In an IPO (Input–Processing–Output) chart used during early program planning, the algorithm's steps are documented in which column?

Introduction / Context:
An IPO chart is a lightweight planning tool that clarifies what data comes into a program (Input), how it is transformed (Processing), and what results are produced (Output). Knowing where to write the algorithm helps keep program logic organized and reviewable.

Given Data / Assumptions:

• We are using a three-column IPO chart: Input, Processing, Output.
• We must note the algorithm—the sequence of logical steps.
• No special notation like flowcharts or pseudocode is required in the question, only the correct column.

Concept / Approach:
The algorithm describes transformations from inputs to outputs—calculations, decisions, iterations, and data manipulations. Therefore, it belongs to the Processing column, not the Input (which lists raw data) or Output (which lists expected results) columns.

Step-by-Step Solution:
Identify what the algorithm represents: the steps to convert inputs to outputs.Map this to the IPO structure.The correct placement is the Processing column.

Verification / Alternative check:
If you erase the Processing column from an IPO chart, the algorithm disappears and only data headings remain. That confirms the algorithm resides in Processing.

Why Other Options Are Wrong:
Input holds data elements required before execution. Output lists the final reports, screens, or values. “Purpose” is not a standard IPO column and does not host algorithm steps. “None of the above” is unnecessary because “Processing” is correct.

Common Pitfalls:
Students sometimes put formulas in Output. Outputs should state what is produced, not how it is produced. Keep calculations and logic under Processing.

Final Answer:
Processing