Lesson 7 operating
systems
Lesson 9
,Types of Application & System
Software
Chapter 4 Computer Software 2
,Application Software
General Purpose
Programs that perform common information processing
jobs for end users; e.g., word processing, spreadsheet
Also call productivity packages
Custom Software
Software applications developed within an organization for
use by that organization
Commercial Off-the-Shelf (COTS)
Many copies sold
Minimal changes beyond scheduled upgrades
Purchasers have no control over specifications, schedule,
or evolution, and no access to source code or internal
documentation
Product vendor retains the intellectual property rights of
the software
Chapter 4 Computer Software 3
, Application Software
Open-source Software
Developers collaborate on the development of an
application using programming standards which allow
anyone to contribute to the software
As each developer completes a project, the application
code becomes available and free to anyone who wants it
Chapter 4 Computer Software 4
systems
Lesson 9
,Types of Application & System
Software
Chapter 4 Computer Software 2
,Application Software
General Purpose
Programs that perform common information processing
jobs for end users; e.g., word processing, spreadsheet
Also call productivity packages
Custom Software
Software applications developed within an organization for
use by that organization
Commercial Off-the-Shelf (COTS)
Many copies sold
Minimal changes beyond scheduled upgrades
Purchasers have no control over specifications, schedule,
or evolution, and no access to source code or internal
documentation
Product vendor retains the intellectual property rights of
the software
Chapter 4 Computer Software 3
, Application Software
Open-source Software
Developers collaborate on the development of an
application using programming standards which allow
anyone to contribute to the software
As each developer completes a project, the application
code becomes available and free to anyone who wants it
Chapter 4 Computer Software 4
