Automation System
Stepping motors:

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

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Automation System
Straight-line operations:

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

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