ISO 9241

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ISO 9241 is a multi-part standard from the International Organization for Standardization (ISO) covering ergonomics of human-system interaction and related, human-centered design processes (see also human-computer interaction). It is managed by the ISO Technical Committee 159. It was originally titled Ergonomic requirements for office work with visual display terminals (VDTs).^[1] From 2006 onwards, the standards were retitled to the more generic Ergonomics of Human System Interaction.^[2]

As part of this change, ISO is renumbering some parts of the standard so that it can cover more topics, e.g. tactile and haptic interaction. For example, two zeros in the number indicate that the document under consideration is a generic or basic standard. Fundamental aspects are regulated in standards ending with one zero. A standard with three digits other than zero in the number regulate specific aspects. The first part to be renumbered was part 10 (now renumbered to part 110).^[3]

Part 1 is a general introduction to the rest of the standard. Part 2 addresses task design for working with computer systems. Parts 3 to 9 deal with physical characteristics of computer equipment. Part 110 and parts 11 to 19 deal with usability aspects of software, including Part 110 (a general set of usability heuristics for the design of different types of dialogue) and Part 11 (general guidance on the specification and measurement of usability).