Chinaunix首页 | 论坛 | 博客
  • 博客访问: 173926
  • 博文数量: 5
  • 博客积分: 2785
  • 博客等级: 少校
  • 技术积分: 473
  • 用 户 组: 普通用户
  • 注册时间: 2007-08-29 12:07




2010-05-16 17:00:35

American Standard Code for Information Interchange Law and Legal Definition

American Standard Code for Information Interchange (ASCII ) is a character set and a character encoding based on the Roman alphabet as used in modern English. ASCII codes represent text in computers, communications equipment, and control devices that work with text. There are 95 ASCII characters, numbered 32 to 126, which are printable.





Since its conception, ASCII codes knew many evolutions and, in the 1990's, evolved to a new code called Unicode? that handles alphabets of many nations and symbols.

The Unicode code space is divided into . Each plane contains 65,536 code points (16-bit) and consists of several .

If the Unicode standard can handle up to , it currently assigns characters to more than 96,000 of those code points.

The first 256 characters table is identical to the ISO 8859-1 character set (the  is identical to the ISO 8859-1 table, except in the range 80h-9Fh where we can find C1 control characters). The first 128 characters table is hence identical to the standard .

More information on Unicode characters is available at:


Unicode is a trademark of Unicode, Inc.

阅读(3668) | 评论(0) | 转发(0) |