Automation System
The device that assembles groups of characters into complete messages prior to their entering the CPU is called:

an editor
None of these
a communications processor
an interpreter
a compiler

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Automation System
Today, programmable controllers:

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

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Automation System
An operating system:

can help reduce software development time
provides ability for other programmers to understand the software structure
All of these
is useless in most control applications
None of these

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