Automation System
The two major categories of software are: application software and

high-level languages
system software
CAD software
UNIX software
None of these

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Automation System
Relay ladder logic is used in a PC because:

it is the best industrial control language ever developed.
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
None of these
All of these
it is impossible to write a control program for a machine in any other logic

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Automation System
Vision sensors:

will remain very costly
None of these
will more closely match the capabilities of the human eye
can not improve much in the next decade
All of these

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