DKOI (russian: ДКОИ, Двоичный Код Обработки Информации, "Binary Code for Information Processing") is an
EBCDIC
Extended Binary Coded Decimal Interchange Code (EBCDIC; ) is an eight- bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems. It descended from the code used with punched cards and the corresponding ...
encoding for
Russian Cyrillic. It is a
Telegraphy
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas ...
-based encoding used in
ES EVM
The ES EVM (russian: Единая система электронных вычислительных машин (ЕС ЭВМ), translit=Yedinaya sistema electronnykh vytchislitel'nykh mashin (ES EVM), "Unified System of Electronic Computers"), o ...
mainframes.
[ ''Вострикова З. П.'' Программирование на языке ассемблера ЕС ЭВМ. — М.: Наука, 1981. — С. 291.] It has been defined by several standards:
GOST
GOST (russian: ГОСТ) refers to a set of International standard, international Technical standard, technical Standardization, standards maintained by the ''Euro-Asian Council for Standardization, Metrology and Certification (EASC)'', a region ...
19768-74 / ST SEV 358-76, ST SEV 358-88 / GOST 19768-93,
CSN 36 9103.
DKOI K1
In DKOI K1 (ДКОИ К1), each Cyrillic letter is given its own code point. Characters are shown with their equivalent
Unicode
Unicode, formally The Unicode Standard,The formal version reference is is an information technology standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems. The standard, wh ...
codes. The dollar sign may be placed in code point 0x5B; in that case the currency sign is in code point 0xE1.
[
]
DKOI K2
In DKOI K2 (ДКОИ К2), some Cyrillic letters (А, В, Е, К, М, Н, О, Р, С, Т, Х, а, е, о, р, с, у, х) are merged with visually identical Latin letters (A, B, E, K, M, H, O, P, C, T, X, a, e, o, p, c, y, x). Code points 0x5F and 0xA1 are negation and overline
An overline, overscore, or overbar, is a typographical feature of a horizontal line drawn immediately above the text. In old mathematical notation, an overline was called a '' vinculum'', a notation for grouping symbols which is expressed in m ...
instead of and . The dollar sign may be placed in code point 0x5B; in that case the currency sign is in code point 0xE1.[
]
Code page 880
IBM code page 880 is mostly a superset of DKOI K1, adding support for Cyrillic letters not used in Russian but used in Serbian Cyrillic
The Serbian Cyrillic alphabet ( sr, / , ) is a variation of the Cyrillic script used to write the Serbian language, updated in 1818 by Serbian linguist Vuk Karadžić. It is one of the two alphabets used to write standard modern Serbian, t ...
, Macedonian Cyrillic
The orthography of the Macedonian language includes an alphabet consisting of 31 letters ( mk, Македонска азбука, Makedonska azbuka), which is an adaptation of the Cyrillic script, as well as language-specific conventions of spelli ...
, Belarusian Cyrillic or Soviet-era Ukrainian Cyrillic (i.e. including the Ukrainian Ye but not the Ukrainian Ge). 0x6A is a continuous vertical bar (like in code page 38), rather than a broken vertical bar (like in code pages 37 and 500), and 0x5B is always a dollar sign rather than a universal currency sign.
See also
* EBCDIC 410
Extended Binary Coded Decimal Interchange Code (EBCDIC; ) is an eight-bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems. It descended from the code used with punched cards and the corresponding six- ...
* EBCDIC 1025
Extended Binary Coded Decimal Interchange Code (EBCDIC; ) is an eight-bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems. It descended from the code used with punched cards and the corresponding six ...
Footnotes
References
{{Character encoding
Character sets
EBCDIC code pages