ANSI INCITS ISO IEC 8859-11-2001 Information technology 8-bit single-byte coded graphic character sets Part 11 Latin Thai alphabet.pdf

1、INCITS/ISO/IEC 8859-11:20012008(ISO/IEC 8859-11:2001, IDT) Information technology 8-bit single-byte codedgraphic character sets Part 11: Latin/Thai alphabetINCITS/ISO/IEC 8859-11:20012008(ISO/IEC 8859-11:2001, IDT)INCITS/ISO/IEC 8859-11:20012008 ii ITIC 2008 All rights reserved PDF disclaimer This P

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4、PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Adopted by INCITS (InterNat

5、ional Committee for Information Technology Standards) as an American National Standard. Date of ANSI Approval: 7/2/2008 Published by American National Standards Institute, 25 West 43rd Street, New York, New York 10036 Copyright 2008 by Information Technology Industry Council (ITI). All rights reserv

6、ed. These materials are subject to copyright claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may b

7、e reproduced in any form, including an electronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America iiiContentsPageForeword . ivIntroduc

8、tion v1 Scope . 12 Conformance 13 Normative references .14 Terms and definitions . 25 Notation, code table and names . 26 Specification of the coded character set . 37 Identification of the character set 7Annex A Coverage of languages by parts 1 to 10 and13 to 16 of ISO/IEC 8859 . 8Bibliography . 10

9、INCITS/ISO/IEC 8859-11:20012008 ITIC 2008 All rights reservediv Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC particip

10、ate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental a

11、nd non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The

12、 main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies c

13、asting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO/IEC 8859 may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 8859-11 was prepared by Joint Technical Committee ISO/IEC

14、JTC 1, Information technology, Subcommittee SC 2, Coded character sets. ISO/IEC 8859 consists of the following parts, under the general title Information technology 8-bit single-byte coded graphic character sets: Part 1: Latin alphabet No. 1 Part 2: Latin alphabet No. 2 Part 3: Latin alphabet No. 3

15、Part 4: Latin alphabet No. 4 Part 5: Latin/Cyrillic alphabet Part 6: Latin/Arabic alphabet Part 7: Latin/Greek alphabet Part 8: Latin/Hebrew alphabet Part 9: Latin alphabet No. 5 Part 10: Latin alphabet No. 6 Part 11: Latin/Thai alphabet Part 13: Latin alphabet No. 7 Part 14: Latin alphabet No. 8 (C

16、eltic) Part 15: Latin alphabet No. 9 Part 16: Latin alphabet No. 10 Annex A of this part of ISO/IEC 8859 is for information only. INCITS/ISO/IEC 8859-11:20012008 ITIC 2008 All rights reservedvIntroduction ISO/IEC 8859 consists of several parts. Each part specifies a set ofup to 191 graphic character

17、s and the coded representation of thesecharacters by means of a single 8-bit byte. Each set is intended foruse for a particular group of languages.INCITS/ISO/IEC 8859-11:20012008 ITIC 2008 All rights reservedInformation technology 8-bit single-byte coded graphic character sets Part 11: Latin/Thai al

18、phabet1 ScopeThis part of ISO/IEC 8859 specifies a set of 183coded graphic characters identified as Latin/Thaialphabet.This set of coded graphic characters is intended foruse in data and text processing applications andalso for information interchange.The set contains graphic characters used for gen

19、eralpurpose applications in typical office environments inat least the following languages:Thai, English and Latin.Some of the characters in this set are combiningcharacters (see clause 6).This set of coded graphic characters may beregarded as a version of an 8-bit code according toISO/IEC 2022 or I

20、SO/IEC 4873 at level 1.This part of ISO/IEC 8859 may not be used inconjunction with any other parts of ISO/IEC 8859. Ifcoded characters from more than one part are to beused together, by means of code extensiontechniques, the equivalent coded character setsfrom ISO/IEC 10367 or their corresponding G

