Appendix A Unicode

Appendix A Unicode

Appendix A unified character encoding standard

(Unicode/? ju?n?? K??   D/N.A character set for all languages uniform character encoding standard. )

computers  use numbers. They store characters by assign ing a number for each of the other. The original coding system is called ASCII (Amnerican Standard code for Inforamtion Interchange) and had 127 numbers (0 t o 127) Each stored as a 7-bit number. ASCII could satisfactorily handle lowercase and uppercase letters, Digits, punctuation characters, and some control characters. An attempt is made to extended the ASCII character set to 8 bits. The new code, which is called Extended ASCII, was never internationally standardized. 

To overcome the difficulties inherent in ASCII and Extended ASCII, the Unicode Consortium (a group of multilingual software manufacturers) created a universal encoding system to provide a comprehensive charac ter set called Unicode.

Unicode was originally a 2-byte character set. Unicode version 3, however, is a 4-byte code and was fully compatibles with ASCII and Extended ASCII. The ASCII set, which is now called Basic Latin, are Unicode with the upper-bit set to zero. Extended ASCII, which is now called Latin-1, was Unicode with the-upper bits set to zero. Figure A. 1 shows how the different systems is compatible.

Computers use numbers. They store characters by assigning a number to each other.  The first coding system is called ASCII (American Standard Information Interchange Code), each of which is stored with 127 bits, as a number. ASCII handles uppercase and lowercase letters, numbers, punctuation characters satisfactorily. Attempt to extend the ASCII character to 8 bits. The new code, called extended ASCII, has never been internationally standardized.

In order to overcome the difficulties in ASCII and extended ASCII, the unified Character encoding standard Consortium (an organization for multilingual software developers) has created a universal coding system that provides an understandable character set called the unified character encoding standard.

The unified character encoding standard was originally a 2-byte character set. The unified character encoding standard Version 3, however, is a 4-byte encoding and is fully compatible with ASCII and extended ASCII.

　　(Assign/? ')  Sa?n/vt. If you assign a particular function or value to someone or something, you said they has it. To give (a function or value);

Satisfactorily/,s?t?s ' F?kt?r?l?  /Adv. satisfactory;

Punctuation/p?? (k) t?? ' E?? (?) n/n. The marks used to divide a piece of writing into sentence, phrases etc. punctuation,

Inherent/? n ' H?? R (?)  Nt/adj.  A qualilty that's inherent in something are a natural part of it and cannot being separated from it. Innate, intrinsic, innate.

Consortium/k?n ' s?? T??  m/n.  A consortium is a group people or firms who has agreed to cooperate with each other. Union

Multilingual/m?lt? ' L?? GW (?)  L/adj. Multilingual means involving several different languages. Multi-lingual;

Manufacturer//, M?nj? ' F?kt? (?) R? (r)/N. A company, makes large quantities of goods. Manufacturers, manufacturing companies, factories;

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Appendix A Unicode