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KOI-7

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From Wikipedia, the free encyclopedia

Character encoding system for Russian

For the star, seeKepler-4.

Short KOI
Kermit	SHORT-KOI
Alias(es)	KOI-7 N2, ВКД
Language	Russian
Standard	GOST 13052, GOST 27463
Classification	7-bitKOI encoding
Preceded by	MTK-2
Succeeded by	KOI-8
Other related encodings	YUSCII,ISO 646

KOI-7 Switched
MIME / IANA	KOI7-switched
Alias(es)	csKOI7switched
Language	Russian
Standard	GOST 13052, GOST 27463
Classification	7-bitstateful KOI encoding
Transforms / Encodes	ISO 646:IRV (shift-in) KOI-7 N1 (shift-out)
Preceded by	MTK-2
Succeeded by	KOI-8
Other related encodings	YUSCII,ISO 5427

KOI-7 (КОИ-7) is a 7-bitcharacter encoding, designed to coverRussian, which uses theCyrillic alphabet.

In Russian, KOI-7 stands forKod Obmena Informatsiey, 7 bit (Код Обмена Информацией, 7 бит) which means "Code for Information Exchange, 7 bit".^[1]

It was first standardized in GOST 13052-67 (with the 2nd revision GOST 13052-74 / STSEV 356-76) and GOST 27463-87 / ST SEV 356-86.

Shift Out (SO) andShift In (SI)control characters are used in KOI-7, where SO starts printingRussian letters (KOI-7 N1), and SI starts printingLatin letters again (KOI-7 N0), or forlowercase anduppercase switching. This version is also known asKOI7-switched akacsKOI7switched.^[2]^[3]

OnISO 2022 compatiblecomputer terminals KOI7-switched can be activated by the escape sequenceESC ( @ ESC ) N LS0.^[2]

KOI-7 was used on machines like theSM EVM (СМ ЭВМ) andDVK (ДВК); KOI-7 N2 was utilized in the machine-language of theЭлектроника Д3-28 [ru] (Elektronika D3-28) as four-digit hexadecimal code,БЭСМ-6 [ru] (BESM-6), where it was called ВКД, (internal data code). The encodings were also used onRSX-11,RT-11 and similar systems.^[4]

KOI-7 N0

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KOI-7 N0^[2] (КОИ-7 Н0^[1]) is identical to the IRV set inISO 646:1967.^[2] Compared toUS-ASCII, thedollar sign ("$") at code point 24 (_hex) was replaced by theuniversal currency sign "¤", but this was not maintained in all cases, in particular not after the fall of theIron Curtain. Likewise, the IRV set inISO/IEC 646:1991 also changed the character back to a dollar sign.

KOI-7 N0
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
0x	NUL	SOH	STX	ETX	EOT	ENQ	ACK	BEL	BS	HT	LF	VT	FF	CR	SO	SI
1x	DLE	DC1	DC2	DC3	DC4	NAK	SYN	ETB	CAN	EM	SUB	ESC	FS	GS	RS	US
2x	SP	!	"	#	¤/$	%	&	'	(	)	*	+	,	-	.	/
3x	0	1	2	3	4	5	6	7	8	9	:	;	<	=	>	?
4x	@	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
5x	P	Q	R	S	T	U	V	W	X	Y	Z	[	\	]	^	_
6x	`	a	b	c	d	e	f	g	h	i	j	k	l	m	n	o
7x	p	q	r	s	t	u	v	w	x	y	z	{	\|	}	~	DEL

KOI-7 N1

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KOI-7 N1 (КОИ-7 Н1^[1]) was first standardized in GOST 13052-67,^[5]^[6]^[7] and later also inISO 5427.^[2] It is sometimes referred to as "koi-0" as well.^[6]

Compared toASCII andISO 646 uppercase and lowercase letters are swapped in order to make it easier to recognize Russian text when presented using ASCII.^[6]

