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GB2312 is the registered internet name for a key official character set of the People's Republic of China, used for simplified Chinese characters. GB abbreviates Guojia Biaozhun (国家标准), which means ''national standard'' in Chinese. GB2312 (1980) has been superseded by GBK and GB18030, which include additional characters, but GB2312 is nonetheless still in widespread use. While GB2312 covers 99.75% of the characters used for Chinese input, historical texts and many names remain out of scope. GB2312 includes 6,763 Chinese characters (on two levels: the first is arranged by reading, the second by radical then number of strokes), along with symbols and punctuation, Japanese kana, the Greek and Cyrillic alphabets, Zhuyin, and a double-byte set of Pinyin letters with tone marks. 1.5% of all web pages use GB2312 in July 2014.〔http://w3techs.com/technologies/history_overview/character_encoding〕 There is an analogous character set known as GB/T 12345, closely related to GB2312, but with traditional character forms replacing simplified forms. GB-encoded fonts often come in pairs, one with the GB 2312 (simplified) character set and the other with the GB/T 12345 (traditional) character set. == Characters == Characters in GB2312 are arranged in a 94x94 grid (as in ISO 2022), and the two-byte codepoint of each character is expressed in the kuten (or quwei) form, which specifies a row (ku or qu) and the position of the character within the row (ten or wei). The rows (numbered from 1 to 94) contain characters as follows: * 01-09, comprising punctuation and other special characters; also Hiragana, Katakana, Greek, Cyrillic, Pinyin, Bopomofo * 16-55, the first plane for Chinese characters, arranged according to Pinyin. (3755 characters). * 56-87, the second plane for Chinese characters, arranged according to radical and strokes. (3008 characters). * 88-89, further Chinese characters. (103 characters). Defined only for GB/T 12345, not GB 2312. The rows 10-15 and 90-94 are unassigned. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GB 2312」の詳細全文を読む スポンサード リンク
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