Automation System
Which of the methods below can be used to tell a robot what it is to do?

None of these
Software program
Set mechanical stops
Walk-through
(a) and (c)

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

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

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