Computer Science 2.1.3

This diagram shows that each procedure does not know how other functions work, just what data is required to be passed on.
Procedural Decomposition - Most computational problems beyond the trivial need to be broken down into sub-problems before they can be solved.
Think of any system which starts off by presenting the user with a menu of choices. Each choice will result in a different, self-contained module.
What is Top-Down Design? - The technique of breaking down a problem into the major tasks to be performed; each of these tasks is further broken down into subtasks, until each is sufficiently simple to be self-contained.
This diagram is an example of a hierarchy chart, which is a tool for representing the structure of a program.

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	Created by Jamie Fisher almost 7 years ago