Unitary: "unit-like", unit = one, therefore a "unitary" PLC (if there is such a thing) would be a controller that was all-inclusive in one package, a self-contained unit.
The authors for the course books and materials have to find some definitions to put it, but surely they realize that for a fast-changing field like PLCS, the definitions are obsolete almost before the books can be printed.
The authors for the course books and materials have to find some definitions to put it, but surely they realize that for a fast-changing field like PLCS, the definitions are obsolete almost before the books can be printed.
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