ISO 9241

ISO 9241 is a multi-part standard from the International Organization for Standardization (ISO) covering ergonomics of 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). From 2006 on, the standards were retitled to the more generic Ergonomics of Human System Interaction.

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). Part 1 is a general introduction to the rest of the standard. Part 2 addresses task design for working with computer systems. Parts 3–9 deal with physical characteristics of computer equipment. Parts 110 and parts 11–19 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).

The revised multipart standard is numbered in series as follows:

Within those series, the standard currently includes the following parts:

In 2006, it revised ISO 9241-10:1996, Ergonomic requirements for office work with visual display terminals (VDTs) -- Part 10: Dialogue principles.

This part deals with general ergonomic principles which apply to the design of dialogues between humans and information systems:

ISO 9241-210, Ergonomics of human-system interaction, provides guidance on human-system interaction throughout the life cycle of interactive systems.

With its introduction in 2008, it revised ISO 13407, Human-centred design for interactive systems.

Of particular interest to the lay computer user are the definitions of flat-panel TV and monitor pixel defects provided in the ISO-9241-3xx series of standards (which renders obsolete ISO 13406-2). These identify three classes for measuring pixel defects in flat panel monitors:

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