1. Introduction to comp. and prog. CS 101 G 964
System Software:- Operating System basic, purpose type, PC operating system, DOS, Windows, Linux.
Mr. Mohammed Rahmath

3. Types of System Software:
• Operating systems are programs that coordinate computer resources, provide an interface between users and the computer, and run applications.
• Utilities, also known as service programs, perform specific tasks related to managing computer resources.
• Device drivers are specialized programs designed to allow input or output devices to communicate with the computer system.

4. Layers of System Software

5. Booting Booting is the process of bringing OS from Hard disk to RAM
Booting is the process of starting a computer
Warm boot (Key Term) – computer is already on and you restart it without turning off the power
Cold boot (Key Term) – starting a computer that has been turned off
Files (Key Term) – used to store data and programs
Folders (Key Term) – stores and organizes related files. May also house other folders

6. Operating System

7. Operating System
Definition: An operating system is the interface between the user and the architecture.
User Application
Operating System
Hardware

9. Translator also system software:
Examples of Translator are Assembler, Compiler and Interpreter.

10. OPERATING SYSTEMS (OS)
Features of DOS
MS DOS is the basic operating system with it you can do all the operation like –
create a text file
edit the file
save it your desired drive
connect to a DHCP (Dynamic Host Configuration Protocol) enabled internet connection

13. Functions of Operating System
Manages computer resources
Coordinate memory, processing storage, and printers
Monitor system performance
Provide security
Start-up the computer
Provides user interface
Character-based interface
Graphical user interface (GUI)
Runs applications
Multitasking
Foreground and background applications

14. Operating System - Properties
1. Batch processing

15. Operating System - Properties
2. Multitasking

16. Operating System - Properties
3. Multiprogramming

17. Spooling
Definition: Spooling is an acronym for simultaneous peripheral operations on line. Spooling refers to putting data of various I/O jobs in a buffer. This buffer is a special area in memory or hard disk which is accessible to I/O devices

18. Linux OS VS Windows OS Topic Linux Windows Price Free Operating System
Paid Operating System
Ease
Not so Easy to use
More Easy to use
Reliability
More Reliable
Less Reliable
Software
Not so supportive for most Software
All most all software support windows OS
Software Cost
Open source mostly
Paid Software
Hardware
Do not much Hardware
Most of the hardware supportive
Security
Highly Secure
Not so highly Secure