Automation System
Straight-line operations:

None of these
must be limited to two per workpiece
can include diagonal cuts if they aren't curved
All of these
must be parallel to one of the axes of the coordinate system

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Automation System
Digital signals:

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

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