Automation System
High-level languages:

are very difficult to use
are "procedure-oriented"
None of these
cannot be used with automatic systems.
require knowledge of the computer design

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Automation System
D/A (digital to analog) conversion:

both (b) and (c)
has to be sampled at 1/2 the highest input frequency
None of these
results in a binary code as the final output
must be fed through a filter to reproduce the original signal accurately

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Automation System
Trend analysis:

requires a very expensive system to implement
can improve control system response
is used only in financial planning
None of these
is a brand new concept

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