Automation System
The robot:

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

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Automation System
Digital signals:

None of these
are assigned values of 1 or 0 depending on the voltage level
can have three possible levels
have a frequency measured in units of hertz
have a sinusoidal shape.

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