tailieunhanh - UNIT 2. FORMATS FOR ELECTRONIC DOCUMENTS AND IMAGES LESSON 7. CHARACTER ENCODING: LATIN AND NON-LATIN SCRIPTSNOTE

Probably you have at some time or another opened a web page only to find illegible text and meaningless characters. This is a problem connected to character encoding. Let’s try to understand the causes of this problem | Information Management Resource Kit Module on Management of Electronic Documents UNIT 2. FORMATS FOR ELECTRONIC DOCUMENTS AND IMAGES LESSON 7. CHARACTER ENCODING LATIN AND NON-LATIN SCRIPTS NOTE Please note that this PDF version does not have the interactive features offered through the IMARK courseware such as exercises with feedback pop-ups animations etc. We recommend that you take the lesson using the interactive courseware environment and use the PDF version for printing the lesson and to use as a reference after you have completed the course. FAO 2003 2. Formats for electronic documents and images - 7. Character encoding latin and non-latin scripts - page 1 Objectives At the end of this lesson you will be able to understand how to solve the main problems with character encoding. Character encoding Probably you have at some time or another opened a web page only to find illegible text and meaningless characters. This is a problem connected to character encoding. Let s try to understand the causes of this problem. 2. Formats for electronic documents and images - 7. Character encoding latin and non-latin scripts - page 2 Character encoding A 65 Character encoding is the organization of a set of numeric codes that represent all meaningful characters single letter digit space punctuation etc. of a script system in memory. Each character is stored in memory as a number. When a user enters characters the user s keypresses are converted to character codes when the characters are displayed on screen the character codes are converted to the glyphs of a font. Character encoding 205 In most character encoding standards the character set changes to represent the language being used so the upperlevel characters may include symbols accented Roman letters Cyrillic or other characters depending on the character encoding chosen. For example the character Ó in the Macintosh Standard Roman Character Set is in the same code point 205 as the equal sign in Windows extended ASCII .