOGic
1972
Langage de programmation utilisé en intelligence artificielle. Sa force provient de sa capacité à manipuler des ralations logiques.
  

Le code UNICODE

INTERNET

Le code UNICODE

   

Mémo UNICODE



Caractères en code ISO 5589-1 , ainsi que leur abréviation ENTITY HTML.
Utiliser le code ENTITY dans l'encodage de vos pages Web, en lieu et place du caractères à afficher.

Caractère
Code ISO
ENTITY
Caractère
Code ISO
ENTITY
Caractère
Code ISO
ENTITY
 
 
 «
«
«
 Õ
Õ
Õ
 ‚
 
 ¬
¬
¬
 Ö
Ö
Ö
 ƒ
ƒ
 
 ­
­
­
 ´
×
×
 „
 
 ®
®
®
 Ø
Ø
Ø
 …
 
 ¯
¯
&masr;
 Ù
Ù
Ù
 †
 
 °
°
°
 Ú
Ú
Ú
 ‡
 
 ±
±
±
 Û
Û
Û
 ˆ
ˆ
 
 ²
²
²
 Ü
Ü
Ü
 ‰
 
 ³
³
³
 Ý
Ý
Ý
 Š
Š
 
 ´
´
´
 Þ
Þ
Þ
 ‹
 
 m
µ
µ
 ß
ß
ß
 Œ
Œ
 
 ¶
 à
à
&agrace;
 
 
 ·
·
·
 á
á
á
 
Ž
 
 ¸
¸
¸
 â
â
â
 
 
 1
¹
¹
 ã
ã
ã
 
 
 º
º
º
 ä
ä
ä
 ‘
'
 
 »
»
»
 å
å
å
 ’
'
 
 ¼
¼
¼
 æ
æ
æ
  “
"
 
 ½
½
½
 ç
ç
ç
  ”
"
 
 ¾
¾
¾
 è
è
è
 •
 
 ¿
¿
¿
 é
é
é
 –
 
 À
À
À
 ê
ê
ê
 —
 
 Á
Á
Á
 ë
ë
ë
 ˜
˜
 
 Â
Â
Â
 ì
ì
ì
 ™
 
 Ã
Ã
Ã
 í
í
í
 š
š
 
 Ä
Ä
Ä
 î
î
î
 ›
 
 Å
Å
Å
 ï
ï
ï
 œ
œ
 
 Æ
Æ
&Aelig
 ð
ð
ð
 
 
 Ç
Ç
Ç
 ñ
ñ
ñ
 
ž
 
 È
È
È
 ò
ò
ò
 Ÿ
Ÿ
 
 É
É
É
 ó
ó
ó
 espace
 
 
 Ê
Ê
&Ecric;
 ô
ô
ô
 ¡
¡
¡
 Ë
Ë
Ë
 õ
õ
õ
 ¢
¢
¢
 Ì
Ì
Ì
 ö
ö
ö
 £
£
£
 Í
Í
Í
 ¸
÷
÷
 ¤
¤
¤
 Î
Î
Î
 ø
ø
ø
 ¥
¥
¥
 Ï
Ï
Ï
 ù
ù
ù
  ¦
¦
¦
 Ð
Ð
Ð
 ú
ú
ú
 §
§
§
 Ñ
Ñ
Ñ
 û
û
û
 ¨
¨
¨
 Ò
Ò
Ò
 ü
ü
ü
 ©
©
©   
 Ó
Ó
Ó
 ý
ý
ý
 ª
ª
ª
 Ô
Ô
Ô
 þ
þ
þ
 
 
 
 
 
 
 ÿ
ÿ
ÿ
Caractère
Code ISO
ENTITY
Caractère
Code ISO
ENTITY
Caractère
Code ISO
ENTITY
   

Le code RVB

INTERNET

Le code couleur
RVB

Le code Couleur

Chaque couleur affiché fait l'objet d'un code : Le code RVB (Rouge, Vert, Bleu) basé sur les trois couleurs fondamentales des tubes cathodiques. Pour mémoire, les trois couleurs fondamentales d'un peintre sont le Rouge, le Jaune et le Bleu.

La couleur affichée est donc le résultat d'un mélange de Rouge, de Vert et de Bleu. La proportion de chacune d'elle est donné selon un code hexadécimale de deux chiffres allant de '00' (0 % ) à 'ff' (100 %).

Par exemple un bleu est codé : '0000FF'. Pour un rouge, ce sera : 'FF0000' et le vert '00FF00'

Cette méthode permet d'afficher plus de 16 millions de couleurs.