To trim the alphabet into chunks of 32 characters the dottedЁ/ë was dropped.^[6] In order to avoid conflicts with ASCII's and ISO 646's definition asDEL and its usage asEOF marker (-1) in some systems, it dropped the "CAPITAL HARD SIGN"Ъ that would have naturally resided at this location.^[6]

In a Bulgarian variant the unnecessary Russian "CAPITAL YERY"Ы at code point 121 was replaced by the "CAPITAL HARD SIGN" Ъ.^[6]

KOI-7 N1^[7]
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
0x	NUL	SOH	STX	ETX	EOT	ENQ	ACK	BEL	BS	HT	LF	VT	FF	CR	SO	SI
1x	DLE	DC1	DC2	DC3	DC4	NAK	SYN	ETB	CAN	EM	SUB	ESC	FS	GS	RS	US
2x	SP	!	"	#	¤/$	%	&	'	(	)	*	+	,	-	.	/
3x	0	1	2	3	4	5	6	7	8	9	:	;	<	=	>	?
4x	ю 044E	а 0430	б 0431	ц 0446	д 0434	е 0435	ф 0444	г 0433	х 0445	и 0438	й 0439	к 043A	л 043B	м 043C	н 043D	о 043E
5x	п 043F	я 044F	р 0440	с 0441	т 0442	у 0443	ж 0436	в 0432	ь 044C	ы 044B	з 0437	ш 0448	э 044D	щ 0449	ч 0447	ъ 044A
6x	Ю 042E	А 0410	Б 0411	Ц 0426	Д 0414	Е 0415	Ф 0424	Г 0413	Х 0425	И 0418	Й 0419	К 041A	Л 041B	М 041C	Н 041D	О 041E
7x	П 041F	Я 042F	Р 0420	С 0421	Т 0422	У 0423	Ж 0416	В 0412	Ь 042C	Ы/Ъ	З 0417	Ш 0428	Э 042D	Щ 0429	Ч 0427	DEL

KOI-7 N2

[edit]

KOI-7 N2 (КОИ-7 Н2^[1]), like KOI-7 N1, was also standardized in GOST 13052-67.^[7]

Kermit names itSHORT-KOI /short-koi.^[8]^[9]

KOI-7 N2^[7]^[9]
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
0x	NUL	SOH	STX	ETX	EOT	ENQ	ACK	BEL	BS	HT	LF	VT	FF	CR	SO	SI
1x	DLE	DC1	DC2	DC3	DC4	NAK	SYN	ETB	CAN	EM	SUB	ESC	FS	GS	RS	US
2x	SP	!	"	#	¤/$	%	&	'	(	)	*	+	,	-	.	/
3x	0	1	2	3	4	5	6	7	8	9	:	;	<	=	>	?
4x	@	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
5x	P	Q	R	S	T	U	V	W	X	Y	Z	[	\	]	↑/^	_
6x	Ю 042E	А 0410	Б 0411	Ц 0426	Д 0414	Е 0415	Ф 0424	Г 0413	Х 0425	И 0418	Й 0419	К 041A	Л 041B	М 041C	Н 041D	О 041E
7x	П 041F	Я 042F	Р 0420	С 0421	Т 0422	У 0423	Ж 0416	В 0412	Ь 042C	Ы 042B	З 0417	Ш 0428	Э 042D	Щ 0429	Ч 0427	DEL

