PLC stands for programmable logic controller, a type of industrial computer that is used to automate processes and control machinery in manufacturing environments. PLCs are designed to operate in harsh conditions and can withstand high temperatures, humidity, and vibrations. They are programmed using ladder logic or other programming languages to execute specific tasks such as turning on/off machines, regulating temperatures, or monitoring sensors.

PLCs have revolutionized the manufacturing industry by increasing efficiency, reducing human error, and improving safety in industrial settings. They are widely used in various industries such as automotive, food and beverage, pharmaceuticals, and energy production to streamline operations and optimize production processes. PLCs have become an essential part of modern manufacturing, allowing companies to increase productivity and maintain high standards of quality control.