Automation System
The program counter:

contains the address of the next instruction to be executed
None of these
counts the number of instructions that have been executed
is where arithmetic is done in a computer.
decides which program to run

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Automation System
Numerical control:

All of these
None of these
applies only to milling machines
is a method for controlling the operation of a machine by means of a set of instructions
is a method for producing an exact number of parts per hour

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