ISO/IEC 8859-14:1998

Overview

ISO/IEC 8859-14:1998 - "Information technology - 8‑bit single‑byte coded graphic character sets - Part 14: Latin alphabet No. 8 (Celtic)" defines an 8‑bit, single‑byte character set of 191 coded graphic characters intended for data and text processing and information interchange. Often referred to as Latin alphabet No. 8 (Celtic), the set targets general office and textual applications across a range of languages including Irish, Scottish Gaelic, Welsh, Breton, Cornish, Manx and many Western European languages (Albanian, Basque, Catalan, Danish, Dutch, English, French*, German, Italian, Portuguese, Spanish, Swedish, etc.). The standard provides character names and Unicode (U+) identifiers for interoperation.

(*See Annex A.1 for French restrictions.)

Key topics and technical requirements

• 8‑bit single‑byte encoding: a single byte represents each graphic character; the code table contains 256 positions with 191 graphic characters specified.
• Non‑combining characters: characters in the set are not combining characters (no diacritic combining sequences are defined).
• Character names & Unicode mapping: each graphic character is assigned a unique name and identifier consistent with ISO/IEC 10646 (Unicode) code points.
• Control function interaction: characters may be used with coded control functions from ISO/IEC 6429, but control functions must not be used to create composite graphic symbols.
• Conformance rules: specification covers originating and receiving device responsibilities (device description, ability to transmit/receive the defined characters).
• ISO/IEC 2022 / ISO/IEC 4873 compliance: the set may be regarded as a version of an 8‑bit code according to ISO/IEC 2022 or ISO/IEC 4873 at level 1. It must not be used in conjunction with other parts of ISO/IEC 8859; if multiple parts are required, use equivalent sets from ISO/IEC 10367 within ISO/IEC 4873 level 2 or 3.
• Telematic services: not intended for direct use with ITU‑T Telematic services without meeting those services’ access‑point requirements.

Practical applications and users

• Software internationalization and localization for Celtic and Western European languages.
• Legacy system support and data interchange where 8‑bit encodings are required.
• Font designers, embedded device and terminal manufacturers implementing single‑byte character sets.
• Archivists and migration engineers converting legacy documents to Unicode-aware formats.
• Developers of converters, text processors, and communication equipment that must interoperate with ISO/IEC 8859 encodings.

Related standards

• ISO/IEC 2022 - character code structure and extension techniques
• ISO/IEC 4873 - 8‑bit code structure and implementation rules
• ISO/IEC 10367 - equivalent coded character sets for multi‑part use
• ISO/IEC 6429 - coded control functions
• ISO/IEC 10646 / Unicode - code point mappings and character names

Keywords: ISO/IEC 8859-14, Latin alphabet No. 8, Celtic, 8‑bit single‑byte, character encoding, legacy encoding, Unicode mapping, text processing, localization, ISO character set.