Comme tous les ordinateurs ne permettent pas où ne sont pas configurés pour afficher 16 millions de couleur, il est recommandé de travailler sur les 256 couleurs de bases.

Le moyen de les obtenir est, dans la codification d'une couleur, de se limiter au codes, par couleur : 00, 33, 66, 99, CC et FF.

Dans les premiers temps de la programmation HTML, il y avait 16 couleurs de base dite aujourd'hui "couleurs principales" et pouvant être codé par un nom.

Les voicis :



Nom Couleur affichée

black

Noir

black

maroon

Marron ou rouge foncé

maroon

green

Vert

green

olive

Vert olive

olive

navy

Bleu marine

navy

purple

Violet

purple

teal

cyan foncé

teal

gray

Gris

gray

silver

Argent

silver

red

Rouge

red

lime

Vert clair

lime

yellow

Jaune

yellow

blue

Bleu

blue

fuchsia

Fuchia

fuchsia

aqua

Bleu clair

aqua

white

Blanc

white

Avec l'évolution des performance, d'autres couleurs sont venues s'adjoindre (reconue à partir de Netscape 4 et I.Explorer 4).

En voici quelques unes :

Nom Couleur affichée

azure

Bleu azur

azure

bisque

Beige

bisque

brown

Brun

brown

blueviolet

Bleu-violet

blueviolet

chartreuse

Vert clair

chartreuse

chocolate

Brun clair

chocolate

cornsilk

Rose clair

cornsilk

darkgreen

Vert foncé

darkgreen

darkorange

Orange

darkorange

darkorchid

Mauve foncé

darkorchid

deepskyblue

Bleu ciel

deepskyblue

gold

Doré

gold

ivory

Ivoire

ivory

orange

Orange

orange

lavender

Lavande

lavender

pink

Rose

pink

plum

Prune

plum

salmon

Saumon

salmon

snow

Neige

snow

turquoise

Turquoise

turquoise

wheat

Jaune paille

wheat


Et, pour les autres, les voici avec leur codes RVB :

  #000000   #000033   #000066   #000099   #0000CC   #0000FF
  #003300   #003333   #003366   #003399   #0033CC   #0033FF
  #006600   #006633   #006666   #006699   #0066CC   #0066FF
  #009900   #009933   #009966   #009999   #0099CC   #0099FF
  #00CC00   #00CC33   #00CC66   #00CC99   #00CCCC   #00CCFF
  #00FF00   #00FF33   #00FF66   #00FF99   #00FFCC   #00FFFF
  #330000   #330033   #330066   #330099   #3300CC   #3300FF
  #333300   #333333   #333366   #333399   #3333CC   #3333FF
  #336600   #336633   #336666   #336699   #3366CC   #3366FF
  #339900   #339933   #339966   #339999   #3399CC   #3399FF
  #33CC00   #33CC33   #33CC66   #33CC99   #33CCCC   #33CCFF
  #33FF00   #33FF33   #33FF66   #33FF99   #33FFCC   #33FFFF
  #660000   #660033   #660066   #660099   #6600CC   #6600FF
  #663300   #663333   #663366   #663399   #6633CC   #6633FF
  #666600   #666633   #666666   #666699   #6666CC   #6666FF
  #669900   #669933   #669966   #669999   #6699CC   #6699FF
  #66CC00   #66CC33   #66CC66   #66CC99   #66CCCC   #66CCFF
  #66FF00   #66FF33   #66FF66   #66FF99   #66FFCC   #66FFFF
  #990000   #990033   #990066   #990099   #9900CC   #9900FF
  #993300   #993333   #993366   #993399   #9933CC   #9933FF
  #996600   #996633   #996666   #996699   #9966CC   #9966FF
  #999900   #999933   #999966   #999999   #9999CC   #9999FF
  #99CC00   #99CC33   #99CC66   #99CC99   #99CCCC   #99CCFF
  #99FF00   #99FF33   #99FF66   #99FF99   #99FFCC   #99FFFF
  #CC0000   #CC0033   #CC0066   #CC0099   #CC00CC   #CC00FF
  #CC3300   #CC3333   #CC3366   #CC3399   #CC33CC   #CC33FF
  #CC6600   #CC6633   #CC6666   #CC6699   #CC66CC   #CC66FF
  #CC9900   #CC9933   #CC9966   #CC9999   #CC99CC   #CC99FF
  #CCCC00   #CCCC33   #CCCC66   #CCCC99   #CCCCCC   #CCCCFF
  #CCFF00   #CCFF33   #CCFF66   #CCFF99   #CCFFCC   #CCFFFF
  #FF0000   #FF0033   #FF0066   #FF0099   #FF00CC   #FF00FF
  #FF3300   #FF3333   #FF3366   #FF3399   #FF33CC   #FF33FF
  #FF6600   #FF6633   #FF6666   #FF6699   #FF66CC   #FF66FF
  #FF9900   #FF9933   #FF9966   #FF9999   #FF99CC   #FF99FF
  #FFCC00   #FFCC33   #FFCC66   #FFCC99   #FFCCCC   #FFCCFF
  #FFFF00   #FFFF33   #FFFF66   #FFFF99   #FFFFCC   #FFFFFF


