Automation System
When a computer fetches an instruction, the binary code representing the instruction appears on the:

input data bus
None of these
I/O address bus
output data bus
memory data bus

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

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

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Automation System
The use of specialized workstations:

reduces the host computer workload
reduces the host computer workload and allows more users
None of these
provides limited growth potentials for 3-D
has a high cost-performance tradeoff

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Automation System
Light sensors:

never use infrared light as light source
come in a wide variety of mounting styles
work in direct sunlight
None of these
cannot be used a s limit switches.

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