Automation System
In the operation of a programmable controller:

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

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Automation System
Ergonomics refers to:

the cost relationship of the workstation versus productivity
the level of involvement the operator has with the workstation
the technology involved in the workstation itself
None of these
the human aspect of the environment around the workstation as well as the workstation itself

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Automation System
A flip-flop:

is a combinational logic device
(a) and (c)
is a sequential logic device
remembers what was previously stored in it
None of these

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