Automation System
The program counter:

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

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Automation System
Straight-line operations:

must be parallel to one of the axes of the coordinate system
All of these
None of these
can include diagonal cuts if they aren't curved
must be limited to two per workpiece

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Automation System
High-level languages:

are "procedure-oriented"
are very difficult to use
require knowledge of the computer design
None of these
cannot be used with automatic systems.

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Automation System
Today, programmable controllers:

are more powerful then the first controllers on the market
None of these
are relatively low cost compared with the original digital equipment available for industrial control
can be cost effective even when replacing just a few relays
All of these

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