ISO/IEC 646
193891
222744252
2008-06-30T22:05:01Z
208.81.184.4
+ {{character encoding}}
'''ISO 646''' is an [[International Organization for Standardization|ISO]] standard that since 1972 has specified a 7-[[bit]] character code from which several national standards are derived.
Since the portion of ISO 646 shared by all countries specified only those letters used in the [[English alphabet]], other countries using the [[Latin alphabet]] with extensions needed to create national variants of ISO 646 to be able to use their native languages. Since universal acceptance of the 8 bit [[byte]] did not exist at that time, the national characters had to be made to fit within the constraints of 7 bits, meaning that some characters that appear in ASCII do not appear in other national variants of ISO 646.
ISO/IEC 646 was also ratified by [[Ecma International|ECMA]] as '''ECMA-6'''.
== History ==
ISO/IEC 646 and its predecessor [[ASCII]] ([[American National Standards Institute|ANSI]] X3.4) largely endorses existing practice regarding character encodings in the [[telecommunication]]s industry.
During the [[1960s]], there was debate about whether character encoding standards (at either the national or international levels) for computers should follow 1) existing practice in the telecommunications industry (which was largely paper-tape based, but which was commonly transmitted on-line digitally over wires), or conversely, 2) existing practice in the punched-card portion of the computer industry, whose heritage was especially the off-line storage of [[World War II]]-era electro-mechanical punched-card machines predating [[electronic computer]]s. For obvious corporate-history reasons regarding [[Hollerith]] punched cards, [[IBM]] sided with the punched-card character encodings, embodied by [[EBCDIC]], whereas many other computer manufacturers sided with the telecommunications industry's character encodings.
The [[ISO 8859]] series of standards governing 8-bit character encodings supersede the ISO 646 international standard and its national variants. The [[ISO 10646]] standard, directly related to [[Unicode]], supersedes all of the ISO 646 and ISO 8859 sets of national-variant character encodings with arguably one unified set of character encodings.
== Codepage layout ==
The following table shows the ISO/IEC 646 character set. Each character is shown with its decimal code and its [[Unicode]] equivalent. Grey shaded cells indicate code points with character [[glyph]]s that vary from region to region. These are discussed in detail below.
{| {{chset-tableformat}}
|-
! colspan="17" |ISO/IEC 646
|-
| width="4%" |
! width="6%" | —0 || width="6%" | —1
! width="6%" | —2 || width="6%" | —3
! width="6%" | —4 || width="6%" | —5
! width="6%" | —6 || width="6%" | —7
! width="6%" | —8 || width="6%" | —9
! width="6%" | —A || width="6%" | —B
! width="6%" | —C || width="6%" | —D
! width="6%" | —E || width="6%" | —F
|-
