This example is from a PowerPoint slide

It is designed to show the user one aspect of the proposed home library system - in this case how the search works.

Although it doesn't do very much, it does give the user a clearer idea of what happens when the Buttons are pressed.

A prototype is a preliminary or test solution that can be shown to a potential end user of a system.

They can be classified as either functional or non-functional - depending upon whether they can demonstrate results to the user. The IB dossier requires students to develop a non-functional prototype.

Here is a simple (and not so good) example from a home library system:

Here is an example of a prototype created as an Applet - it shows no real functionality:

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