HCILecture_Week1C - ^ > ^ W ^ s > ^ < D D d E > ^ < D Z ^ ^...

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Design – Part 2 Duncan Stevenson Human-Computer Interaction Comp 3900 and Comp 6390 Semester 2, 2010 1 Lecture 1C: Human-Computer Interaction, Semester 2, 2010
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From previous lecture: Design principles: -Conceptual models -Feedback Lecture 1C: Human-Computer Interaction, Semester 2, 2010 2 -Constraints -Affordances -Visibility -Good mappings
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Knowledge, Memory, Constraints, Mappings These all contribute to making the Lecture 1C: Human-Computer Interaction, Semester 2, 2010 3 user’s life easier Norman, Chapter 3
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Knowledge (1) Bad example: car ignition key Most car makers have some form of interlock on the ignition key: Lecture 1C: Human-Computer Interaction, Semester 2, 2010 4 -Release button on the key barrel -Steering wheel lock (Subaru) -Automatic transmission in “park” (Honda) -Gear shift in reverse (Norman’s example) Knowledge is embedded in the car but hard to find
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Knowledge (2) Car ignition key (continued). In the 1950’s the ignition key’s main
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HCILecture_Week1C - ^ > ^ W ^ s > ^ < D D d E > ^ < D Z ^ ^...

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