Automation System
When a computer fetches an instruction, the binary code representing the instruction appears on the:

output data bus
None of these
memory data bus
I/O address bus
input data bus

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Automation System
Numerical control:

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

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