System software includes programs that control and manage computer hardware operations like the operating system, utility programs, device drivers, and language processors. The operating system manages all computer components and operations, loading programs into memory and executing them while also controlling devices. Utility programs are used for effective system management through tasks like backups and diagnostics. Device drivers allow operating systems to communicate with devices like printers and sound cards. Language processors translate programs into machine code so computers can execute them.

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System Software
Course Code: ICT-321
Course Title : Introduction to Computer
Instructor: Miss Omal Sahar

2.  System software is set of programs to control and manage the
actual operations of a computer hardware.
 It controls the usage and allocation of different hardware
components.
 Control the basic operations as follows:
 Saving data on disk
 Making computer to work for us
 Printing a document
System Software

3. 1. Operating System
2. Utility Programs
3. Device Driver
4. Language Processor
Types of System Software

4. 1. Operating System
 Set of Programs that manages all computer components ad
operations.
 Most important software that runs on the computer.
 Computer cannot do anything without an operating system.
 It must be installed on every computer.
 Acts as an interface between the computer user and the
hardware.
 The user interacts with the computer through operating system.
Types of System Software

5. 1. Operating System
Types of System Software

6. Important tasks of Operating System
 It loads programs into memory and execute them.
 Controls the operations of all devices.
 Manage files and folders.
 It provide the facility to create passwords to make sure it is not
used by unauthorized persons.
 Identifies the hardware problems and display messages to solve
them.
Types of System Software

7. Examples of Operating System
 Microsoft Windows
 Linux
 Unix
 Mac OS etc.
Types of System Software

9. 2. Utility Programs
 A utility programs a type of system software that is used for
effective management of computer system.
 User can use utility programs to perform maintenance tasks
related different devices and programs.
 Most Operating systems include different built in utility
programs.
Types of System Software

10. 2. Utility Programs (Examples)
 File Viewer [Used to display and manage files and folders]
 Backup utility [ Used to take backup of data]
 File Compressor [ Used to reduce the size of the files]
 Diagnostic utility [Used to detect the hardware and software
problem]
 Antivirus Software [ Used to detect and remove virus]
Types of System Software

12. 3. Device Driver
 Control the operations of a device.
 An operating system uses a device driver to communicate with
a device.
 Many device drivers automatically installed with windows.
Types of System Software

13. 3. Device Driver
 All devices attached to the computer need the device drivers
such as printer, modem and sound card etc.
 A device cannot work properly if its device driver is not
installed properly.
 Device drivers provided by the device manufacturer.
Types of System Software

15. 4. Language Processor
 Translate source code into machine code.
 Every computer language has its own translator.
 Computer only understands only machine language.
 A program written in high level or assembly language cannot
run on a computer directly.
Types of System Software

16. 4. Language Processor
 It must be converted into machine language using language
processor.
 Different types of language processors include compiler,
interpreter and assembly language.
Types of System Software

17. Types of System Software

18. References
 Introduction to Computers by Peter Norton (Latest Edition)
 IT-Series The Concept of Information Technology (Latest
Edition)