Cocomo Calculator

Version 1.0, published June 2001

 

 

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Cocomo Calculator

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Cocomo is a model designed by Barry W. Boehm to give an estimate of the number of man months it will take to develop a software product. This "COnstructive COst MOdel" is based on a study of about 60 projects at TRW. The programs used for this development work ranged from 2000 to 100.000 lines of code, and programming languages used range from assembly to PL/I. Cocomo consists of a hierarchy of 3 increasingly detailed and accurate forms.

These three types of Cocomos are Basic, Intermediate and Advanced. On the three small paragraphs below these models are shortly describied.

Basic Cocomo calculates projects size just based on the lines of code. This model does not have any settable parameters like talents of designers for example. This model is supported by this program, when all settings are set to normal.

Intermediate Cocomo have several settable parameters, which can be used to make the calculation of the size of the project more realistic. See from the program the settings page. These settings are called cost drivers.

Advanced Cocomo (not supported by this software) incorporates all characteristics of the intermediate version with an assessment of the cost driver's impact on each step (analysis, design, etc.) of the software engineering process

 

On right you can see main user interface to Cocomo Calculator. On this page you can set things like size of the software project and costs of employees. After pressing calculate button program will calculate needed man months, calender months, costs and issues like that. From the setting button you can set "weights" of Cocomo Calculator according to the project. There are things like project-, product-, personnal- and hardware attributes, which are used to describe the nature of the software project to the Calculator. The best way to get started is to push question mark and study in build help system.