The document discusses different types of operating systems: - Single-user operating systems only allow one task at a time like MS-DOS. - Multi-user operating systems allow multiple users to access resources simultaneously through a network. - Time-sharing operating systems enable many users to use a computer simultaneously. - Real-time operating systems have strict time constraints for tasks like influencing processes. - Multiprocessing operating systems use multiple CPUs and copies of the OS. - Distributed operating systems use independent networked computers each holding part of the OS.

1. IX Ch 4 Operating
System

2. Types of operating
System

3. Single User Operating System
An operating system that allows a single user to
perform only one task at a time is called a Single-
User Single-Tasking Operating System. Functions
like printing a document, downloading images, etc.,
can be performed only one at a time. Examples
include MS-DOS, Palm OS, etc.

4. Multiprogram Operating System
This is multi user operating
A multi-user operating system (OS) is a computer
system that allows multiple users that are on
different computers to access a single system's OS
resources simultaneously, as shown in this figure
appearing on your screen right now. Users on the system
are connected through a network.

5. Time Sharing Operating System
Time-Sharing Operating Systems is one of the
important type of operating system. Time-sharing
enables many people, located at various terminals,
to use a particular computer system at the same
time. Multitasking or Time-Sharing Systems is a
logical extension of multiprogramming.

6. Real Time Operating System
A real-time operating system (RTOS) is a special-
purpose operating system used in computers that
has strict time constraints for any job to be
performed. It is employed mostly in those systems in
which the results of the computations are used to
influence a process while it is executing

7. Multiprocessing Operating System
A multiprocessing operating system (OS) is one in
which two or more central processing units
(CPUs) control the functions of the computer.
Each CPU contains a copy of the OS, and these
copies communicate with one another to coordinate
operations.

8. Distributed Operating System
A distributed operating system is system software
over a collection of independent, networked,
communicating, and physically separate
computational nodes. ... Each individual node
holds a specific software subset of the global
aggregate operating system.

9. Operating System based on type of Interface

10. commonly used operatings systems

11. Linux
Linux is a family of open-source Unix-like
operating systems based on the Linux kernel,
an operating system kernel first released on
September 17, 1991, by Linus Torvalds.

12. Windows
Microsoft Windows, commonly referred to as
Windows, is a group of several proprietary graphical
operating system families, all of which are
developed and marketed by Microsoft.

14. BOSS
Bharat Operating System Solutions is an Indian Linux
distribution derived from Debian. BOSS Linux is officially
released in four editions: BOSS Desktop, EduBOSS, BOSS
Advanced Server and BOSS MOOL. The latest stable version
8.0, was released on 11 July 2019.

15. Solaris
Solaris is a proprietary Unix operating system originally
developed by Sun Microsystems. After the Sun acquisition by
Oracle in 2010, it was renamed Oracle Solaris

16. Mobile Operating System

17. Andriod
Android is a mobile operating system based on a modified
version of the Linux kernel and other open source software,
designed primarily for touchscreen mobile devices such as
smartphones and tablets.

18. Symbian
Symbian is a discontinued mobile operating system and computing
platform designed for smartphones. Symbian was originally
developed as a proprietary software OS for PDAs in 1998 by the
Symbian Ltd. consortium.

19. Windows Phone
Windows Phone is a discontinued family of mobile
operating systems developed by Microsoft for smartphones
as the replacement successor to Windows Mobile and
Zune.

20. Mobile Operating System apple ios
Apple (AAPL) iOS is the operating system for iPhone, iPad,
and other Apple mobile devices. Based on Mac OS, the
operating system which runs Apple's line of Mac desktop and
laptop computers, Apple iOS is designed for easy, seamless
networking between a range of Apple products.

22. Blackberry
BlackBerry OS is a proprietary mobile operating system
designed specifically for Research In Motion's (RIM) BlackBerry
devices. The BlackBerry OS runs on Blackberry variant phones like
the BlackBerry Bold, Curve, Pearl and Storm series.

23. File System

24. Role of a file system
A file system stores and organizes data and can be thought of as a type
of index for all the data contained in a storage device. These devices can
include hard drives, optical drives and flash drives. ... PC and mobile
OSes have file systems in which files are placed somewhere in a
hierarchical tree structure.