In this article, we delve into the interesting topic of KOI8-RU. Along these lines, we will explore the different aspects that make KOI8-RU a topic of relevance and interest today. From its origin and evolution, to its impact on society, we will thoroughly examine every facet of KOI8-RU. Likewise, we will analyze the implications that KOI8-RU has in various areas, highlighting its importance in the academic, cultural, social and technological fields. Through this exploration, we will seek to shed light on the nuances and complexities that characterize KOI8-RU, offering a comprehensive vision that allows the reader to understand its scope and relevance in the current context.
Language(s) | Belarusian, Ukrainian, Russian, Bulgarian |
---|---|
Classification | 8-bit KOI, extended ASCII |
Extends | KOI8-B |
Based on | KOI8-U, KOI8-R |
Other related encoding(s) | KOI8-E, KOI8-F |
KOI8-RU is an 8-bit character encoding, designed to cover Russian, Ukrainian, and Belarusian which use a Cyrillic alphabet. It is closely related to KOI8-R, which covers Russian and Bulgarian, but replaces ten box drawing characters with five Ukrainian and Belarusian letters Ґ, Є, І, Ї, and Ў in both upper case and lower case. It is even more closely related to KOI8-U, which does not include Ў but otherwise makes the same letter replacements. The additional letter allocations are matched by KOI8-E, except for Ґ which is added to KOI8-F.
In IBM, KOI8-RU is assigned code page/CCSID 1167.
KOI8 remains much more commonly used than ISO 8859-5, which never really caught on. Another common Cyrillic character encoding is Windows-1251. In the future, both may eventually give way to Unicode.
KOI8 stands for Kod obmena informatsiey, 8 bit (Russian: Код обмена информацией, 8 бит) which means "Code for Information Exchange, 8 bit".
The KOI8 character sets have the property that the Russian Cyrillic letters are in pseudo-Roman order rather than the natural Cyrillic alphabetical order as in ISO 8859-5. Although this may seem unnatural, it has the useful property that if the eighth bit is stripped, the text can still be read (or at least deciphered) in case-reversed transliteration on an ordinary ASCII terminal. For instance, "Русский Текст" in KOI8-RU becomes rUSSKIJ tEKST ("Russian Text") if the 8th bit is stripped.
The following table shows the KOI8-RU encoding. Each character is shown with its equivalent Unicode code point.
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
0x | ||||||||||||||||
1x | ||||||||||||||||
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 | { | | | } | ~ | |
8x | ─ 2500 |
│ 2502 |
┌ 250C |
┐ 2510 |
└ 2514 |
┘ 2518 |
├ 251C |
┤ 2524 |
┬ 252C |
┴ 2534 |
┼ 253C |
▀ 2580 |
▄ 2584 |
█ 2588 |
▌ 258C |
▐ 2590 |
9x | ░ 2591 |
▒ 2592 |
▓ 2593 |
“ 201C |
■ 25A0 |
∙ 2219 |
” 201D |
— 2014 |
№ 2116 |
™ 2122 |
NBSP | » 00BB |
® 00AE |
« 00AB |
· 00B7 |
¤ 00A4 |
Ax | ═ 2550 |
║ 2551 |
╒ 2552 |
ё 0451 |
є 0454 |
╔ 2554 |
і 0456 |
ї 0457 |
╗ 2557 |
╘ 2558 |
╙ 2559 |
╚ 255A |
╛ 255B |
ґ 0491 |
ў 045E |
╞ 255E |
Bx | ╟ 255F |
╠ 2560 |
╡ 2561 |
Ё 0401 |
Є 0404 |
╣ 2563 |
І 0406 |
Ї 0407 |
╦ 2566 |
╧ 2567 |
╨ 2568 |
╩ 2569 |
╪ 256A |
Ґ 0490 |
Ў 040E |
© 00A9 |
Cx | 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 |
Dx | 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 |
Ex | 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 |
Fx | 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 |
Ъ 042A |
Although RFC 2319 says that character 0x95 should be U+2219 (∙), it may also be U+2022 (•) to match the bullet character in Windows-1251.
Some references have a typo and incorrectly state that character 0xB4 is U+0403, rather than the correct U+0404. This typo is present in Appendix A of RFC 2319 (but the table in the main text of the RFC gives the correct mapping).