Input-process-output (I-P-O) is a structured methodology ... It is often referred to, interchangeably, as an I-P-O model or ...

The primary logic in a program, which is input-process-output and repeat. The main loop continually tests for input and calls the appropriate routines to process it. Outputs are updated files sent ...

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 ...