Automation System
Four basic elements are required for an automated machine tool or production process. They are: input interface, memory, output interface and:

NC tape programming
computer graphics workstation
software
logic
None of these

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Automation System
Ergonomics refers to:

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

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Automation System
Time proportioning control:

cannot use a TM990 micro¬computer
None of these
can be used on a PM550 programmable process controller
a and b above.
is less efficient than normal PID control

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