!{{chset-left|0}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0000|[[Null character|NUL]]|0}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0001|[[Start of heading|SOH]]|1}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0002|[[Start of text|STX]]|2}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0003|[[End of text|ETX]]|3}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0004|[[End of transmission character|EOT]]|4}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0005|[[Enquiry character|ENQ]]|5}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0006|[[Acknowledge character|ACK]]|6}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0007|[[Bell character|BEL]]|7}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0008|[[Backspace|BS]]|8}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0009|[[Tab key|HT]]|9}}
|{{chset-color-ctrl}}|{{chset-ctrl3|000A|[[Line feed|LF]]|10}}
|{{chset-color-ctrl}}|{{chset-ctrl3|000B|[[Vertical tab|VT]]|11}}
|{{chset-color-ctrl}}|{{chset-ctrl3|000C|[[Form feed|FF]]|12}}
|{{chset-color-ctrl}}|{{chset-ctrl3|000D|[[Carriage return|CR]]|13}}
|{{chset-color-ctrl}}|{{chset-ctrl3|000E|[[Shift out|SO]]|14}}
|{{chset-color-ctrl}}|{{chset-ctrl3|000F|[[Shift in|SI]]|15}}
|-
!{{chset-left|1}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0010|[[Data link escape|DLE]]|16}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0011|[[Device Control 1|DC1]]|17}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0012|[[Device Control 2|DC2]]|18}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0013|[[Device Control 3|DC3]]|19}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0014|[[Device Control 4|DC4]]|20}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0015|[[Negative acknowledge character|NAK]]|21}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0016|[[Synchronous idle|SYN]]|22}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0017|[[End of transmission block|ETB]]|23}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0018|[[Cancel|CAN]]|24}}
|{{chset-color-ctrl}}|{{chset-ctrl3|0019|[[End of medium|EM]]|25}}
|{{chset-color-ctrl}}|{{chset-ctrl3|001A|[[Substitute character|SUB]]|26}}
|{{chset-color-ctrl}}|{{chset-ctrl3|001B|[[Escape character|ESC]]|27}}
|{{chset-color-ctrl}}|{{chset-ctrl3|001C|[[File separator|FS]]|28}}
|{{chset-color-ctrl}}|{{chset-ctrl3|001D|[[Group separator|GS]]|29}}
|{{chset-color-ctrl}}|{{chset-ctrl3|001E|[[Record separator|RS]]|30}}
|{{chset-color-ctrl}}|{{chset-ctrl3|001F|[[Unit separator|US]]|31}}
|-
!{{chset-left|2}}
|{{chset-color-punct}}|{{chset-ctrl3|0020|[[space character|SP]]|32}}
|{{chset-color-punct}}|{{chset-cell3|0021|[[Exclamation mark|!]]|33}}
|{{chset-color-undef}}|{{chset-cell3|0022|[[Quotation mark|"]]|34}}
|{{chset-color-undef}}|{{chset-cell3|0023| |35}}
|{{chset-color-undef}}|{{chset-cell3|0024| |36}}
|{{chset-color-punct}}|{{chset-cell3|0025|[[Percent sign|%]]|37}}
|{{chset-color-punct}}|{{chset-cell3|0026|[[Ampersand|&]]|38}}
|{{chset-color-undef}}|{{chset-cell3|0027|[[Apostrophe|']]|39}}
|{{chset-color-punct}}|{{chset-cell3|0028|[[Bracket|(]]|40}}
|{{chset-color-punct}}|{{chset-cell3|0029|[[Bracket|)]]|41}}
|{{chset-color-punct}}|{{chset-cell3|002A|[[Asterisk|*]]|42}}
|{{chset-color-punct}}|{{chset-cell3|002B|[[Plus and minus signs|+]]|43}}
|{{chset-color-undef}}|{{chset-cell3|002C|[[Comma (punctuation)|,]]|44}}
|{{chset-color-undef}}|{{chset-cell3|002D|[[Plus and minus signs|-]]|45}}
