Automation System
The SKETCHPAD system

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

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Automation System
The computer graphics system called SKETCHPAD was demonstrated at

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

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Automation System
Direct Numerical Control means:

complete elimination of a need for a human operator.
using one computer to control several machines
eliminating computers from the manufacturing process
using several computers to control one large machine
None of these

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