Automation System
The "end-effector" of a robot:

None of these
All of these
is the robot "hand"
may have a gripping action
can be an actual tool

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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.
None of these
is expensive because it is sophisticated and make demands on the power and resources of the computer.
is used for interactive Graphics

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