Software consists of computer programs, data structures, and documentation that provide desired features and functions. Software is engineered rather than manufactured, does not wear out over time, and is often custom-built despite a trend toward component-based construction. Software is a product that delivers computing potential through transforming, managing, and transmitting information while controlling other programs, enabling communications, and aiding in further software development.

1. 1
What is Software
Software is:
(1) instructions (computer programs) that when executed provide
desired features, function, and performance;
(2) data structures that enable the programs to adequately manipulate
information and
(3) documentation that describes the operation and use of the
programs.
Introduction

2. 2
Characteristics of S/W
• Software is developed or engineered, it is not
manufactured in the classical sense.
• Software doesn't "wear out."
• Although the industry is moving toward component-
based construction, most software continues to be
custom-built.

3. 3
Wear vs. Deterioration

4. Nature of Software
Software is a Product
Software is a vehicle for delivering a product
• Transforms information- produces, manages, acquires, modifies,
displays or transmits information
• Delivers computing potential of hardware and networks
• Controls other programs (operating system)
• Effects communications (networking software)
• Helps build other software (software tools &
environments)