The document contains slides from supplementary materials for a software engineering textbook. The slides discuss what software is, noting it is a set of programs, documents, and data that form a configuration. They also discuss that software is engineered, complex, and can deteriorate over time like an aging factory. The slides cover the high costs of changes to software after release and provide examples of different types of software applications. In summary, the slides supplement a textbook by defining software and discussing challenges such as complexity, deterioration over time, and the high costs of changes.

1. Supplementary Slides for
Software Engineering:
A Practitioner's Approach, 5/
e
copyright © 1996, 2001
R.S. Pressman & Associates, Inc.
For University Use Only
May be reproduced ONLY for student use at the university level
when used in conjunction with Software Engineering: A Practitioner's Approach.
Any other reproduction or use is expressly prohibited.
This presentation, slides, or hardcopy may NOT be used for
short courses, industry seminars, or consulting purposes.
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
1

2. Chapter 1
The
Product
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
2

3. What is
Software?
Software is a set of items or objects
that form a “configuration” that
includes
• programs
• documents
• data ...
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
3

4. What is Software?
t software is engineered
t software doesn’t wear out
t software is complex
t software is a ‘differentiator’
t software is like an ‘aging
factory’
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
4

5. Wear vs. Deterioration
increased failure
rate due to side effects
Failure
rate
change
actual curve
idealized curve
Time
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
5

6. The Cost of Change
60-100x
1.5-6x
1x
Definition Development After release
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
6

7. Software Applications
t system software
t real-time software
t business software
t engineering/scientific
software
t embedded software
t PC software
t AI software
t WebApps (Web applications)
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
7

8. Software Poses Challenges
These courseware materials are to be used in conjunction with Software Engineering: A Practitioner’s Approach,
5/e and are provided with permission by R.S. Pressman & Associates, Inc., copyright © 1996, 2001
8