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Unicode Formatting Code Points
Unicode or ''The Unicode Standard'' or TUS is a character encoding standard maintained by the Unicode Consortium designed to support the use of text in all of the world's writing systems that can be digitized. Version 16.0 defines 154,998 characters and 168 scripts used in various ordinary, literary, academic, and technical contexts. Unicode has largely supplanted the previous environment of a myriad of incompatible character sets used within different locales and on different computer architectures. The entire repertoire of these sets, plus many additional characters, were merged into the single Unicode set. Unicode is used to encode the vast majority of text on the Internet, including most web pages, and relevant Unicode support has become a common consideration in contemporary software development. Unicode is ultimately capable of encoding more than 1.1 million characters. The Unicode character repertoire is synchronized with ISO/IEC 10646, each being code-for-code ident ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Universal Coded Character Set
The Universal Coded Character Set (UCS, Unicode) is a standard set of character (computing), characters defined by the international standard International Organization for Standardization, ISO/International Electrotechnical Commission, IEC 10646, ''Information technology — Universal Coded Character Set (UCS)'' (plus amendments to that standard), which is the basis of many character encodings, improving as characters from previously unrepresented writing systems are added. The UCS has over 1.1 million possible code points available for use/allocation, but only the first 65,536, which is the Basic Multilingual Plane (BMP), had entered into common use before 2000. This situation began changing when the People's Republic of China (PRC) ruled in 2006 that all software sold in its jurisdiction would have to support GB 18030. This required software intended for sale in the PRC to move beyond the BMP. The system deliberately leaves many code points not assigned to characters, ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Character Sets
Character encoding is the process of assigning numbers to graphical character (computing), characters, especially the written characters of human language, allowing them to be stored, transmitted, and transformed using computers. The numerical values that make up a character encoding are known as code points and collectively comprise a code space or a code page. Early character encodings that originated with optical or electrical telegraphy and in early computers could only represent a subset of the characters used in written languages, sometimes restricted to Letter case, upper case letters, Numeral system, numerals and some punctuation only. Over time, character encodings capable of representing more characters were created, such as ASCII, the ISO/IEC 8859 encodings, various computer vendor encodings, and Unicode encodings such as UTF-8 and UTF-16. The Popularity of text encodings, most popular character encoding on the World Wide Web is UTF-8, which is used in 98.2% of surve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Glyph
A glyph ( ) is any kind of purposeful mark. In typography, a glyph is "the specific shape, design, or representation of a character". It is a particular graphical representation, in a particular typeface, of an element of written language. A grapheme, or part of a grapheme (such as a diacritic), or sometimes several graphemes in combination (a composed glyph) can be represented by a glyph. Glyphs, graphemes and characters In modern English, symbols like letters and numerical digits are each both single graphemes and single glyphs. In most languages written in any variety of the Latin alphabet except English, the use of diacritics to signify a sound mutation is common. For example, the grapheme requires two glyphs: the basic and the grave accent . In general, a diacritic is regarded as a glyph, even if it is contiguous with the rest of the character like a cedilla in French, Catalan or Portuguese, the ogonek in several languages, or the stroke on a Polish . Altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Grapheme
In linguistics, a grapheme is the smallest functional unit of a writing system. The word ''grapheme'' is derived from Ancient Greek ('write'), and the suffix ''-eme'' by analogy with ''phoneme'' and other emic units. The study of graphemes is called '' graphemics''. The concept of graphemes is abstract and similar to the notion in computing of a character. (A specific geometric shape that represents any particular grapheme in a given typeface is called a glyph.) Conceptualization There are two main opposing grapheme concepts. In the so-called ''referential conception'', graphemes are interpreted as the smallest units of writing that correspond with sounds (more accurately phonemes). In this concept, the ''sh'' in the written English word ''shake'' would be a grapheme because it represents the phoneme /ʃ/. This referential concept is linked to the ''dependency hypothesis'' that claims that writing merely depicts speech. By contrast, the ''analogical concept'' defines gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Latin Character
The Latin script, also known as the Roman script, is a writing system based on the letters of the classical Latin alphabet, derived from a form of the Greek alphabet which was in use in the ancient Greek city of Cumae in Magna Graecia. The Greek alphabet was altered by the Etruscans, and subsequently their alphabet was altered by the Ancient Romans. Several Latin-script alphabets exist, which differ in graphemes, collation and phonetic values from the classical Latin alphabet. The Latin script is the basis of the International Phonetic Alphabet (IPA), and the 26 most widespread letters are the letters contained in the ISO basic Latin alphabet, which are the same letters as the English alphabet. Latin script is the basis for the largest number of alphabets of any writing system and is the most widely adopted writing system in the world. Latin script is used as the standard method of writing the languages of Western and Central Europe, most of sub-Saharan Africa, the Americas, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Mojibake
