A Programmable Logic Controller (PLC) is an industrial digital computer designed to monitor inputs, make decisions based on its programmed logic, and control outputs. PLCs are widely used in manufacturing and automation to manage machinery, processes, and equipment. They are designed for real-time operation, making them highly reliable for controlling complex systems like assembly lines or food and beverage processing plants.  PLCs are preferred in industrial settings because they can withstand harsh environments, are flexible, and can be easily reprogrammed for different tasks.