what is the most common extended ascii set
Extended ASCII Eventually, ISO released this standard as ISO 8859 describing its own set of eight-bit ASCII extensions. The most popular is ISO 8859-1, also called ISO LatinÂ 1, which contained characters sufficient for the most common Western European languages. Variations were standardized for other languages as well: ISO 8859-2 for Eastern European languages and ISO 8859-5 for Cyrillic languages, for example.