References

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^^a ^b ^c ^dГОСТ 27463-87. Системы обработки информации. 7-битные кодированные наборы символов (с Изменением N 1) [GOST 27463-87. Information processing systems. 7-bit coded character sets] (in Russian). Госстандарт СССР. 1987-10-29.Archived from the original on 2016-12-03. Retrieved2016-12-02.
^^a ^b ^c ^d ^eSokolov, Michael (2004-01-23)."Charset name: KOI7-switched". International Free Computing Task Force (IFCTF).Archived from the original on 2016-12-03. Retrieved2016-12-02.
^Freed, Ned; Dürst, Martin, eds. (2013-12-20)."Character Sets". RFC2978.Archived from the original on 2016-12-03. Retrieved2016-12-03.
^Nechayev, Valentin (2013) [2001]."Review of 8-bit Cyrillic encodings universe".Archived from the original on 2016-12-05. Retrieved2016-12-05.
^Clews, John (1988).Language Automation Worldwide - The Development of Character Set Standards (1 ed.). Sesame Computer Projects.ISBN 1-87009501-4.
^^a ^b ^c ^d ^e ^fCzyborra, Roman (1998-11-30) [1998-05-25]."The Cyrillic Charset Soup".Archived from the original on 2016-12-03. Retrieved2016-12-03.[1][2][3][4]
^^a ^b ^c ^dHohlov, Yu. E."Cyrillic Information Representation in Electronic Form - Character Set (Code Page) Tables".Archived from the original on 2016-12-05. Retrieved2016-12-05.
^da Cruz, Frank (2010-04-02)."Kermit and MIME Character-Set Names".The Kermit Project.Columbia University, New York, USA.Archived from the original on 2016-12-03. Retrieved2016-12-02.
^^a ^b"SHORT KOI (KOI-7)".Kermit.Columbia University. Retrieved2020-06-24.

Kornai, Andras; Birnbaum, David J.; da Cruz, Frank; Davis, Bur; Fowler, George; Paine, Richard B.; Paperno, Slava; Simonsen, Keld J.; Thobe, Glenn E.; Vulis, Dimitri; van Wingen, Johan W. (1993-03-13)."CYRILLIC ENCODING FAQ Version 1.3". 1.3. Archived fromthe original on 2017-02-18. Retrieved2020-06-24.

Cyrillic encodings

Multilingual

ISO/IEC 8859-5
DOS
- 771
- 772/1119
- 855
  - €:872
- 866/900
  - €:808
- 885
Windows
Macintosh
- Cyrillic
  - 1283
  - 10007
- Ukrainian
  - 10017
EBCDIC
- DKOI
  - DKOI K1
  - DKOI K2
ISO-IR-111/KOI8-E
- KOI8-F
Multibyte

National

Russian	Morse MTK-2 GOST 10859 Academy of Science Main Alternative KOI-7 KOI-7 N0 KOI-7 N1 KOI-7 N2 KOI-8 KOI8-R 878/20866
East Slavic	1125 €:848 1131 €:849 KOI8-U 1168/21866 KOI8-RU 1167 Macintosh Ukrainian 10017
South Slavic	MIK YUSCII SLOSCII CROSCII SRPSCII MAKSCII
Other	Cornell KOI8-B KOI8-C (Caucasus and Central Asia) KOI8-K1 KOI8-O (Old) KOI8-T (Tajik) U-Code

