Automation System
In the operation of a programmable controller:

mathematics cannot be performed
all of the logic status is maintained in memory
All of these
None of these
any latched data must be done using an external latching relay

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Automation System
Stepping motors:

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

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Automation System
The robot:

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

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