Input-process-output (I-P-O) is a structured methodology for capturing and visualizing all of the inputs, outputs, and ...

A key process input variable (KPIV) is a process input that provides a significant impact on the output variation of a process or a system, or on the key process output variable (KPOV) of a product.

However, the simple flow chart of Input, process, and output are still used to visualise how the system performs. With mechanical control systems the input is supplied by movement, this is known ...