|{{chset-color-punct}}|{{chset-cell3|002E|[[Full stop|.]]|46}}
|{{chset-color-undef}}|{{chset-cell3|002F|[[Slash (punctuation)|/]]|47}}
|-
!{{chset-left|3}}
|{{chset-color-digit}}|{{chset-cell3|0030|0|48}}
|{{chset-color-digit}}|{{chset-cell3|0031|1|49}}
|{{chset-color-digit}}|{{chset-cell3|0032|2|50}}
|{{chset-color-digit}}|{{chset-cell3|0033|3|51}}
|{{chset-color-digit}}|{{chset-cell3|0034|4|52}}
|{{chset-color-digit}}|{{chset-cell3|0035|5|53}}
|{{chset-color-digit}}|{{chset-cell3|0036|6|54}}
|{{chset-color-digit}}|{{chset-cell3|0037|7|55}}
|{{chset-color-digit}}|{{chset-cell3|0038|8|56}}
|{{chset-color-digit}}|{{chset-cell3|0039|9|57}}
|{{chset-color-punct}}|{{chset-cell3|003A|:|58}}
|{{chset-color-punct}}|{{chset-cell3|003B|;|59}}
|{{chset-color-punct}}|{{chset-cell3|003C|<|60}}
|{{chset-color-punct}}|{{chset-cell3|003D|=|61}}
|{{chset-color-punct}}|{{chset-cell3|003E|>|62}}
|{{chset-color-punct}}|{{chset-cell3|003F|?|63}}
|-
!{{chset-left|4}}
|bgcolor="#D0D0D0" |{{chset-cell3|0040| |64}}
|{{chset-color-alpha}}|{{chset-cell3|0041|A|65}}
|{{chset-color-alpha}}|{{chset-cell3|0042|B|66}}
|{{chset-color-alpha}}|{{chset-cell3|0043|C|67}}
|{{chset-color-alpha}}|{{chset-cell3|0044|D|68}}
|{{chset-color-alpha}}|{{chset-cell3|0045|E|69}}
|{{chset-color-alpha}}|{{chset-cell3|0046|F|70}}
|{{chset-color-alpha}}|{{chset-cell3|0047|G|71}}
|{{chset-color-alpha}}|{{chset-cell3|0048|H|72}}
|{{chset-color-alpha}}|{{chset-cell3|0049|I|73}}
|{{chset-color-alpha}}|{{chset-cell3|004A|J|74}}
|{{chset-color-alpha}}|{{chset-cell3|004B|K|75}}
|{{chset-color-alpha}}|{{chset-cell3|004C|L|76}}
|{{chset-color-alpha}}|{{chset-cell3|004D|M|77}}
|{{chset-color-alpha}}|{{chset-cell3|004E|N|78}}
|{{chset-color-alpha}}|{{chset-cell3|004F|O|79}}
|-
!{{chset-left|5}}
|{{chset-color-alpha}}|{{chset-cell3|0050|P|80}}
|{{chset-color-alpha}}|{{chset-cell3|0051|Q|81}}
|{{chset-color-alpha}}|{{chset-cell3|0052|R|82}}
|{{chset-color-alpha}}|{{chset-cell3|0053|S|83}}
|{{chset-color-alpha}}|{{chset-cell3|0054|T|84}}
|{{chset-color-alpha}}|{{chset-cell3|0055|U|85}}
|{{chset-color-alpha}}|{{chset-cell3|0056|V|86}}
|{{chset-color-alpha}}|{{chset-cell3|0057|W|87}}
|{{chset-color-alpha}}|{{chset-cell3|0058|X|88}}
|{{chset-color-alpha}}|{{chset-cell3|0059|Y|89}}
|{{chset-color-alpha}}|{{chset-cell3|005A|Z|90}}
|{{chset-color-undef}}|{{chset-cell3|005B| |91}}
|{{chset-color-undef}}|{{chset-cell3|005C| |92}}
|{{chset-color-undef}}|{{chset-cell3|005D| |93}}
|{{chset-color-undef}}|{{chset-cell3|005E| |94}}
|{{chset-color-undef}}|{{chset-cell3|005F|[[Underscore|_]]|95}}
|-
!{{chset-left|6}}
|{{chset-color-undef}}|{{chset-cell3|0060| |96}}
|{{chset-color-alpha}}|{{chset-cell3|0061|a|97}}
|{{chset-color-alpha}}|{{chset-cell3|0062|b|98}}
|{{chset-color-alpha}}|{{chset-cell3|0063|c|99}}
|{{chset-color-alpha}}|{{chset-cell3|0064|d|100}}
|{{chset-color-alpha}}|{{chset-cell3|0065|e|101}}
|{{chset-color-alpha}}|{{chset-cell3|0066|f|102}}
|{{chset-color-alpha}}|{{chset-cell3|0067|g|103}}
|{{chset-color-alpha}}|{{chset-cell3|0068|h|104}}
|{{chset-color-alpha}}|{{chset-cell3|0069|i|105}}
|{{chset-color-alpha}}|{{chset-cell3|006A|j|106}}
|{{chset-color-alpha}}|{{chset-cell3|006B|k|107}}
|{{chset-color-alpha}}|{{chset-cell3|006C|l|108}}
