Friday 29 May 2009

Principles of good design

Visibility - user can tell what state the device is in and the alternatives for action

A good conceptual model - designer provides a good conceptual model for the user with consistency in presentation of operations and results and a coherent, consistent system image

Good mappings - it's possible to determine the relationships between actions and results, between the controls and their effects, and between the system state and what is visible

Feedback - use receives full and continuous feedback about the result of actions

From The Design of Everyday Things by Donald Norman.

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