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Appendix K Unicode (on CD) 1499 To obtain more information about the Unicode Standard and the Unicode Consortium, visit www.unicode.org. It contains a link to the code charts, which contain the 16-bit code values for the currently encoded characters. Numerous programming languages provide some level of support for the Unicode Standard. In Java programs, the uyyyy escape sequence represents a character, where yyyy is the four-digit hexadecimal code value. The u0020 escape sequence is the universal encoding for the space character. TERMINOLOGY uyyyy escape sequence portability ASCII script block surrogate character symbol character set unambiguous (Unicode design basis) code value Unicode Consortium diacritic Unicode design basis double-byte character set (DBCS) Unicode Standard efficient (Unicode design basis) Unicode Transformation Format (UTF) encode uniform (Unicode design basis) escape sequence universal (Unicode design basis) glyph UTF-8 hexadecimal notation UTF-16 localization UTF-32 multi-byte character set (MBCS) SELF-REVIEW EXERCISES K.1 Fill in the blanks in each of the following. a) Global software developers had to their products to a specific market before distribution. b) The Unicode Standard is an standard that facilitates the uniform production and distribution of software products. c) The four design basis that constitute the Unicode Standard are: , , and . d) A is the smallest written component the can be represented with a numeric value. e) Software that can execute on different operating systems is said to be . K.2 State whether each of the following is true or false. If false, explain why. a) The Unicode Standard encompasses all the world s characters. b) A Unicode code value is represented as U+yyyy, where yyyy represents a number in bi nary notation. c) A diacritic is a character with a special mark that emphasizes an accent. d) Unicode is portable. e) When designing Java programs, the escape sequence is denoted by/uyyyy. SELF-REVIEW ANSWERS K.1 a) localize. b) encoding. c) universal, efficient, uniform, unambiguous. d) character. e) portable.
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