Mojibake (; , 'character transformation') is the garbled or gibberish text that is the result of text being decoded using an unintended character encoding. The result is a systematic replacement of symbols with completely unrelated ones, often from a different writing system. This display may include the generic Specials (Unicode block)#Replacement character, replacement character in places where the binary code, binary representation is considered invalid. A replacement can also involve multiple consecutive symbols, as viewed in one encoding, when the same binary code constitutes one symbol in the other encoding. This is either because of differing constant length encoding (as in Asian 16-bit encodings vs European 8-bit encodings), or the use of variable length encodings (notably UTF-8 and UTF-16). Failed rendering of glyphs due to either missing fonts or missing glyphs in a font is a different issue that is not to be confused with mojibake. Symptoms of this failed rendering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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ASCII
ASCII ( ), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English language focused) printable character, printable and 33 control character, control characters a total of 128 code points. The set of available punctuation had significant impact on the syntax of computer languages and text markup. ASCII hugely influenced the design of character sets used by modern computers; for example, the first 128 code points of Unicode are the same as ASCII. ASCII encodes each code-point as a value from 0 to 127 storable as a seven-bit integer. Ninety-five code-points are printable, including digits ''0'' to ''9'', lowercase letters ''a'' to ''z'', uppercase letters ''A'' to ''Z'', and commonly used punctuation symbols. For example, the letter is represented as 105 (decimal). Also, ASCII specifies 33 non-printing control codes which originated with ; most of which are now obsolete. The control cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Comparison Of Unicode Encodings
This article compares Unicode encodings in two types of environments: 8-bit clean environments, and environments that forbid the use of byte values with the high bit set. Originally, such prohibitions allowed for links that used only seven data bits, but they remain in some standards, so some standard-conforming software must generate messages that comply with the restrictions. The Standard Compression Scheme for Unicode and the Binary Ordered Compression for Unicode are excluded from the comparison tables because it is difficult to simply quantify their size. Compatibility issues A UTF-8 file that contains only ASCII characters is identical to an ASCII file. Legacy programs can generally handle UTF-8-encoded files, even if they contain non-ASCII characters. For instance, the C printf function can print a UTF-8 string because it only looks for the ASCII '%' character to define a formatting string. All other bytes are printed unchanged. UTF-16 and UTF-32 are incompatible ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Emoji
An emoji ( ; plural emoji or emojis; , ) is a pictogram, logogram, ideogram, or smiley embedded in text and used in electronic messages and web pages. The primary function of modern emoji is to fill in emotional cues otherwise missing from typed conversation as well as to replace words as part of a logographic system. Emoji exist in various genres, including facial expressions, expressions, activity, food and drinks, celebrations, flags, objects, symbols, places, types of weather, animals, and nature. Originally meaning pictograph, the word ''emoji'' comes from Japanese + ; the resemblance to the English words ''emotion'' and ''emoticon'' is False cognate, purely coincidental. The first emoji sets were created by Japanese portable electronic device companies in the late 1980s and the 1990s. Emoji became increasingly popular worldwide in the 2010s after Unicode began encoding emoji into the Unicode Standard. They are now considered to be a large part of popular culture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Bidirectional Text
A bidirectional text contains two text directionalities, right-to-left (RTL) and left-to-right (LTR). It generally involves text containing different types of alphabets, but may also refer to boustrophedon, which is changing text direction in each row. An example is the RTL Hebrew name Sarah: , spelled sin (ש) on the right, resh (ר) in the middle, and heh (ה) on the left. Many computer programs failed to display this correctly, because they were designed to display text in one direction only. Some so-called right-to-left scripts such as the Persian script and Arabic are mostly, but not exclusively, right-to-left—mathematical expressions, numeric dates and numbers bearing units are embedded from left to right. That also happens if text from a left-to-right language such as English is embedded in them; or vice versa, if Arabic is embedded in a left-to-right script such as English. Bidirectional script support Bidirectional script support is the capability of a comput ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Unicode Collation Algorithm
__NOTOC__ The Unicode collation algorithm (UCA) is an algorithm defined in Unicode Technical Report #10, which is a customizable method to produce binary keys from strings representing text in any writing system and language that can be represented with Unicode. These keys can then be efficiently compared byte by byte in order to collate or sort them according to the rules of the language, with options for ignoring case, accents, etc. Unicode Technical Report #10 also specifies the ''Default Unicode Collation Element Table'' (DUCET). This data file specifies a default collation ordering. The DUCET is customizable for different languages, and some such customizations can be found in the Unicode Common Locale Data Repository (CLDR). An open source implementation of UCA is included with the International Components for Unicode, ICU. ICU supports tailoring, and the collation tailorings from CLDR are included in ICU. See also * Collation * ISO/IEC 14651 * European ordering rules ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Combining Character
In digital typography, combining characters are Character (computing), characters that are intended to modify other characters. The most common combining characters in the Latin script are the combining diacritic, diacritical marks (including combining accents). Unicode also contains many precomposed characters, so that in many cases it is possible to use both combining diacritics and precomposed characters, at the user's or application's choice. This leads to a requirement to perform Unicode normalization before comparing two Unicode strings and to carefully design encoding converters to correctly map all of the valid ways to represent a character in Unicode to a legacy encoding to avoid data loss. In Unicode, the main block of combining diacritics for European languages and the International Phonetic Alphabet is U+0300–U+036F. Combining diacritical marks are also present in many other blocks of Unicode characters. In Unicode, diacritics are always added after the main char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |