KS X 1002 explained

KS X 1002
Alias:	KS C 5657
Standard:	KS X 1002
Lang:	Intended to be used alongside KS X 1001 for Korean support. Does not substantially support any language on its own.
Status:	Unihan source. Not usually encoded directly.
Encodings:	Theoretically ISO 2022, but has no ISO-IR registration (and thus no standardised escape sequence) and is not included in any EUC code.
Otherrelated:	Intended to supplement: Other supplementary ISO 2022 CJK DBCSes:

KS X 1002 (formerly KS C 5657) is a South Korean character set standard established in order to supplement KS X 1001. It consists of a total of 7,649 characters.

Unlike KS X 1001, KS X 1002 is not encoded in any legacy encoding. Even in 1994, it was known as "a standard that no one implemented".^[1]

Characters

Characters in KS X 1002 are arranged in a 94×94 grid (as in ISO/IEC 2022), and the two-byte code point of each character is expressed in the haeng-yeol form, which specifies a row (haeng Korean: 행) and the position of the character within the row (cell, yeol Korean: 열).

The rows (numbered from 1 to 94) contain characters as follows:^[2]

01–07: Latin letters with diacritics (613 characters)
08–10: Greek letters with diacritics (273 characters)
11–13: miscellaneous symbols (275 characters)
14: compound jamo and Hangul syllables without an initial consonant (27 characters)
16–36: modern Hangul syllables (1,930 characters)
37–54: archaic Hangul syllables (1,675 characters)
55–85: Hanja (2,856 characters)

The rows 15 and 86–94 are unassigned.

Impact on Unicode

KS X 1002 is one of the sources of the CJK Unified Ideographs block in Unicode.^[3] ^[4]

In Unicode 1.1, the characters at U+3D2E–U+44B7 were from rows 16–36 of KS X 1002.^[5] ^[6] ^[7] ^[8] However, they were deleted and superseded by the new Hangul Syllables block (U+AC00–U+D7AF) in Unicode 2.0.

Precomposed modern Hangul sets (rows number 16 through 36)

Statistics by jamo

Initial consonants

Jamo	Count
ㄱ	104
ㄲ	94
ㄴ	114
ㄷ	117
ㄸ	89
ㄹ	102
ㅁ	114
ㅂ	120
ㅃ	60
ㅅ	103
ㅆ	126
ㅇ	102
ㅈ	110
ㅉ	124
ㅊ	87
ㅋ	90
ㅌ	96
ㅍ	86
ㅎ	92
Total	1930

Vowels

Jamo	Count
ㅏ	100
ㅐ	57
ㅑ	99
ㅒ	47
ㅓ	86
ㅔ	83
ㅕ	109
ㅖ	109
ㅗ	98
ㅘ	94
ㅙ	85
ㅚ	85
ㅛ	92
ㅜ	73
ㅝ	121
ㅞ	132
ㅟ	70
ㅠ	78
ㅡ	98
ㅢ	123
ㅣ	91
Total	1930

Final consonants

Jamo	Count
(none)	50
ㄱ	152
ㄲ	28
ㄳ	13
ㄴ	97
ㄵ	7
ㄶ	18
ㄷ	267
ㄹ	104
ㄺ	47
ㄻ	26
ㄼ	30
ㄽ	52
ㄾ	1
ㄿ	13
ㅀ	34
ㅁ	137
ㅂ	146
ㅄ	12
ㅅ	155
ㅆ	96
ㅇ	124
ㅈ	46
ㅊ	48
ㅋ	46
ㅌ	68
ㅍ	64
ㅎ	49
Total	1930

External links

KS X 1002 (in Korean; click the Korean: 표준원문보기 button to view the standard document)
KS X 1002 on Charset Wiki (in Korean)

Notes and References

Web site: Unicode Technical Committee Meeting #62: Discussion of Korean Hangul Proposal . Presentation by T.J. Kang on Unicode in Korea . 1994-09-30 .
Book: Lunde , Ken . CJKV Information Processing: Chinese, Japanese, Korean & Vietnamese Computing . Ken Lunde . 2009 . 2nd . . . 978-0-596-51447-1 . 147–148 .
Web site: Unihan_IRGSources.txt (from Unihan.zip) . 2020-02-19. 2020-09-28.
Web site: UAX #38: Unicode Han Database (Unihan). Unicode Consortium. 2020-03-05.
Web site: Unicode 1.1.5 data . U+3D2E–U+44B7 . 1995-07-05 .
Web site: Korean Hangul Encoding Conversion Table . K. D. . Chang . In Sook . Choi . Jung Ho . Kim . 1995-10-04 .
Web site: Notes and corrections for HANGUL.TXT . 2005-10-13 .
Web site: Informative document about three pre-Unicode-2.0 modern hangul syllables . Jaemin . Chung . 2017-03-29 .