Book Corresponding ISO/IEC 10646 Edition Scripts Characters # Notable additions 1.0.0 October 1991 ISBN 0-201-56788-1 (Vol.1) 24 7,161 Initial repertoire covers these scripts: Arabic , Armenian , Bengali , Bopomofo , Cyrillic , Devanagari , Georgian , Greek and Coptic , Gujarati , Gurmukhi , Hangul , Hebrew , Hiragana ,