Maintaining power system, control system of machine and equipment, automatic-control system in stamping shop, to ensure production line smoothly running. Breakdown service within the shortest time.

By taking the ISO code for numerical control system of machine tools as an example, one of the methods of simplifying multivariable logic expressions, the multivariable graphic method, is introduced.

QEMU includes a monitor console that allows you to inspect a running guest operating system as well as control various aspects of the virtual machine (VM).