Design Guidelines (Preece 22-25)

Metaphora

• System as a tool (what kind of tool)
• System as a concrete device (what functionality can be transfered)
• System as a human counterpart (repeat some human-like actions)
• System as a house, room or office (find services)
• System as a map (find your way)
• System as a game (rules of the game)

Scenarios , storyboards , snapshots

Design support

• Software for prototype and/or interface design (Jamba - java)
• Design room (wallcharting)

Use guidelines

Basic principles

• Know the user
• Reduce cognitive load
• Engineer for errors
• Maintain consistency and clarity

What guidelines

• General literature (e.g. Shneiderman)
• Standerds
• ISO9000 - general program design quality standards
• HCIstandards
• Common terminology
• Maintainability and evolvability
• A common identity
• Reductioin in training
• Health and safety
• ISO9241
• Ergonomics in work with VDU:s
• EC Council Directive (29 May 1990)
• Display - Keyboard - Operator/computer Interface
• House Style Guides
• Apple
• Microsoft
• Your Company Style