The definition of PLC​

A Programmable Logic Controller, or PLC for short, is simply a special computer device used for industrial control systems.

Explanation:

A PROGRAMMABLE LOGIC CONTROLLER (PLC) is an industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices. ... That is, you can mix and match the types of Input and Output devices to best suit your application.

observing, describing, acting with awareness, nonjudging of experiences, non-reacting to personal experiences.

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answer; businesses resort to illegal means to earn profits;