Jan 23, 2025 · Input-process-output (I-P-O) is a structured methodology for capturing and visualizing all of the inputs, outputs, and process steps that are required to transform inputs into outputs. It is often referred to, interchangeably, as an I-P-O model or an I-P-O diagram, both of which refer to the intended visual nature of the method.

Input-process-output (IPO) — also called an IPO model or IPO diagram — is a visual tool used to describe a workflow, the flow of information, or activities within a system.

The input–process–output (IPO) model, or input-process-output pattern, is a widely used approach in systems analysis and software engineering for describing the structure of an information processing program or other process.

A computer program or any other sort of process using the input-process-output model receives inputs from a user or other source, does some computations on the inputs, and returns the results of the computations.

An IPO (Input-Process-Output) chart visually represents how data and resources (inputs) are transformed into results (outputs) through a series of steps (processes). It usually includes clearly defined columns for each component, ensuring no details are overlooked.

In conclusion, a system diagram that showcases the input, process, and output is a powerful tool for understanding and improving systems. It provides insights into how inputs are transformed through processes to generate desired outputs.

In software development, the IPO Model can be used to design a program that takes user input (e.g., text), processes it (e.g., performs a spell check), and generates output (e.g., displays corrected text).

A HIPO model consists of a hierarchy chart that graphically represents the program’s control structure and a set of IPO (Input-Process-Output) charts that describe the inputs to, the outputs from, and the functions (or processes) performed by each module on the hierarchy chart.

Input-Process-Output (IPO), also known as a system flowchart, is an integral part of business operations and management. It uses inputs from customers, suppliers and staff to process an outcome, which should match the specified requirements. The output is then used as a baseline for comparison and improved upon with each iteration.

The following diagram shows the structure and relationships of an Input-Process-Output (IPO) System Conceptual Model. This model of an Input-Process-Output (IPO) highlights the input and output system elements each with specific types of interfaces.