Automation System
What is required to enable the PC to emulate a graphics terminal?

A graphics board
None of these
A laser printer
Software
A color monitor

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Automation System
Digital signals:

None of these
have a sinusoidal shape.
are assigned values of 1 or 0 depending on the voltage level
can have three possible levels
have a frequency measured in units of hertz

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Automation System
A process controller:

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

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