ISO-IR-153 (ST SEV 358-88) is an 8-bit

character set Character encoding is the process of assigning numbers to graphical characters, especially the written characters of human language, allowing them to be stored, transmitted, and transformed using computers. The numerical values that make up a c ...

that covers the

Russian Russian(s) may refer to: *Russians (), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *A citizen of Russia *Russian language, the most widely spoken of the Slavic languages *''The Russians'', a b ...

and Bulgarian alphabets. Unlike the KOI encodings, this encoding lists the Cyrillic letters in their correct traditional order. This has become the basis for

ISO/IEC 8859-5 ISO/IEC 8859-5:1999, ''Information technology — 8-bit single-byte coded graphic character sets — Part 5: Latin/Cyrillic alphabet'', is part of the ISO/IEC 8859 series of ASCII-based standard character encodings, first edition published in 198 ...

and the Cyrillic Unicode block.

Standards and Naming

The name ISO-IR-153 refers to this set's number in the

ISO-IR ISO/IEC 2022 ''Information technology—Character code structure and extension techniques'', is an ISO/IEC standard in the field of character encoding. It is equivalent to the ECMA standard ECMA-35, the ANSI standard ANSI X3.41 and the Japanese ...

registry, and marks it as a set which may be used within

ISO/IEC 2022 ISO/IEC 2022 ''Information technology—Character code structure and extension techniques'', is an ISO/ IEC standard in the field of character encoding. It is equivalent to the ECMA standard ECMA-35, the ANSI standard ANSI X3.41 and the Japane ...

. ISO-IR-153 is a subset of

(synchronised with ECMA-113 since 1988). The ISO-IR-153 documentation cites ST SEV 358-88 as the source standard. While it also cites the earlier

GOST GOST () refers to a set of international technical standards maintained by the Euro-Asian Council for Standardization, Metrology and Certification (EASC), a regional standards organization operating under the auspices of the Commonwealth of I ...

19768-74 (which defines

KOI-8 KOI-8 (КОИ-8) is an 8-bit character set standardized in GOST 19768-74. Маркелова Л. Н. Эксплуатация программоуправляемой вычислительной машины «Искра 226». — М.: М� ...

and was conformed to by the first version of ECMA-113, i.e.

ISO-IR-111 ISO-IR-111 or KOI8-E is an 8-bit character set. It is a multinational extension of KOI-8 for Belarusian, Macedonian, Serbian, and Ukrainian (except Ґґ which is added to KOI8-F). The name "ISO-IR-111" refers to its registration number in t ...

), it does not follow the

layout (rather using a close modification of the letter layout from the Main code page) so this appears to be in error. The ISO-IR-153 encoding was intended to replace GOST 19768-74, and is sometimes referred to as GOST-19768-87. This confusion has led to a common misconception that ISO-8859-5 was defined in or based on GOST 19768-74. Notwithstanding the extents of their accuracy, the

IANA The Internet Assigned Numbers Authority (IANA) is a standards organization that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System (DNS), media types, and other Internet P ...

lists , and as labels which may be used for the ISO-IR-153 encoding on the

Internet The Internet (or internet) is the Global network, global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a internetworking, network of networks ...

, with reference to RFC 1345, which assigns it those labels. GOST R 34.303-92 includes the ISO-IR-153 code page and dubs it KOI-8 V1 (in addition to using ''KOI-8 N1'' and ''KOI-8 N2'' for two Alternative code page/

Code page 866 Code page 866 ( CCSID 866) (CP 866, "DOS Cyrillic Russian") is a code page used under DOS and OS/2 in Russia to write Cyrillic script. It is based on the "alternative code page" () developed in 1984 in IHNA AS USSR and published in 1986 by a res ...

variants).

Character set

The following table shows the ISO-IR-153 encoding. Each character is shown with its equivalent

Unicode Unicode or ''The Unicode Standard'' or TUS is a character encoding standard maintained by the Unicode Consortium designed to support the use of text in all of the world's writing systems that can be digitized. Version 16.0 defines 154,998 Char ...

code point. The encoding closely resembles the letter subset of the Cyrillic part of the Main code page, apart from the relocation of the uppercase Ё from 0xF0 to 0xA1.

ISO-8859-5 ISO/IEC 8859-5:1999, ''Information technology — 8-bit single-byte coded graphic character sets — Part 5: Latin/Cyrillic alphabet'', is part of the ISO/IEC 8859 series of ASCII-based standard character encodings, first edition published in 198 ...

is a superset.

References

{{Character encoding Character sets

Standards and Naming

Character set

See also

References