The document outlines the concept of computer software, defining it as a set of instructions for solving problems and categorizing it into two main types: system software and application software. It details application software, which performs specific tasks for users, and system software, which manages computer hardware operations and includes utilities and operating systems. Examples of each type of software are provided, along with the distinction between customized and packaged software.

1. Computer Software & its Types
Instructor : ifra Ghaffar
Course : Applications Of ICT

2. Software
• “A set of instructions given to the computer
to solve a problem is called Software.”
• “Software is a single/collection of programs
that performs a particular task.”
• Software is also called Program.
• Different software's are used to solve different
problems.
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3. Types Of Software
• There are two types of software on the basis of
their functionality:
▫ System Software
▫ Application Software
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4. Application Software
• Application Software includes programs
that do real work for user.
• Application Software is created to perform
specific tasks on computer.
• People use application software according to
their need.
• A large Numbers of application software is
available.
• Also known as Application package.
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5. Examples
▫ Microsoft Word
▫ Microsoft Excel
▫ Photoshop etc
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6. Customized software
• Customized software is software that
is specially developed for some specific
organization or other user.
• it is Developed to meet exact
requirement of customer.
• It can be developed by Single
Programmer or team of Programmer.
• A software developed for particular
university.
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7. Packaged Software
• Packaged Software is a Software that is
developed for sale to the general public.
• Also called off the shell program
• It help peoples to perform daily activities.
• Normally developed by expert programmers.
• Word processor such as MS word
• Spreadsheet such as Excel
• Graphics software such as ADOBE
PHOTOSHOP.

8. System Software
• System Software is set of programs to
control and manage the operations of a
computer hardware.
• It enables application programs to execute
properly.
• It consists of the basic operations as
follows:
▫ Saving data on disk
▫ Making computer to work for us
▫ Printing a document etc.
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9. Examples
• Examples of System Software's are:
▫ Operating Systems
▫ Utility Programs
▫ Device Drivers
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10. Operating System (OS)
• An operating system (OS) is a collection of
software that manages computer
hardware resources.
Act as an interface between computer user
and hardware.
• The operating system is a vital component of
the system software in a computer system.
• Other software run through it.
• Example: Windows MAC OS, Linux
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11. Utility program
• Utility program is a system software that
is to maintain the health of your
computer system or to diagnose
problems.
• It performs a specific task related to the
management of computer functions
resources and files.
• Improve Performance
• Protect Computer/ Anti Virus
• Backup Software
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12. Device Driver
• A Device Driver is a computer
program that operates or controls a
particular type of device that is attached to
a computer.
Allows the computer operating system to
communicate with hardware devices
▫ Like keyboard mouse
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