Unicode Tutorials - Herong's Tutorial Examples - v5.32, by Herong Yang
Unique Features of Unicode
This section provides summary of unique features of the Unicode standard.
Comparing with other character coding standard, Unicode has the following unique features:
Another interesting feature of Unicode is the use of equivalent sequences. Different sequences of code elements that represent the same semantic value are called equivalent sequences. For example, the small letter "a" and the circumflex accent "^" can be represented by a single code element: U+00E2 (LATIN SMALL LETTER A WITH CIRCUMFLEX). It can also be represented by a sequence of two code elements: U+0302 (COMBINING CIRCUMFLEX ACCENT) and U+0061 (LATIN SMALL LETTER A). So U+00E2 and U+0302U+0061 are equivalent sequences. See the demonstration table below:
1. U+00E2 = â 2. U+0302U+0061 = ̂a 3. U+0061U+0302 = â 4. U+0061U+0302U+0062 = âb 5. U+0062U+0302U+0061 = b̂a 6. U+0062U+0302U+0066 = b̂b
The above table shows how a Web browser handles a sequence that has a "combining" element:
Note that when send the same table to a PDF generation tool, "combining" sequences may not be respected.
Table of Contents
ASCII Character Set and Encoding
GB2312 Character Set and Encoding
GB18030 Character Set and Encoding
JIS X0208 Character Set and Encodings
Examples of Unicode Characters
Unicode 13.0 Character Samples
UTF-8 (Unicode Transformation Format - 8-Bit)
UTF-16, UTF-16BE and UTF-16LE Encodings
UTF-32, UTF-32BE and UTF-32LE Encodings
Python Language and Unicode Characters
Java Language and Unicode Characters
Encoding Conversion Programs for Encoded Text Files
Using Notepad as a Unicode Text Editor
Using Microsoft Word as a Unicode Text Editor