Chinese Character Code for Information Interchange
The Chinese Character Code for Information Interchange ( CCCII , Chinese 中文 資訊 交換 碼 , in German about Chinese character code for information exchange ) is a Chinese character set that is ISO / IEC-2022- compliant.
The character set is a mixed 8- and 24-bit character set. The first 128 code points are coded in 8 bits and correspond to ASCII . The following 128 code points are coded in 24 bits in a three-dimensional 94 × 94 × 94 matrix, so theoretically 830,584 characters can be coded.
This area is divided into 15 so-called layers . These layers all encode the same Chinese characters, but in different variants. Layer 1 encodes traditional characters , layer 2 short characters , layer 13 Kanji and layer 14 Hanja . The layers in between are used for further variants, while layer 15 is reserved.
Due to its properties, the character set is used very often by libraries. B. the Library of Congress CCCII (East Asia Coded Character, EACC, ANSI / NISO Z39.64).