Extended ASCII

Uncommon card · No. 101190

Extended ASCII is a repertoire of character encodings that generally include the original 96 ASCII character set, plus up to 128 additional characters. There is no formal definition of "extended ASCII", and the use of the term has been criticized. The ISO standard ISO 8859 was the first international standard to formalise an expansion of the ASCII character set: of the many language variants it encoded, ISO 8859-1 – which supports most Western European languages – is best known in the West as ISO Latin-1. Since ISO 8859, there have been many other extended ASCII encodings. EBCDIC likewise developed many extended variants over the decades. All modern operating systems use Unicode which supports thousands of characters. However, extended ASCII remains important in the history of computing, and supporting multiple extended ASCII character sets required software to be written in ways that made it much easier to support the UTF-8 encoding method later on.

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