Character Encoding References
This is the character set used most often by C programmers and it is the basic character set implemented by the char data type.
A multi-byte character encoding method that incorporates the language/character set into the format. UNICODE was made popular by Web programming where compatibility between countries is important. C extensions make it possible to work with UNICODE in C however there is not a lot of use in the embedded domain.
The original 8 bit character set widely used are large scale computers popular before the PC and C.
Used on 36 bit computers so 6 characters could cleanly be packed into one memory location. Not so popular now since 32 and 64 bit systems are what we have today.
A 5 bit character (very limited character set) used by old teletypes and paper tape.