|{{chset-color-alpha}}|{{chset-cell3|006D|m|109}}
|{{chset-color-alpha}}|{{chset-cell3|006E|n|110}}
|{{chset-color-alpha}}|{{chset-cell3|006F|o|111}}
|-
!{{chset-left|7}}
|{{chset-color-alpha}}|{{chset-cell3|0070|p|112}}
|{{chset-color-alpha}}|{{chset-cell3|0071|q|113}}
|{{chset-color-alpha}}|{{chset-cell3|0072|r|114}}
|{{chset-color-alpha}}|{{chset-cell3|0073|s|115}}
|{{chset-color-alpha}}|{{chset-cell3|0074|t|116}}
|{{chset-color-alpha}}|{{chset-cell3|0075|u|117}}
|{{chset-color-alpha}}|{{chset-cell3|0076|v|118}}
|{{chset-color-alpha}}|{{chset-cell3|0077|w|119}}
|{{chset-color-alpha}}|{{chset-cell3|0078|x|120}}
|{{chset-color-alpha}}|{{chset-cell3|0079|y|121}}
|{{chset-color-alpha}}|{{chset-cell3|007A|z|122}}
|{{chset-color-undef}}|{{chset-cell3|007B| |123}}
|{{chset-color-undef}}|{{chset-cell3|007C| |124}}
|{{chset-color-undef}}|{{chset-cell3|007D| |125}}
|{{chset-color-undef}}|{{chset-cell3|007E| |126}}
|{{chset-color-ctrl}} |{{chset-ctrl3|007F|[[Delete character|DEL]]|127}}
|}
== National variants ==
Some national variants of ISO 646 are:
{|width="100%" border="0" cellspacing="0" cellpadding="0"
|-
|width="50%" valign="top"|
{|width="100%" border="1" cellspacing="0" cellpadding="2" style="border:1px solid #AAAAAA;border-collapse:collapse;background-color:#F8F8F8;"
|-bgcolor="#EEEEEE"
!Code
!ISO-<br />IR
!Standard
!Used in
|-
!CA-1
|align="center"|121
|CSA Z243.4-1985
|[[Canada]] (nr. 1 alternative, with “î”)<br />([[French language|French]], classical)
|-
!CA-2
|align="center"|122
|CSA Z243.4-1985
|[[Canada]] (nr. 2 alternative, with “É”)<br />([[French language|French]], reformed orthography)
|-
!CN
|align="center"|057
|GB/T 1988-80
|[[People's Republic of China]] (Basic Latin)
|-
!CU
|align="center"|151
|NC 99-10:81
|[[Cuba]] ([[Spanish language|Spanish]])
|-
!DE
|align="center"|021
|[[DIN]] 66003
|[[Germany]] ([[German language|German]])
|-
!DK
|align="center"|—
|DS 2089
|[[Denmark]] ([[Danish language|Danish]])
|-
!FR
|align="center"|069
|[[AFNOR]] NF Z 62010-1982
|[[France]] ([[French language|French]])
|-
!FR-0
|align="center"|025
|[[AFNOR]] NF Z 62010-1973
|[[France]] (obsolete since April 1985)
|-
!GB
|align="center"|004
|[[British Standards|BSI]] 4730
|[[United Kingdom]] ([[English language|English]])
|-
!GR
|align="center"|088
|HOS ELOT
|[[Greece]] (obsolete)
|-
!HU
|align="center"|086
|MSZ 7795/3
|[[Hungary]]([[Hungarian language|Hungarian]])
|-
!IE
|align="center"|207
|NSAI 433:1996
|[[Ireland]] ([[Irish language|Irish Goidelic]])
|}
|width="20"|
|width="50%" valign="top"|
{|width="100%" border="1" cellspacing="0" cellpadding="2" style="border:1px solid #AAAAAA;border-collapse:collapse;background-color:#F8F8F8;"
|-bgcolor="#EEEEEE"
!Code
!ISO-<br />IR
!Standard
!Used in
|-
!INV
|align="center"|—
[[International Organization for Standardization | ISO]] 646:1983
|international ('''Invariant''' subset)
|-
!IRV
|align="center"|002
[[International Organization for Standardization | ISO]] 646:1983
|'''International Reference Variant'''
|-
!JA
|align="center"|014
|[[JIS]] C 6220-1969
|[[Japan]] ([[Romaji]])
|-
!JA-O
|align="center"|092
|[[JIS]] C 6229-1984
|[[Japan]] ([[OCR]]-B)
|-
!KR
|align="center"|—
|?
|[[South Korea]]
|-
!MT
|align="center"|—
|?
