Automation System
The real "brain" of an artificial intelligence system is referred to as:

recursive technology
natural language interfaces
bubble memory
None of these
the expert system

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Automation System
Digital signals:

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

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Automation System
A discrete parts process is:

normally a repetitive series of operations
(b) and (c)
None of these
often encountered in manufacturing
the same as a continuous process except a different controller must be used

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