By Richard Gillam

Unicode presents a special quantity for each personality a working laptop or computer bargains with, it doesn't matter what platform, what software or what language. this article presents a hands-on programmer's consultant to Unicode. It bargains particular counsel on integrating Unicode with different applied sciences, together with Java.

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A Brief History of Character Encoding To understand Unicode fully, it's helpful to have a good sense of where we came from and what the whole business of character encoding involves. Unicode didn't just spring fully grown from the forehead of Zeus; it's the latest step in a history that actually predates the digital computer, having its roots in telecommunications. Unicode is not the first attempt to solve the problem it addresses, and Unicode is also in its third major revision. 0, it's useful to understand what worked and what didn't work in Unicode's many predecessors.

ASCII-1963 didn't officially include the lowercase letters, although it had a big undefined space where they would later go, and it featured some weird placements, such as a few control codes in the printing-character range. These problems were fixed in ASCII-1967, which is more or less the ASCII we all know and love today. It standardized the meanings of some of the control codes that were left open in ASCII-1963, moved all of the control codes (except for DEL) into the control-code area, and added the lowercase letters and some special programming-language symbols.

Johab is an alternative encoding scheme described in the KS X 1001 standard. KS X 1001 normally encodes only the 2,350 Hangul syllables (see Chapter 10 for more on Hangul) actually used in modern Korean, but it proposes an alternative method that permits encoding of all 11,172 possible modern Hangul syllables. ) Johab takes advantage of the alphabetic nature of Hangul. Instead of just giving each syllable an arbitrary number, the syllable is broken down into its component letters, or jamo (as many as three in a syllable), each of which can be encoded in five bits.

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