Automation System
Which of the following editor(s) is(are) incorporated into general CAD system?

None of these
Point Editor
Line Editor
Macro and symbol Editor
All of these

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Automation System
Digital signals:

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

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