ANSI American National Standards Association: American National Standard institite

To enable the computer to support more languages, we usually use 0x80 ~ 2 bytes in the 0xff range to 1 character. For example, in the Chinese operating system, the byte [0xd6, 0xd0] is used for storage.

Different countries and regions have developed different standards, resulting in respective coding standards such as gb2312, big5, and JIS. These two bytes are used to represent the extended Chinese character encoding methods of a single character. They are called ANSI encoding. In a simplified Chinese system, ANSI encoding represents gb2312 encoding. In a Japanese operating system, ANSI encoding represents JIS encoding.

Different ANSI encodings are incompatible. When information is exchanged internationally, texts in two languages cannot be stored in the same ANSI encoded text.

Full name: American National Standard institite
Chinese Translation: American National Standards Association

ANSI is the default Operating System code.
The Simplified Chinese operating system is gb2312.