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

Track ball
Mouse
None of these
Digitiser
Tablet

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Automation System
A semi-continuous operation means:

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

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