9 Electric and electronic controls for machine tools, assembly line machines, and special purpose machine tools, all for controlling machining, cutting, drilling, coating, forming, assembly, and 3D printing of work pieces; electric and electronic controls and supervision apparatus for assembly machines, machining centers, assembly line conveyor machinery and machine tools, namely, electric and electronic controls for controlling spindle positions, work piece position, tool position, tool exchanger position, tool magazine position, temperature, hydraulic and coolant fluid levels; electric and electronic controls for machine tools, assembly line machines, and special purpose machine tools, namely, programmable logic controllers (PLCs), electric switches, and thermostats; computer programs for automation and interconnection of machines and assembly lines, for remote control and surveying of machines and assembly lines, for monitoring machines and assembly lines, for interconnecting and digitizing of production processes, for communication between machines or assembly lines and external devices, for surveying, monitoring, and showing the status of machines or assembly lines, for connecting machines with enterprise resource planning (ERP) systems, for diagnosing the status of machine tools and assembly lines, for servicing and maintaining machine tools and assembly lines, for use in planning the need for spare parts and ordering spare parts, for programming machine tools and assembly lines, for simulating machine tools and assembly line, for providing training in the field of machine tools and assembly lines, for providing and retrieving data relating to machine tools and assembly lines, and for monitoring and optimizing the performance of machine tools and assembly lines