|[[Malta]] ([[Maltese language|Maltese]], [[English language|English]])
|-
!NO
|align="center"|060
|NS 4551 version 1
|[[Norway]]
|-
!NO-2
|align="center"|061
|NS 4551 version 2
|[[Norway]] (obsolete since June 1987)
|-
!SE
|align="center"|010
|[[SEN]] 85 02 00 Annex B
|[[Sweden]] (basic [[Swedish language|Swedish]])
|-
!SE-C
|align="center"|011
|[[SEN]] 85 02 00 Annex C
|[[Sweden]] (extended [[Swedish language|Swedish]] for names)
|-
!T.61
|align="center"|102
|[[ITU]]/[[CCITT]] T.61 Recommendation
|International ([[Teletex]])
|-
!US
|align="center"|006
|[[American National Standards Institute|ANSI]] X3.4-1968
|[[United States]] ([[ASCII]])
|-
!YU
|align="center"|141
|JUS I.B1.002 ([[YUSCII]])
|[[Socialist Federal Republic of Yugoslavia|former Yugoslavia]] ([[Croatian language|Croatian]], [[Slovenian language|Slovenian]], [[Serbian language|Serbian]], [[Latin]])
|}
|}
Other proprietary standards approved later for international use by some standard committees:
{|width="100%" border="0" cellspacing="0" cellpadding="0"
|-
|width="50%" valign="top"|
{|width="100%" border="1" cellspacing="0" cellpadding="2" style="border:1px solid #AAAAAA;border-collapse:collapse;background-color:#F8F8F8;"
|-bgcolor="#EEEEEE"
!Code
!ISO-<br />IR
!Approved by
!Origin
!Used in
|-
!ES
|align="center"|085
|[[ECMA]]
|[[IBM]]
|[[Spain]] ([[Basque language|Basque]], [[Spanish language|Castilian]], [[Catalan language|Catalan]], [[Galician language|Galician]])
|-
!esp
|align="center"|017
|[[ECMA]]
|[[Olivetti]]
|[[Spanish language|Spanish]] (international)
|-
!DK-SE
|align="center"|009-1
|[[SSK]]
|NATS, main set
|[[Sweden]] and [[Denmark]] (journalistic texts)
|-
!FI-SE
|align="center"|008-1
|[[SSK]]
|NATS, main set
|[[Sweden]] and [[Finland]] (journalistic texts)
|}
|width="20"|
|width="50%" valign="top"|
{|width="100%" border="1" cellspacing="0" cellpadding="2" style="border:1px solid #AAAAAA;border-collapse:collapse;background-color:#F8F8F8;"
|-bgcolor="#EEEEEE"
!Code
!ISO-<br />IR
!Approved by
!Origin
!Used in
|-
!ita
|align="center"|015
|[[ECMA]]
|[[Olivetti]]
|[[Italian language|Italian]]
|-
!PT
|align="center"|084
|[[ECMA]]
|[[IBM]]
|[[Portugal]] ([[Portuguese language|Portuguese]], [[Spanish language|Spanish]])
|-
!por
|align="center"|016
|[[ECMA]]
|[[Olivetti]]
|[[Portuguese language|Portuguese]] (international)
|}
|}
The specifics of the changes for some of these variants are given in this table:
<!--what exactly are the colors in this table meant to mean?-->
{|width="100%" border="1" cellspacing="0" cellpadding="2" style="border:1px solid #AAAAAA;border-collapse:collapse;background-color:#F8F8F8;"
|-bgcolor="#EEEEEE"
!colspan="3"|Codes
!colspan="30"|Characters for each ISO 646 compatible charset
|-bgcolor="#EEEEEE"
![[binary numeral system|binary]]!![[decimal]]!![[Hexadecimal|hexa]]
!INV
!US
!T.61
!JA
!JA-O
!KR
!CN
!IRV
!GB
!DK
!NO
!NO-2
!SE
!SE-C
!DE
!HU
!FR
!FR-0
!CA-1
!CA-2
!IE
!IS
!ita
!por
!PT
!esp
!ES
!CU
!MT
!YU
|-bgcolor="#FFFFFF"
|bgcolor="#EEEEEE" align="right"|010 0010
|bgcolor="#EEEEEE" align="right"|34
|bgcolor="#EEEEEE" align="right"|22
|align="center"|"
|align="center"|"
|align="center"|"
|align="center"|"
|align="center"|"
|align="center"|"
|align="center"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
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|align="center"|"
|align="center"|"
|align="center" bgcolor="#FFCCCC"|"
|align="center" bgcolor="#FFCCCC"|"
|-
|bgcolor="#EEEEEE" align="right"|010 0011
|bgcolor="#EEEEEE" align="right"|35
|bgcolor="#EEEEEE" align="right"|23
|align="center" bgcolor="#666666"|
|align="center"|#
|align="center"|#
|align="center"|#
|align="center"|#
|align="center"|#
|align="center"|#
|align="center"|#
|align="center" bgcolor="#CCCCFF"|£
|align="center"|#
|align="center"|#
|align="center" bgcolor="#CCCCFF"|§
|align="center"|#
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|align="center" bgcolor="#CCCCFF"|£
|align="center" bgcolor="#CCCCFF"|£
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|align="center" bgcolor="#CCCCFF"|£
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|align="center"|#
|align="center"|#
|align="center"|#
|align="center"|#
|-
|bgcolor="#EEEEEE" align="right"|010 0100
|bgcolor="#EEEEEE" align="right"|36
|bgcolor="#EEEEEE" align="right"|24
|align="center" bgcolor="#666666"|
|align="center"|$
|align="center" bgcolor="#CCCCFF"|¤
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|align="center" bgcolor="#CCCCFF"|¥
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|align="center"|$
|align="center" bgcolor="#CCCCFF"|¤
|align="center"|$
|align="center"|$
|-bgcolor="#FFFFFF"
|bgcolor="#EEEEEE" align="right"|010 1001
|bgcolor="#EEEEEE" align="right"|39
|bgcolor="#EEEEEE" align="right"|27
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|-bgcolor="#FFFFFF"
|bgcolor="#EEEEEE" align="right"|010 1100
|bgcolor="#EEEEEE" align="right"|44
|bgcolor="#EEEEEE" align="right"|2C
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In the table above, the cells with non-white background emphasize the differences from the US variant used in the Basic Latin subset of ISO/IEC 10646 and Unicode.
