Automation System
The term used to represent the recycling of unused memory is:

direct memory access
memory dump
garbage collection
diagnostic routine
None of these

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Automation System
A sequence controller:

performs on/off control functions in relation to time.
is difficult to program
is no longer in widespread use
is a mechanical only controller
None of these

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Automation System
Today, programmable controllers:

are more powerful then the first controllers on the market
can be cost effective even when replacing just a few relays
None of these
are relatively low cost compared with the original digital equipment available for industrial control
All of these

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