Information technology — Universal coded character set (UCS)

Amended by

ISO/IEC 10646:2020/Amd 1:2023

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

27-05-2024

Language(s)

English

Published date

21-12-2020

Publisher

International Organization for Standardization

This document

specifies the architecture of the UCS;
defines terms used for the UCS;
describes the general structure of the UCS codespace;
specifies the assigned planes of the UCS: the Basic Multilingual Plane (BMP) of the UCS, the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP);
defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale;
specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace;
specifies the coded representations for control characters and private use characters;
specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32;
specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE;
specifies the management of future additions to this coded character set.

NOTE The determination of suitability of these characters for use as identifiers in programming languages is not specified by this document but can be found in an external reference. See Annex U.

Committee	ISO/IEC JTC 1/SC 2
DocumentType	Standard
Pages	2804
PublisherName	International Organization for Standardization
Status	Superseded
SupersededBy	ETSI TS 144 057 V18.0.0:2024-05
Supersedes	ISO/IEC 10646:2017/Amd 2:2019 ISO/IEC 10646:2017 ISO/IEC 10646:2017/Amd 1:2019

Standards	Relationship
NS-ISO/IEC 10646:2020	Identical
NEN-ISO/IEC 10646:2021	Identical

ETSI TS 127 007 V17.8.0:2023-01	Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; AT command set for User Equipment (UE) (3GPP TS 27.007 version 17.8.0 Release 17)
ETSI TS 127 007 V17.9.0:2023-07	Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; AT command set for User Equipment (UE) (3GPP TS 27.007 version 17.9.0 Release 17)
ETSI TS 123 038 V18.0.0:2024-05	Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Alphabets and language-specific information (3GPP TS 23.038 version 18.0.0 Release 18)