This document discusses different types of multitasking operating systems, including single-user multitasking which allows one user to perform multiple tasks simultaneously, multi-user multitasking which enables multiple users to connect to a main computer concurrently, and distributed multitasking across networked computers located in different areas. Examples provided are Windows, Android, Unix, and Locus.

3. MULTITASKING OPERATING
SYSTEM
It loads multiple
programs or tasks into
the memory.
IT IS AGAIN DIVIDED
INTO TWO-

4. SINGLE USER MULTITASKING
A single user OS allows only
one user to perform
multiple tasks with the
computer at a time.
The desktops and laptops in
present times use this type
of operating system. Eg-
Windows, Android

6. MULTI-USER MULTITASKING
The multi-user system allows
more than one user to connect
to a main computer with and
an operating system. Eg- X
Window, Unix

8. • It allows different parts of a program of a
software to run simultaneously.
• Example: Windows XP, Windows 7 etc.
*A thread is the smallest sequence of instructions
that can be independently managed by the
operating system.

17. • It runs on a set of
computers that are located
in different geographical
areas, interconnected by a
network.
• Eg-Locus

19. •PICTURES-INTERNET