PLC stands for Programmable Logic Controller. It is a specialized industrial computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or even lighting fixtures. PLCs are designed to withstand harsh industrial environments and are widely used in manufacturing plants, refineries, and other industrial settings.
The introduction of PLCs revolutionized industrial automation by providing a flexible and robust alternative to traditional relay-based control systems.
For Introduction we need to see basic components of PLC.

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