Automation System
Digital signals:

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

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Automation System
Ergonomics refers to:

the level of involvement the operator has with the workstation
the cost relationship of the workstation versus productivity
the human aspect of the environment around the workstation as well as the workstation itself
None of these
the technology involved in the workstation itself

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Automation System
The SKETCHPAD system

is used for interactive Graphics
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.
All of these
None of these
is expensive because it is sophisticated and make demands on the power and resources of the computer.

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