Automation System
The SKETCHPAD system

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

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Automation System
A sequence controller:

is no longer in widespread use
is a mechanical only controller
None of these
is difficult to program
performs on/off control functions in relation to time.

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Automation System
CAE and CAM are linked through:

a common data base and communications system
assembly automation and tool production.
None of these
NC tape programming and automated design
parts production and testing

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