Types of software

1. Types of Software

2. Introduction
•Software is programs or instructions that
tell the computer what to do and how to do
it
•Computers need software to do even a
simple job, without software computers
cannot function

3. Types of Software
•Two types:
System software
•It is the background software that enables the
application software to interact with each other
Application software
•It is a group of programs designed to accomplish a
single task or a group of related tasks

4. System Software
•Also known as Operating System (OS) and Disk Operating System
(DOS)
•OS allows applications software to communicate with the hardware
•DOS is a group of programs which manages the most basic
operations of a computer system
•DOS is a link between the users and the computer system
•Example of OS are Window XP, Window 7,VISTA, Linux, Macintosh,
etc
•DOS programs reside on a floppy disk or hard disk

5. Functions of OS
•Control the hardware, the memory and the
application software
•Manages the information on the disk
•Runs computer programs
•Manages the startup process

6. Application Software
•It is a group of programs designed to accomplish
a single task or a group of related tasks
•It divided into two categories:
User-designed application software
•Software that is created or designed by big companies and
government department
Ready-made application software
•A collection of programs designed for general use

7. User Designed Application Software
•Also known as Bespoke Software or
Tailor-Made Software
•These type of software are designed and
developed specifically for the company or
organization

8. Advantages
•The Company will get the exact
software/system that they need
•The software will work exactly how they
want it to work
•The software will only have the features
that they specifically need in their business

9. Disadvantages
•Takes a long time to develop
•Cost a great deal of money to develop
such system
•Company need to employ a team of
people such as analysts, programmers
•There will be little in the way of user
support and online help

10. Ready-Made Designed Application
Software
•Also known as Package Software or
Package
•It usually comes with manuals
Manuals are instruction on how to run the
application software
•Example Word Processing, Power Point

11. •Package is generally written in one of the
programming language by a team of
computer specialists.
•These specialist is called programmers
•A company or organization which writes
packages is called a software house
•A package is specific to an operating
system

12. Advantage of using
Ready-Made Packages
•User-friendly
•Cheap
•Easily Available

13. Disadvantages of using
Ready-Made Packages
•Rigid
•Functions cannot be changed
•Some may not suit own specific
requirement