21、1 setsfrom ISO International Register of Coded CharacterSets to be used with escape sequences, should beused instead within a version of ISO/IEC 4873 atlevel 2 or level 3.The coded characters in this set may be used inconjunction with coded control functions selectedfrom ISO/IEC 6429. However, contr

22、ol functions arenot used to create composite graphic symbols fromtwo or more graphic characters (see clause 6).NOTE ISO/IEC 8859 is not intended for use withTelematic services defined by ITU-T. If information codedaccording to ISO/IEC 8859 is to be transferred to suchservices, it will have to confor

23、m to the requirements ofthose services at the access-point.2 Conformance2.1 Conformance of information interchangeA coded-character-data-element (CC-data-element)within coded information for interchange is inconformance with this part of ISO/IEC 8859 if all thecoded representations of graphic charac

24、ters withinthat CC-data-element conform to the requirementsof clause 6.2.2 Conformance of devicesA device is in conformance with this part of ISO/IEC8859 if it conforms to the requirements of 2.2.1, andeither or both of 2.2.2 and 2.2.3. A claim ofconformance shall identify the document whichcontains

25、 the description specified in 2.2.1.2.2.1 Device descriptionA device that conforms to this part of ISO/IEC 8859shall be the subject of a description that identifiesthe means by which the user may supply charactersto the device, or may recognize them when they aremade available to him, as specified r

26、espectively in2.2.2 and 2.2.3.2.2.2 Originating devicesAn originating device shall allow its user to supplyany sequence of characters from those specified inclause 6, and shall be capable of transmitting theircoded representations within a CC-data-element.2.2.3 Receiving devicesA receiving device sh

27、all be capable of receiving andinterpreting any coded representations of charactersthat are within a CC-data-element, and that conformto clause 6, and shall make the correspondingcharacters available to its user in such a way thatthe user can identify them from among thosespecified there, and can di

28、stinguish them from eachother.3 Normative referencesThe following normative documents containprovisions which, through reference in this text,constitute provisions of this part of ISO/IEC 8859.For dated references, subsequent amendments to,or revisions of, any of these publications do notapply. Howe

29、ver, parties to agreements based on thispart of ISO/IEC 8859 are encouraged to investigatethe possibility of applying the most recent editions ofthe normative documents indicated below. Forundated references, the latest edition of thenormative document referred to applies. Members ofISO and IEC main

30、tain registers of currently validInternational Standards.1AMERICAN NATIONAL STANDARD INCITS/ISO/IEC 8859-11:20012008 ITIC 2008 All rights reservedISO/IEC 2022:1994, Information technology Character code structure and extension techniquesISO/IEC 4873:1991, Information technology ISO 8-bit code for in

31、formation interchange Structure and rules for implementationISO/IEC 8824-1:1998, Information technology Abstract Syntax Notation One (ASN.1): Specifica-tion of basic notation4 TermsaandddefinitionsFor the purposes of this part of ISO/IEC 8859, thefollowing terms and definitions apply.4.1 bit combina

32、tion: An ordered set of bits usedfor the representation of characters.4.2 byte: A bit string that is operated upon as a unit.4.3 character: A member of a set of elementsused for the organization, control, or representationof data.4.4 code table: A table showing the charactersallocated to each bit co

33、mbination in a code.4.5 coded character set; code: A set ofunambiguous rules that establishes a character setand the one-to-one relationship between thecharacters of the set and their bit combinations.4.6 coded-character-data-element (CC-data-element): An element of interchanged informationthat is s

34、pecified to consist of a sequence of codedrepresentations of characters, in accordance withone or more identified standards for codedcharacter sets.4.7 graphic character: A character, other than acontrol function, that has a visual representationnormally handwritten, printed or displayed, and thatha

35、s a coded representation consisting of one ormore bit combinations.NOTE In ISO/IEC 8859 a single bit combination is usedto represent each character.4.8 graphic symbol: A visual representation of agraphic character or of a control function.4.9 position: That part of a code table identifiedby its colu

