| Data: heating and cooling units with pressure specs. |
| Scenario: The "user" is an architect who can look up units and view their specs. We assume the user knows how much air flow is required for a room. The user specifies a length of air duct and a cross-section and is told whether a chosen unit has enough air flow and is shown the result of the simulation that shows the interior air flow pattern of the duct. |
| Implementation 1: Design the user interface - how the user views units, chooses one, specifies the duct, and views the results. Write a C or Perl program to extract the unit information. Write a C or Perl program that calculates air flow and conducts the simulation. Write the HTML for the Web interface and the Perl program that is the CGI script. |