半角及全角形式

概览属性列表表格

In CJK (Chinese, Japanese and Korean) computing, graphic characters are traditionally classed into fullwidth (in Taiwan and Hong Kong: 全形; in CJK and Japanese: 全角) and halfwidth (in Taiwan and Hong Kong: 半形; in CJK and Japanese: 半角) characters. With fixed-width fonts, a halfwidth character occupies half the width of a fullwidth character, hence the name.

In the days of computer terminals and text mode computing, characters were normally laid out in a grid, often 80 columns by 24 or 25 lines. Each character was displayed as a small dot matrix, often about 8 pixels wide, and an SBCS (single byte character set) was generally used to encode characters of western languages.

For a number of practical and aesthetic reasons, Han characters would need to be twice as wide as these fixed-width SBCS characters. These 「fullwidth characters」 were typically encoded in a DBCS (double byte character set), although less common systems used other variable-width character sets that used more bytes per character.

属性

范围	FF00–FFEF
字符	240

角色列表

字符表

FE70–FEFF 阿拉伯文表达形式B FFF0–FFFF 特殊

0 基本多文種平面

1 多文種補充平面

2 表意文字補充平面

3 表意文字第三平面

4-13：未使用

14 特別用途補充平面

15 保留作為私人使用區（A區）

16 保留作為私人使用區（B區）

半角及全角形式

属性

角色列表

全角ASCII變體

全角括號

半角CJK標點

半角片假名變體

半角韓文變體

全角符號變體

半角符號變體

字符表