Iscioglu_ITEC368-lect3_ - 13/07/2011 1 Human Computer...

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Unformatted text preview: 13/07/2011 1 Human Computer Interaction ITEC368 More on Usability, Affordance, and Usability Principles Dr. Ersun İşçioğlu EASTERN MEDITERRANEAN UNIVERSITY School of Computing and Technology Department of Information Technology e-mail: ersun.iscioglu@emu.edu.tr Daily Challenges b How many of you can use all the functionality in your s VCR s Digital watch s Copy machine s Stereo system s Plumbing fixtures-2- 13/07/2011 2 What Is Usability? b User satisfaction-3- b Efficiency and effectiveness (user tasks) Importance Of Usability: Cost Of Using A Computer b Costs from a technical perspective s Hardware costs s Software costs b Costs from the user’s perspective (personware) s Training costs s Daily usage-4- What are the usability goals? 13/07/2011 3 Fun Examples b Leitz slide projector s Do you know how its work? s To move forward, short press s To move backward, long press b What happens when you get frustrated?-5- Fun Examples Doors-6- 13/07/2011 4 Fun Examples b Phones s How do you s transfer a call s change volume s store a number s ...-7--8- 13/07/2011 5 Changing Ringer Volume b Press “Program” b Press “6” b Set volume s Low - Press “1” s Medium - Press “2” s High - Press “3” b Press “Program”-9- Important Concepts b Affordances b Visibility b Conceptual models b Mapping b Feedback b Constraints-10- 13/07/2011 6 Visual Affordances b How something looks indicates how it’s can be used s Chair for sitting s Table for placing things on s Knobs for turning s Slots for inserting things into s Buttons for pushing b Complex things may need explaining, but simple things should not s When simple things need pictures, labels,...
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This note was uploaded on 08/01/2011 for the course ITEC 368 taught by Professor Wqe during the Spring '11 term at Eastern Mediterranean University.

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Iscioglu_ITEC368-lect3_ - 13/07/2011 1 Human Computer...

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