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ISO/IEC 646

ISO/IEC 646, is an ISO/IEC standard in the field of character encoding. It is equivalent to the ECMA standard ECMA-6 and developed in cooperation with ASCII at least since 1964. The first version of ECMA-6 had been published in 1965, based on work the ECMA's Technical Committee TC1 had carried out since December 1960. The first edition of ISO/IEC 646 was…

Characters, History & Standards

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Classification
7-bit Basic Latin encoding
Other related encodings
DEC NRCS, World System Teletext Adaptations to other alphabets: ELOT 927, Symbol, KOI-7, SRPSCII and MAKSCII, ASMO 449, SI 960
Preceded by
US-ASCII
Standard
ISO/IEC 646, ITU T.50
Succeeded by
ISO/IEC 8859, ISO/IEC 10646

Topics to explore

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Overview

History

Code page layout

Composite Graphic Characters

Variant codes and descriptions

Variant comparison chart

Related encoding families

Derivatives for other alphabets

Advanced semantic analysis

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Map overview Semantic statistics

ISO/IEC 646

Nodes86
Edges85
Triples135
Avg. degree1.98
Density0.023256
Components1

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ISO/IEC 646

Top relations

related to Derivatives for other alphabets · 54
ISO/IEC 646 → Although, Arabic, ASCII, ASCII Roman, ASMO, Cyrillic, CyrillicKOI-7, Examples, G0, Greek, Hebrew, In ELOT, ISO-IR-018, ISO-IR-019, ISO-IR-027, ISO-IR-088, ISO-IR-089, ISO-IR-230, ISO/IEC, It
related to External links · 15
ISO/IEC 646 → ASCII, ASCII'fied Turkish, Character Tables Character Tables, Domestic ISO646 Character Tables, German, GNU Aspell, History, Information, ISO, ISO/IEC, Koichi Yasuoka, Quasi-ISO646 Character Tables, Turkish, Turkish Text Deasciifier, US-ASCII
related to Variant comparison chart · 15
ISO/IEC 646 → ASCII, Basic Latin, Character, DEC's, ETS, European World System Teletext, For, Individual, ISO/IEC, National Replacement Character Set, NRCS, The, Unicode, US-ASCII, VT200
related to World System Teletext · 13
ISO/IEC 646 → Arabic, ASCII, Cyrillic, Enhanced Teletext, ETS, G0, Greek, Hebrew, ISO/IEC, Latin, Like NRCS, The European, Unlike NRCS
related to National Replacement Character Set · 12
ISO/IEC 646 → All NRCS, ASCII, DEC, Dutch, ISO/IEC, It, NRCS, Set, Several NRCS, Swiss, The National Replacement Character, VT200
related to Composite Graphic Characters · 8
ISO/IEC 646 → According, As, BS, C0, For, ISO/IEC, Several, This
related to Associated supplementary character sets · 4
ISO/IEC 646 → ISO/IEC, NATS, The, These
related to National derivatives · 3
ISO/IEC 646 → Derivatives, ISO/IEC, Some
Classification · 1
ISO/IEC 646 → 7-bit Basic Latin encoding
Other related encodings · 1
ISO/IEC 646 → DEC NRCS, World System Teletext Adaptations to other alphabets: ELOT 927, Symbol, KOI-7, SRPSCII and MAKSCII, ASMO 449, SI 960

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Important terminology

iso iec 646 character code ascii national letters variants latin characters set used encoding standard 7-bit points invariant teletext mapped

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
ISO/IEC 646Classification7-bit Basic Latin encoding1.00infobox
ISO/IEC 646Other related encodingsDEC NRCS, World System Teletext Adaptations to other alphabets: ELOT 927, Symbol, KOI-7, SRPSCII and MAKSCII, ASMO 449, SI 9601.00infobox
ISO/IEC 646Preceded byUS-ASCII1.00infobox
ISO/IEC 646StandardISO/IEC 646, ITU T.501.00infobox
ISO/IEC 646Succeeded byISO/IEC 8859, ISO/IEC 106461.00infobox
ISO/IEC 2022instance ofThis is in contrast to later standards0.80text
ISO/IEC 10646 which permit or include combining characters.Several spacing characters can be used as diacritical marksinstance ofThis is in contrast to later standards0.80text
when preceded or followed with a backspace C0 control to create accented lettersinstance ofThis is in contrast to later standards0.80text
referred to as composite graphic characters in the standardinstance ofThis is in contrast to later standards0.80text
listed in the following tableinstance ofand are to be used with a C0 control character set0.80text
shift out or the NATS super shiftinstance ofThese would be selected by using a mechanism0.80text
ISO/IEC 646related to Associated supplementary character setsThe0.60section

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