Automation System
An encoder:

is used to send telegraph signals
None of these
converts an input to a binary number
can have only four keys
converts a binary number to a decimal number.

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Automation System
Microcomputer-based control sys-tems

All of these
None of these
will have more standard industrial application software available in the future.
will tend to increase in cost.
will just keep their present capability

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Automation System
A venturi tube:

is extremely difficult to use
None of these
is made only of metal
measures the presence of a liquid
can be used to measure gas or liquid flow rates

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