2020JIS X 0221:2020 Informationstechnologie – Universal Coded Character Set (UCS)
2014JIS X 0221:2014 Informationstechnologie – Universal Coded Character Set (UCS)
2007JIS X 0221:2007 Informationstechnologie – Universal Multiple-Octet Coded Character Set (UCS)
1995JIS X 0221:1995 Informationstechnologie – Universal Multiple-Octet Coded Character Set (UCS) – Teil 1: Architektur und grundlegende mehrsprachige Ebene