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The Guobiao (GB) line of character encodings start with the Simplified Chinese charset GB 2312 published in 1980. Two encoding schemes existed for GB 2312: a one-or-two byte 8-bit EUC-CN encoding commonly used, and a 7-bit encoding called HZ [1] for usenet posts. [2]: 94 A traditional variant called GB/T 12345 was published in 1990.
While GB/T 2312 covers over 99.99% contemporary Chinese text usage, [8] historical texts and many names remain out of scope. Old GB 2312 standard 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 ...
On the other hand, 95 characters defined in GBK 1.0 were initially not encoded into Windows-936. This is partly resolved in later versions of Windows and, as in Windows 7, all GBK characters not in the Unicode BMP Private Use Area can be displayed using code page 936, but encoding the 95 characters was still not supported as of 2014.
UTF-8 is also the recommendation from the WHATWG for HTML and DOM specifications, and stating "UTF-8 encoding is the most appropriate encoding for interchange of Unicode" [4] and the Internet Mail Consortium recommends that all e‑mail programs be able to display and create mail using UTF-8.
CNS 11643 is designed to conform to ISO 2022, although only the first seven 94×94-character planes have ISO-IR registrations. The total number of planes has varied with successive revisions of the standard; the most recent pending drafts have 19 planes, [2] so the maximum possible number of encodable characters across all planes is 19×94×94 = 167884.
Extended Unix Code (EUC) is a multibyte character encoding system used primarily for Japanese, Korean, and simplified Chinese (characters).. The most commonly used EUC codes are variable-length encodings with a character belonging to an ISO/IEC 646 compliant coded character set (such as ASCII) taking one byte, and a character belonging to a 94×94 coded character set (such as GB 2312 ...
The shortcomings of sound-based encoding lie in its high degree of duplicate encoding, with homophone Chinese characters sharing the same code. A Chinese character is normally pronounced with one syllable. Chinese Putonghua only has about 400 different syllables without considering tones, or approximately 1,200 syllables when tones are considered.
GB 18030 is a Chinese government standard, described as Information Technology — Chinese coded character set and defines the required language and character support necessary for software in China. GB18030 is the registered Internet name for the official character set of the People's Republic of China (PRC) superseding GB2312 . [ 1 ]