A controller which has a human interface that allows the determination of how the PC shall perform its operating functions (e.g., logic, sequencing, timing, counting, and arithmetic, to control, through digital or analog Inputs and Outputs, various types of machines or processes) in an industrial environment. The PC and its associated peripheral are designed so that they can be integrated into an industrial control system and used in their intended functions. The PC can be based on various technologies, including but not limited to; electro-mechanical (e.g., programmable tenor drum, programmable stepping switch), electronic (e.g., programmable diode matrix), or a digitally operating electronic system which uses a programmable memory for the internal storage of user-oriented instructions (e.g., computer, micro-computer, PLC, DCS).
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