Automation System
Which of the following is often used as an alternative to the light pen or in association with storage tube displays?

None of these
Track ball
Mouse
Digitiser
Tablet

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Automation System
A semi-continuous operation means:

the operation is continuous each shift, but stops between shifts
coffee breaks are allowed for the operator
None of these
a computer is a required part of the machine
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.

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