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ISO/IEC 10646:2020

Information technology — Universal coded character set (UCS)

Dec 21, 2020

General information

90.92     Jun 14, 2024

ISO/IEC

ISO/IEC JTC 1/SC 2

International Standard

35.040.10  

English  

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO/IEC 10646:2020
90.92 Standard to be revised
Jun 14, 2024

CORRIGENDA / AMENDMENTS

PUBLISHED
ISO/IEC 10646:2020/Amd 1:2023

PUBLISHED
ISO/IEC 10646:2020/Amd 2:2025

REVISED BY

PROJECT
ISO/IEC CD 10646.2

National adoptions

Information technology — Universal coded character set (UCS)

90.92   Standard to be revised

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