Automation System
CAE and CAM are linked through:

None of these
NC tape programming and automated design
parts production and testing
assembly automation and tool production.
a common data base and communications system

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

None of these
All 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.
it is impossible to write a control program for a machine in any other logic

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