The interface was first published in 1988 (version 3.0) and was designed to be sufficiently future proof to encompass advances in technology for a significant number of years. The current revision is 3.2.1, released in November 2005.
the interface was first published in 1988 (version 30) and was designed to be sufficiently future proof to encompass advances in technology for a significant number of years the current revision is 321 released in november 2005