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

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

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Automation System
The program counter:

contains the address of the next instruction to be executed
counts the number of instructions that have been executed
is where arithmetic is done in a computer.
None of these
decides which program to run

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