Design principles


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Physical constraints


  • Refer to the way physical objects restrict the movement of things

  • How many ways can you insert a CD or DVD disk into a computer?

  • How physically constraining is this action?

  • How does it differ from the insertion of a floppy disk into a computer?



Affordances




Logical constraint








        • Where do you plug the mouse?




        • Where do you plug the keyboard?




        • Top or bottom connector?




        • Do the colour coded icons help?

From: www.baddesigns.com


How to design them more logically


  1. A provides direct adjacent mapping between icon and connector

  2. B provides color coding to associate the connectors with the labels

From: www.baddesigns.com





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