Character Code Structure and Extension
6th edition (December 1994)
This Standard specifies the structure of 8-bit codes and 7-bit
codes which provide for the coding of character sets. The code
elements used in the structure are common to both the 8-bit and
7-bit codes. The codes use a variety of techniques for extending
the capabilities of elementary 8-bit and 7-bit codes. Greater
emphasis is given to 8-bit codes in this edition of the Standard
than in previous editions because they are now more widely used.
The use of common elements in the 8-bit and 7-bit code structure
enables any specific conforming 8-bit code to be transformed into
an equivalent 7-bit code, and vice versa, in a simple and direct
Standard ECMA-43 conforms to the 8-bit
code structure specified here, and Standard ECMA-6
conforms to the 7-bit code structure specified here.
The sixth edition of this Standard is fully identical with International
The following file can be freely downloaded:
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 2022
The previous replaced "historical" editions of this Ecma Standard are available here.