Ethiopia's principal orthography is the Ge'ez script. Employed as an abugida for several of the country's languages, it first came into usage in the 6th and 5th centuries BC as an abjad to transcribe the Semitic Ge'ez language. Ge'ez now serves as the liturgical language of both the Ethiopian Orthodox Tewahedo and Eritrean Orthodox Tewahedo Churches. During the 1980s, the Ethiopic character set was computerized. It is today part of the Unicode standard as Ethiopic, Ethiopic Extended, Ethiopic Supplement and Ethiopic Extended-A.