The characters displayed in cells with red background could be used as [[Combining character|combining diacritics]], when preceded or followed with a backspace [[C0 and C1 control codes|C0 control]] (this encoding method is [[Deprecation|deprecated]] or is not recommended as it was part of some withdrawn national standards). Without such complex encoding, they are no different from the symbols used in the US variant (although glyph variants are still possible, especially on the quotation marks, and circumflex or tilde symbols).
Later, when 8 bit character sets gained more acceptance, [[ISO 8859-1]], [[ISO 8859-2]], and [[ISO 8859-3]] became the preferred method of coding most of these variants.
== Variants of ASCII that are not ISO 646 ==
There are also some 7-bit character sets that are not officially part of the ISO 646 standard. Examples include:
* 7-bit Greek, [[ELOT 927]]<!--the IANA doesn't seem to have heared of this does anyone have any idea where i could find docs on it to start an article and clarify the statements here?-->. The [[Greek alphabet]] is mapped to positions 0x61–0x71 and 0x73–0x79, on top of the Latin lowercase letters. This mapping with the high bit set is [[ISO 8859-7]].
* 7-bit Cyrillic, [[KOI-7]] or Short KOI. The Cyrillic characters are mapped to positions 0x60–0x7E, on top of the Latin lowercase letters. Superseded by the [[KOI8-R|KOI-8]] variants.
* 7-bit Hebrew, [[SI 960]]. The [[Hebrew alphabet]] is mapped to positions 0x60–0x7A, on top of the lowercase Latin letters (and grave accent for aleph). 7-bit Hebrew was always stored in visual order. This mapping with the high bit set, i.e. with the Hebrew letters in 0xE0–0xFA, is [[ISO 8859-8]].
* 7-bit Arabic, [[ASMO 449]]. The [[Arabic alphabet]] is mapped to positions 0x41–0x5A and 0x60–0x6A, on top of both uppercase and lowercase Latin letters. This mapping with the high bit set is [[ISO 8859-6]].
== See also ==
* [[ASCII]]
* [[Extended ASCII]]
* [[EBCDIC]]
* [[ISO/IEC 2022]]
* [[ISO 8859]]
* [[ISO 10646]]
* [[Unicode]]
* [[C Trigraph]]
* [[ISO/IEC 6937]] (ANSI)
== External links ==
* [http://www.soziologie.uni-halle.de/unger/scripts/workshop_internet/ref_char_646.html Zeichensatz nach ISO 646 (ASCII)] (in German)
* [http://aspell.net/charsets/iso646.html History] at [[GNU Aspell]] website
* [http://kanji.zinbun.kyoto-u.ac.jp/~yasuoka/CJK.html Character Tables by Koichi Yasuoka] (see ''Domestic ISO646 Character Tables'' and ''Quasi-ISO646 Character Tables'')
* [http://www.hlst.sabanciuniv.edu/TL/deascii.html Turkish Text ''Deasciifier''] a tool (based on statistical pentagram analysis of the Turkish language) which reverts an ASCII'fied Turkish text by determining the appropriate (but ambiguous) diacritics normally needed in Turkish but missing in the US-ASCII set.
{{character encoding}}
[[Category:ISO standards|#00646]]
[[Category:Character sets]]
[[Category:IEC standards]]
[[Category:Ecma standards]]
[[de:ISO 646]]
[[fr:ISO 646]]
[[it:ISO 646]]
[[hu:ISO/IEC 646]]
[[ja:ISO/IEC 646]]
[[pl:ISO/IEC 646]]
[[sv:ISO/IEC 646]]
[[zh:ISO/IEC 646]]