Automation System
Four basic elements are required for an automated machine tool or production process. They are: input interface, memory, output interface and:

logic
computer graphics workstation
NC tape programming
software
None of these

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Automation System
Stepping motors:

can be built to index different amounts by changing the pole configuration
do not require commutators
All of these
can run at varying speeds
can run both clockwise and counterclockwise

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Automation System
Sensors:

probably will not improve over the next decade
will be much smarter and more sophisticated in the future
None of these
are easily developed
are not important in automation

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Automation System
The robot:

None of these
will be more useful when robot vision is improved significantly
is very primitive at the present
represents the most powerful new industrial automation tool currently on the horizon
All of these

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