Automation System
The SKETCHPAD system

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

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Automation System
Most industrial control applications:

can be solved using more than one method of control
All of these
must have the process specified correctly to be successful
None of these
can be done more reliably using solid-state methods

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