Automation System
High-level languages:

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

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Automation System
A process controller:

All of these
can interface to digital and analog I/O
can solve a PID process control equation easily
None of these
is useful in a continuous process control application

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Automation System
How is the integral mode implemented on a digital controller?

the error signal is summed over a discrete time interval and accumulated by the controller
the error is divided into discrete amounts
the digital controller cannot handle integral mode
All of these
None of these

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