Jawaid Ahmed is an instructor of computer science at Sukkur IBA University Khairpur Campus. A computer receives input, stores or processes it according to instructions, and provides output. Software, which are computer instructions that tell the computer how to work, enables computers to perform specific tasks. There are two types of software: system software used to run computers like operating systems, device drivers, and utility software; and application software designed to perform specific tasks like word processing, spreadsheets, and databases.

1. Software
Engr. Jawaid Ahmed jawaid.khp@iba-suk.edu.pk
Instructor CS @ Sukkur IBA University Khairpur Campus

2. COMPUTER
A computer is an electronic device that
receives input, stores or processes the input
as per user instructions and provides output
in desired format

3. SOFTWARE
A collection of computer instructions that tell the computer
how to work is called a software.
Software is a program that enables a computer to perform a
specific task.

4. PROGRAM
A computer program is a collection of instructions that
performs a specific task.

5. Types of software
• There are two types of software
• 1) System Software
• 2) Application Software

6. System Software
• System software used to run computer
• (System software examples - Microsoft Windows, Mac OS, Linux,
Ubuntu, device drivers, Utility software, etc.)

7. System software
• System software includes:
• Operating systems
• Device drivers
• Utility software

8. Operating system
• An operating system is system software that manages computer
hardware and software resources and provides common services for
computer programs.
• the operating system acts as an intermediary between programs and
the computer hardware
• examples - Microsoft Windows, Mac OS, Linux, Ubuntu

9. Device driver
• A device driver is a computer program that operates or controls a
particular type of device that is attached to a computer
• A driver provides a software interface to hardware devices
• Drivers may interface with:
• Printers
• Scanners
• Network devices
• Other devices

10. Utility software
• Utility software is system software designed to help to analyze, configure,
optimize or maintain a computer.
Examples of utility software include −
• Antivirus software
• Disk management tools
• File management tools
• Compression tools
• Backup tools

11. Application software
• Application software is designed to perform a specific task.
• Application software is a collection of instructions that accomplish a single task or
group of related task.
Here are some commonly used application software −
• Word processing – word
• Spreadsheet – Excel
• Presentation – PowerPoint
• Database management - Access
• Multimedia tools – Photo Gallery, Media Player
• Special purpose software – Adobe Photoshop, Premier Pro