1981-1988: DIN 66 234: Grundsätze ergonomischer Dialoggestaltung.
1995: ISO 9241: Ergonomic requirements for office work with display terminals (VDTs).
Based on the path-breaking work of Dzida, Herda and Itzfeld (1978) twenty years ago, the German national standard DIN 66234, part 8 was developed and published in 1988.
Dzida, W., Herda,S. and Itzfeld, W.D. 1978, User-perceived quality of interactive systems. IEEE Transactions on Software Engineering, SE-4, 270 – 276.
Its definitions of usability principles for software user interfaces for office work became the basis for the international and European standard ISO EN 9241-10 (ISO 1996). This standard serves as the reference for the European Community directive 90/270/EEC for minimum safety and health requirements to be guaranteed by an employer for his staff working at computer workstations.