ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
Visualisations in the device
Recommendations for user interfaces
115
ISO 9241-11 _ Guidance on usability
7448
The usability of a software depends on its context of use. In part 11 of ISO 9241 three main criteria are
defined for the usability of a software:
Effectivity to solve a task
Efficiency to use the system
Satisfaction of the software user
ISO 9241-110 _ Dialogue principles
7450
User interfaces of interactive systems such as websites or software should be easy to use. Part 110 of
ISO 9241 describes the following principles for the design and evaluation of an interface between the
user and system (dialogue design):
Suitability for the task
Suitable functionality, minimisation of unnecessary interactions
Self-descriptiveness
Understandability by means of support / feedback
Suitability for learning
User guidance, suitable metaphors, goal: minimum learning time
Controllability
Dialogue control by the user
Conformity with user expectations
Consistency, adaptation to the user model
Suitability for individualisation
Adaptability to the user and his context of work
Error
tolerance
Intelligent dialogue principles so that the user avoids error is given priority. Other aspects:
Detected user errors do not prevent the user's goal.
Undetected errors: slight correction by the user.