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ISC Chapter Six Notes Direct Manipulation
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Direct manipulation explained by the principle of virtuality
a representation of reality that can be manipulated and by the principle of transparency the user is able to apply intellect to the task, but the tool (computer) itself seems to disappear November 24, 2018 Jeffrey P. Landry, Ph. D.
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Driving a car command-driven interface direct manipulation
TURN WHEEL LEFT 30 DEGREES direct manipulation scene is visible through front window driver rotates physical wheel scene changes (with little delay) driver uses feedback to refine turn November 24, 2018 Jeffrey P. Landry, Ph. D.
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Evolution of word processors
line editors full-screen editors WYSIWYG what you see is what you get November 24, 2018 Jeffrey P. Landry, Ph. D.
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Problems w/ direct manipulation
limited screen space learning use of components misleading pointing, mouse may be slower than typing for expert user November 24, 2018 Jeffrey P. Landry, Ph. D.
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Force feedback haptic Examples:
the use of touch and force feedback in an interface design good for sight-impaired users Examples: the “click” of keyboard keys November 24, 2018 Jeffrey P. Landry, Ph. D.
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Home automation VCR interfaces light switches
“looking at” vs. “being in” November 24, 2018 Jeffrey P. Landry, Ph. D.
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References Shneiderman, Ben, Designing the User Interface: Strategies for Effective Human-Computer Interaction, 1998, Addison Wesley Longman, Inc., Reading, MA, 1998 November 24, 2018 Jeffrey P. Landry, Ph. D.
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