Automation System
Which item best describes a CAM technology?

Numerical control
Documentation
Geometric modeling
Drafting
None of these

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Automation System
Sensors:

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

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Automation System
Digital signals:

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

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