Automation System
One advantage of a PC in industrial control is that it:

has a reliable long life compared to relay logic
None of these
is very difficult for the inexperienced programmer to understand
All of these
is unreliable because there are no moving parts

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Automation System
Ergonomics refers to:

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

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