Automation System
The user communicates directly with the computer through its peripheral devices is known as

Batch mode processing
On-line processing
Remote-terminal processing
Intelligent terminal Processing
None of these

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Automation System
Digital signals:

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

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