Unicode - Definitions from Dictionary.com

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'nĭ-kōd') Pronunciation Key
A computer standard for encoding characters. Each character is represented by sixteen bits. Whereas ASCII, being an 8-bit encoding scheme, can only represent 256 characters, Unicode has 65,536 combinations, enabling it to encode the letters of all written languages as well as thousands of characters in languages such as Japanese and Chinese.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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Unicode

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Free On-line Dictionary of Computing - Cite This Source - Share This

Unicode
1. A 16-bit character set standard, designed and maintained by the non-profit consortium Unicode Inc.
Originally Unicode was designed to be universal, unique, and uniform, i.e., the code was to cover all major modern written languages (universal), each character was to have exactly one encoding (unique), and each character was to be represented by a fixed width in bits (uniform).
Parallel to the development of Unicode an ISO/IEC standard was being worked on that put a large emphasis on being compatible with existing character codes such as ASCII or ISO Latin 1. To avoid having two competing 16-bit standards, in 1992 the two teams compromised to define a common character code standard, known both as Unicode and BMP.
Since the merger the character codes are the same but the two standards are not identical. The ISO/IEC standard covers only coding while Unicode includes additional specifications that help implementation.
Unicode is not a glyph encoding. The same character can be displayed as a variety of glyphs, depending not only on the font and style, but also on the adjacent characters. A sequence of characters can be displayed as a single glyph or a character can be displayed as a sequence of glyphs. Which will be the case, is often font dependent.
See also J�rgen Bettels and F. Avery Bishop's paper A universal character code (http://research.compaq.com/wrl/DECarchives/DTJ/DTJB02/DTJB02SC.TXT).
(2002-08-06)
2. A pre-Fortran on the IBM 1130, similar to MATH-MATIC.
[Sammet 1969, p.137].
(2004-09-14)