36、mn and row coordinates.5 Notation, code table and names5.1 NotationThe bits of the bit combinations of the 8-bit code areidentified by b8,b7,b6,b5,b4,b3,b2, and b1, whereb8is the highest-order, or most-significant bit and b1is the lowest-order, or least-significant bit.The bit combinations may be in

37、terpreted torepresent numbers in binary notation by attributingthe following weights to the individual bits:Using these weights, the bit combinations areBit b8b7b6b5b4b3b2b1Weight 128 64 32 16 8 4 2 1identified by notations of the form xx/yy, where xxand yy are numbers in the range 00 to 15. Thecorr

38、espondence between the notations of the formxx/yy and the bit combinations consisting of the bitsb8to b1is as follows: xx is the number represented by b8,b7,b6andb5where these bits are given the weights 8, 4, 2,and 1 respectively. yy is the number represented by b4,b3,b2andb1where these bits are giv

39、en the weights 8, 4, 2,and 1 respectively.The bit combinations are also identified by notationsof the form hk, where h and k are numbers in therange 0 to F in hexadecimal notation. The numberh is the same as the number xx described above,and the number k the same as the number yydescribed above.5.2

40、Layout of the code tableAn 8-bit code table consists of 256 positionsarranged in 16 columns and 16 rows. The columnsand the rows are numbered 00 to 15. In hexa-decimal notation the columns and the rows arenumbered 0 to F.The code table positions are identified by notationsof the form xx/yy, where xx

41、 is the column numberand yy is the row number. The column and rownumbers are shown at the top and left edges of thetable respectively. The code table positions arealso identified by notations of the form hk, where his the column number and k is the row number inhexadecimal notation. The column and r

42、ownumbers are shown at the bottom and right edges ofthe table respectively.The positions of the code table are in one-to-onecorrespondence with the bit combinations of thecode. The notation of a code table position, of theform xx/yy, or of the form hk, is the same as that ofthe corresponding bit com

43、bination.5.3 Names and meaningsThis part of ISO/IEC 8859 assigns a unique nameand a unique identifier to each graphic character.These names and identifiers have been taken fromISO/IEC 10646-1 (E). This part of ISO/IEC 88592 INCITS/ISO/IEC 8859-11:20012008 ITIC 2008 All rights reservedalso specifies

44、an acronym for each of the charactersSPACE, NO-BREAK SPACE and SOFT HYPHEN.For acronyms only Latin capital letters A to Z areused. It is intended that the acronyms be retained inall translations of the text.Except for SPACE (SP), NO-BREAK SPACE (NBSP)and SOFT HYPHEN (SHY), this part of ISO/IEC 8859d

45、oes not define and does not restrict the meanings ofgraphic characters.This part of ISO/IEC 8859 specifies a graphic symbolfor each graphic character. This symbol is shown inthe corresponding position of the code table.However, this part, or any other part, of ISO/IEC 8859does not specify a particul

46、ar style or font design forimaging graphic characters. Annex B of ISO/IEC10367 gives further information on this subject.5.3.1 SPACE (SP)A graphic character the visual representation of whichconsists of the absence of a graphic symbol.5.3.2 NO-BREAK SPACE (NBSP)A graphic character the visual represe

47、ntation of whichconsists of the absence of a graphic symbol, for usewhen a line break is to be prevented in the text aspresented.5.3.3 SOFT HYPHEN (SHY)A graphic character that is imaged by a graphicsymbol identical with, or similar to, that representingHYPHEN, for use when a line break has beenesta

48、blished within a word.6 Specification of the coded character setThis part of ISO/IEC 8859 specifies 183 charactersallocated to the bit combinations of the code table(table 2).Some of these characters are combining characters.They are identified in table 1 as such.NOTE Combining characters are descri

49、bed in ISO/IEC2022:1994 subclause 6.3.3.Control functions, such as BACKSPACE orCARRIAGE RETURN, shall not be used to createcomposite graphic symbols, which are made up fromthe graphic representations of two or more characters.6.1 Characters of the set and their codedrepresentationSee table 1.3INCITS/ISO/IEC 8859-11:20012008 IT