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1500 Unicode (on CD) Appendix K K.2 a) False. It encompasses the majority of the world s characters. b) False. The yyyy represents a hexadecimal number. c) False. A diacritic is a special mark added to a character to distinguish it from another letter or to indicate an accent. d) True. e) False. The escape sequence is denoted by uyyyy. EXERCISES K.3 Navigate to the Unicode Consortium Web site (www.unicode.org) and write the hexa decimal code values for the following characters. In which block were they located? a) Latin letter Z. b) Latin letter n with the tilde (~). c) Greek letter delta. d) Mathematical operator less than or equal to. e) Punctuation symbol open quote ( ). K.4 Describe the Unicode Standard design basis. K.5 Define the following terms: a) code value. b) surrogates. c) Unicode Standard. K.6 Define the following terms: a) UTF-8. b) UTF-16. c) UTF-32. K.7 Describe a scenario where it is optimal to store your data in UTF-16 format. K.8 Using the Unicode Standard code values, write a Java program that prints your first and last name. The program should print your name in all uppercase letters and in all lowercase letters. If you know other languages, print your first and last name in those languages as well.
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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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