Aujourd'hui, les performances de nos ordinateurs et des écrans associés, smartphones, tablettes ouvrent pleinement la palette des couleurs.

Je vous préconise néanmoins, selon la cible de votre site, de veillez à vien choisir vos codes couleurs.

Tous les employés d'entreprise n'ont ps forcément des écrans de hautes performances.

De même, bien penser à la disparité pouvant exister entre pays : tous n'ont pas accès au même matériel ou type d'ordinateur.



Les Codes ASCII

INTERNET

Le code ASCII

Les codes ASCII


Dans le cas du texte, l’ensemble des caractères (lettre A à Z, puis a à z, chiffre 0 à 9, quelques symboles usuels $ ; £, *, + …. et la ponctuation) fait l’objet d’un code internationale dénommée ASCII.

Le code ASCII 7 bits



Code

0
1
2
3
4
5
6
7
8
9
0
NUL
SOH
STX
ETX
EOT
ENQ
ACK
BEL
BS
HT
10
LF
VT
NP
CR
SO
SI
DLE
DC1
DC2
DC3
20
DC4
NAK
SYN
ETB
CAN
EM
SUB
ESC
FS
GS
30
RS
US
SP
!
"
#
$
%
&
'
40
(
)
*
+
,
-
.
/
0
1
50
2
3
4
5
6
7
8
9
:
;
60
<
=
>
?
@
A
B
C
D
E
70
F
G
H
I
J
K
L
M
N
O
80
P
Q
R
S
T
U
V
W
X
Y
90
Z
[
\
]
^
_
`
a
b
c
100
d
e
f
g
h
i
j
k
l
m
110
n
o
p
q
r
s
t
u
v
w
120
x
y
z
{
|
}
~
DEL


De base, le code ASCII codait ces caractères sur 7 bits. Mais étant limité (du fait des 7 bits) et n’incluant pas, du par de son origine américaine, les caractères accentués, il a été étendu à 8 bits.

Le code ASCII 8 bits



Code

0
1
2
3
4
5
6
7
8
9
0
NUL
SOH
STX
ETX
EOT
ENQ
ACK
BEL
BS
HT
10
LF
VT
NP
CR
SO
SI
DLE
DC1
DC2
DC3
20
DC4
NAK
SYN
ETB
CAN
EM
SUB
ESC
FS
GS
30
RS
US
SP
!
"
#
$
%
& '
40
(
)
*
+
,
-
.
/
0
1
50
2
3
4
5
6
7
8
9
:
;
60
<
=
>
?
@
A
B
C
D
E
70
F
G
H
I
J
K
L
M
N
O
80
P
Q
R
S
T
U
V
W
X
Y
90
Z
[
\
]
^
_
`
a
b
c
100
d
e
f
g
h
i
j
k
l
m
110
n
o
p
q
r
s
t
u
v
w
120
x
y
z
{
|
}
~
DEL
130
ƒ
ˆ
Š
140
Œ
Ž
150
˜
š
œ
ž
Ÿ
160
espace
¡
¢
£
¤
¥
¦
§
¨
©
170
ª
«
®
¯
°
±
²
³
180
´
µ
·
¸
¹
º
»
¼
½
190
¾
¿
À
Á
Â
Ã
Ä
Å
Æ
Ç
200
È
É
Ê
Ë
Ì
Í
Î
Ï
Ð
Ñ
210
Ò
Ó
Ô
Õ
Ö
×
Ø
Ù
Ú
Û
220
Ü
Ý
Þ
ß
à
á
â
ã
ä
å
230
æ
ç
è
é
ê
ë
ì
í
î
ï
240
ð
ñ
ò
ó
ô
õ
ö
÷
ø
ù
250
ú
û
ü
ý
þ
ÿ