Ch 4, HCI Remixed
Sutherland, Sketchpad: A Man-Machine
Graphical Communication System
Bederson, Hollan, Pad++: A Zooming Graphical
Interface for Exploring Alternate Interface Physics
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Joseph A. Konstan
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PhD Berkeley (CS)
Faculty at University of Minnesota, (CS&E)
Research areas:
 HCI, recommender systems, online community, info
visualization
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HCI has a place in CS
Drawing programs that “[take] full advantage
of computing”
Pointing at
Rendering of basic objects
Making constraints visible and explicit
Programming Structures
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Ivan E. Sutherland
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PhD, MIT, CSEE
 Sketchpad developed as part of diss. work
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Context of paper:
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Published in 1963,
Influenced: GUIs, CAD, OOP, HCI
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Summary:
Lines, circles, text
 Constraints
 Ring structure, storage of objects, copying
 Recursive functions
 Light pen and pointing
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Benjamin B. Bederson
PhD, New York University, CS
 Currently at UMD, HCIL
 At the time of the paper, at Bell Communications
Research (Computer Graphics & Interactive Media)
 Research Areas: HCI, computer graphics,
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James D. Hollan
PhD, University of Florida
 Currently at UC San Diego, Dept of Cognitive Science
 At the time of the paper, at UNM, CS
 Research Areas: HCI, distributed cognition, visualization
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Summary:
Digital objects with visible history
 Zooming as a basic function of interaction
 Local detail vs global context
 Showing hyperlink relationships
 Directory browser and databases
 Limits of metaphor
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