v t e Character encodings
Early telecommunications	Telegraph code Needle Morse Non-Latin Wabun/Kana Chinese Cyrillic Baudot and Murray Fieldata ASCII ISO/IEC 646 BCDIC Teletex andVideotex/Teletext T.51/ISO/IEC 6937 ITU T.61 ITU T.101 World System Teletext background sets Transcode
ISO/IEC 8859	Approved parts -1 (Western Europe) -2 (Central Europe) -3 (Maltese/Esperanto) -4 (North Europe) -5 (Cyrillic) -6 (Arabic) -7 (Greek) -8 (Hebrew) -9 (Turkish) -10 (Nordic) -11 (Thai) -13 (Baltic) -14 (Celtic) -15 (New Western Europe) -16 (Romanian) Abandoned parts -12 (Devanagari) Proposed but not approved KOI-8 Cyrillic Sámi Adaptations Welsh Estonian Ukrainian Cyrillic
Bibliographic use	MARC-8 ANSEL CCCII/EACC ISO 5426 5426-2 5427 5428 6438 6862
National standards	ArmSCII Big5 BraSCII BSCII CNS 11643 DIN 66003 ELOT 927 GOST 10859 GB 2312 GB 12345 GB 12052 GB 18030 HKSCS ISCII JIS X 0201 JIS X 0208 JIS X 0212 JIS X 0213 KOI-7 KPS 9566 KS X 1001 KS X 1002 LST 1564 LST 1590-4 PASCII Shift JIS SI 960 TIS-620 TSCII VISCII VSCII YUSCII
ISO/IEC 2022	ISO/IEC 8859 ISO/IEC 10367 Extended Unix Code / EUC
Mac OSCode pages ("scripts")	Armenian Arabic Barents Cyrillic Celtic Central European Croatian Cyrillic Devanagari Farsi (Persian) Font X (Kermit) Gaelic Georgian Greek Gujarati Gurmukhi Hebrew Iceland Inuit Keyboard Latin (Kermit) Maltese/Esperanto Ogham Roman Romanian Sámi Turkish Turkic Cyrillic Ukrainian VT100
DOS code pages	437 737 850 858 861 862 863 864 865 866 867 868 869 899 904 932 936 942 949 950 951 1040 1043 1046 1098 1115 1116 1117 1118 1127 ABICOMP CS Indic CSX Indic CSX+ Indic CWI-2 Iran System Kamenický Mazovia MIK
IBM AIX code pages	895 896 912 915 921 922 1006 1008 1009 1010 1012 1013 1014 1015 1016 1017 1018 1019 1046 1133
Windows code pages	CER-GS 932 936 (GBK) 950 Extended Latin-8 1250 1251 1252 1253 1254 1255 1256 1257 1258 1270 Cyrillic + French Cyrillic + German Polytonic Greek
EBCDIC code pages	Japanese language in EBCDIC DKOI
DEC terminals (VTx)	Multinational (MCS) National Replacement (NRCS) French Canadian Swiss Spanish United Kingdom Dutch Finnish French Norwegian and Danish Swedish Norwegian and Danish (alternative) 8-bit Greek 8-bit Turkish SI 960 Hebrew Special Graphics Technical (TCS)
Platform specific	1052 1053 1054 1055 1058 Acorn RISC OS Amstrad CPC Apple II ATASCII Atari ST BICS Casio calculators CDC Compucolor 8001 Compucolor II CP/M+ DEC RADIX 50 DEC MCS/NRCS DG International Galaksija GEM GSM 03.38 HP Roman HP FOCAL HP RPL SQUOZE LICS LMBCS MSX NEC APC NeXT PETSCII PostScript Standard PostScript Latin 1 SAM Coupé Sega SC-3000 Sharp calculators Sharp MZ Sinclair QL Teletext TI calculators TRS-80 Ventura International WISCII XCCS ZX80 ZX81 ZX Spectrum
Unicode /ISO/IEC 10646	UTF-1 UTF-7 UTF-8 UTF-16 UTF-32 UTF-EBCDIC GB 18030 DIN 91379 BOCU-1 CESU-8 SCSU TACE16 Comparison of Unicode encodings
TeX typesetting system	Cork LY1 OML OMS OT1
Miscellaneous code pages	ABICOMP ASMO 449 Digital encoding of APL symbols ISO-IR-68 ARIB STD-B24 Fieldata HZ IEC-P27-1 INIS 7-bit 8-bit ISO-IR-169 ISO 2033 KOI KOI8-R KOI8-RU KOI8-U Mojikyō SEASCII Stanford/ITS Symbol TRON Unified Hangul Code
Control character	Morse prosigns C0 and C1 control codes ISO/IEC 6429 JIS X 0211 Unicode control, format and separator characters Whitespace characters
Related topics	CCSID Character encodings in HTML Charset detection Han unification Hardware code page MICR code Mojibake Variable-length encoding
Character sets