Automation System
The computer graphics system called SKETCHPAD was demonstrated at

Cranfield Institute of Technology, London, 1962
Imperial college of Science and Technology, London, 1973
Massachusetts Institute of Technology in 1963
University of Aston, Birmingham, 1960
None of these

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Automation System
The SKETCHPAD system

None of these
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.
All of these
is used for interactive Graphics
is expensive because it is sophisticated and make demands on the power and resources of the computer.

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