DIN IEC 60625-1:1981 An interface system for programmable measuring instruments (byte serial, bit parallel); part 1: functional specifications, electrical specifications, mechanical specifications, system applications and requirements for designer and user
VDI/VDE 2422-1994 history
1994VDI/VDE 2422-1994 Systematical development of devices controlled by microelectronics
1992VDI/VDE 2422-1992 Systematical development of devices controlled by microelectronics