KOI-7

KOI7 is a 7-bit character encoding, designed to cover Russian, which uses the Cyrillic alphabet.

In Russian, KOI7 stands for Kod Obmena Informatsiey, 7 bit (Код Обмена Информацией, 7 бит) which means "Code for Information Exchange, 7 bit".

Shift Out (SO) and Shift In (SI) control characters are used in KOI7, where SO starts printing Russian letters, and SI starts printing Latin letters again, or for lowercase and uppercase switching.

Codepage layout

KOI7
	—0	—1	—2	—3	—4	—5	—6	—7	—8	—9	—A	—B	—C	—D	—E	—F
0_	Template:Chset-color-ctrl|NUL 0000 0	Template:Chset-color-ctrl|SOH 0001 1	Template:Chset-color-ctrl|STX 0002 2	Template:Chset-color-ctrl|ETX 0003 3	Template:Chset-color-ctrl|EOT 0004 4	Template:Chset-color-ctrl|ENQ 0005 5	Template:Chset-color-ctrl|ACK 0006 6	Template:Chset-color-ctrl|BEL 0007 7	Template:Chset-color-ctrl|BS 0008 8	Template:Chset-color-ctrl|HT 0009 9	Template:Chset-color-ctrl|LF 000A 10	Template:Chset-color-ctrl|VT 000B 11	Template:Chset-color-ctrl|FF 000C 12	Template:Chset-color-ctrl|CR 000D 13	Template:Chset-color-ctrl|SO 000E 14	Template:Chset-color-ctrl|SI 000F 15
1_	Template:Chset-color-ctrl|DLE 0010 16	Template:Chset-color-ctrl|DC1 0011 17	Template:Chset-color-ctrl|DC2 0012 18	Template:Chset-color-ctrl|DC3 0013 19	Template:Chset-color-ctrl|DC4 0014 20	Template:Chset-color-ctrl|NAK 0015 21	Template:Chset-color-ctrl|SYN 0016 22	Template:Chset-color-ctrl|ETB 0017 23	Template:Chset-color-ctrl|CAN 0018 24	Template:Chset-color-ctrl|EM 0019 25	Template:Chset-color-ctrl|SUB 001A 26	Template:Chset-color-ctrl|ESC 001B 27	Template:Chset-color-ctrl|FS 001C 28	Template:Chset-color-ctrl|GS 001D 29	Template:Chset-color-ctrl|RS 001E 30	Template:Chset-color-ctrl|US 001F 31
2_	Template:Chset-color-punct|SP 0020 32	Template:Chset-color-punct|! 0021 33	Template:Chset-color-punct|" 0022 34	Template:Chset-color-punct|# 0023 35	Template:Chset-color-punct|$ 0024 36	Template:Chset-color-punct|% 0025 37	Template:Chset-color-punct|& 0026 38	Template:Chset-color-punct|' 0027 39	Template:Chset-color-punct|( 0028 40	Template:Chset-color-punct|) 0029 41	Template:Chset-color-punct|* 002A 42	Template:Chset-color-punct|+ 002B 43	Template:Chset-color-punct|, 002C 44	Template:Chset-color-punct|- 002D 45	Template:Chset-color-punct|. 002E 46	Template:Chset-color-punct|/ 002F 47
3_	Template:Chset-color-digit|0 0030 48	Template:Chset-color-digit|1 0031 49	Template:Chset-color-digit|2 0032 50	Template:Chset-color-digit|3 0033 51	Template:Chset-color-digit|4 0034 52	Template:Chset-color-digit|5 0035 53	Template:Chset-color-digit|6 0036 54	Template:Chset-color-digit|7 0037 55	Template:Chset-color-digit|8 0038 56	Template:Chset-color-digit|9 0039 57	Template:Chset-color-punct|: 003A 58	Template:Chset-color-punct|; 003B 59	Template:Chset-color-punct|< 003C 60	Template:Chset-color-punct|= 003D 61	Template:Chset-color-punct|> 003E 62	Template:Chset-color-punct|? 003F 63
4_	Template:Chset-color-punct|@ 0040 64	Template:Chset-color-alpha|A 0041 65	Template:Chset-color-alpha|B 0042 66	Template:Chset-color-alpha|C 0043 67	Template:Chset-color-alpha|D 0044 68	Template:Chset-color-alpha|E 0045 69	Template:Chset-color-alpha|F 0046 70	Template:Chset-color-alpha|G 0047 71	Template:Chset-color-alpha|H 0048 72	Template:Chset-color-alpha|I 0049 73	Template:Chset-color-alpha|J 004A 74	Template:Chset-color-alpha|K 004B 75	Template:Chset-color-alpha|L 004C 76	Template:Chset-color-alpha|M 004D 77	Template:Chset-color-alpha|N 004E 78	Template:Chset-color-alpha|O 004F 79
5_	Template:Chset-color-alpha|P 0050 80	Template:Chset-color-alpha|Q 0051 81	Template:Chset-color-alpha|R 0052 82	Template:Chset-color-alpha|S 0053 83	Template:Chset-color-alpha|T 0054 84	Template:Chset-color-alpha|U 0055 85	Template:Chset-color-alpha|V 0056 86	Template:Chset-color-alpha|W 0057 87	Template:Chset-color-alpha|X 0058 88	Template:Chset-color-alpha|Y 0059 89	Template:Chset-color-alpha|Z 005A 90	Template:Chset-color-punct|[ 005B 91	Template:Chset-color-punct|\ 005C 92	Template:Chset-color-punct|] 005D 93	Template:Chset-color-punct|^ 005E 94	Template:Chset-color-punct|_ 005F 95
6_	Template:Chset-color-intl |Ю 042E 96	Template:Chset-color-intl |А 0410 97	Template:Chset-color-intl |Б 0411 98	Template:Chset-color-intl |Ц 0426 99	Template:Chset-color-intl |Д 0414 100	Template:Chset-color-intl |Е 0415 101	Template:Chset-color-intl |Ф 0424 102	Template:Chset-color-intl |Г 0413 103	Template:Chset-color-intl |Х 0425 104	Template:Chset-color-intl |И 0418 105	Template:Chset-color-intl |Й 0419 106	Template:Chset-color-intl |К 041A 107	Template:Chset-color-intl |Л 041B 108	Template:Chset-color-intl |М 041C 109	Template:Chset-color-intl |Н 041D 110	Template:Chset-color-intl |О 041E 111
7_	Template:Chset-color-intl |П 041F 112	Template:Chset-color-intl |Я 042F 113	Template:Chset-color-intl |Р 0420 114	Template:Chset-color-intl |С 0421 115	Template:Chset-color-intl |Т 0422 116	Template:Chset-color-intl |У 0423 117	Template:Chset-color-intl |Ж 0416 118	Template:Chset-color-intl |В 0412 119	Template:Chset-color-intl |Ь 042C 120	Template:Chset-color-intl |Ы 042B 121	Template:Chset-color-intl |З 0417 122	Template:Chset-color-intl |Ш 0428 123	Template:Chset-color-intl |Э 042D 124	Template:Chset-color-intl |Щ 0429 125	Template:Chset-color-intl |Ч 0427 126	Template:Chset-color-ctrl |DEL 007F 127

The dollar sign character ("$" hex 24), however, was often replaced with the universal currency sign "¤" in Soviet computers. A popular legend has it that this was to demonstrate independence of the American-dominated computer industry — which was ironic, since a significant number of Soviet computers were actually implementations of various American designs.

See also

• KOI8-R
• KOI8-U
• Windows-1251