Also referred to as automation, uses numerical control during the use of control systems (e.g. computers) to control industrial machinery and processes, replacing human operators. It is a step beyond mechanization, where human operators are provided with machinery to assist them with the physical requirements of work. The most visible part of modern automation can be said to be industrial robotics. Some advantages are repeatability, tighter quality control, waste reduction, integration with business systems, increased productivity and reduction of labor.