An operating system acts as an interface between the user and computer hardware, executing programs conveniently and efficiently. Key functions of an operating system include sending output to monitors, tracking files and directories, controlling devices, and recognizing keyboard/mouse input. Operating systems provide memory management, processor management, input/output management, file management, security, job accounting, and error detection. Different types of operating systems include single-user, multi-tasking, multi-user, real-time, and batch processing operating systems.

1. Operating system

2. What is an operating system ?
An operating system is a set of programs
that acts as an interface between the user
and the computer hardware.
Eg:unix,windows,linux.e.t.c
Purpose:
Execute programs in convinent way.
Works in efficent manner.
Act accordingly.

3. Operating System examples

4. Task of an operating system
 Sending output to monitor.
 Keeping track of files & directories on the disk,
and
 Controlling peripheral devices such as
disk drives and printers
 Recognizing output from the keyboard or
mouse.

5. Function of operating system
Memory management
Processor management
Input/Output management
File management
Security
Job accounting
Error detection

6. Single user operating system
Multi tasking operating system
Multiuser operating system
Real time operating system
Batch processing operating system
Types of operating system

7. A single user operating
system provides the
facilities to be used on
one computer by only
one user.
In other words, it
supports one user at a
time.
Eg: Windows and
MSDOS
Single user operating system

8. Multi tasking operating system
Multitasking refers to
term where multiple
jobs are executed by
the CPU
simultaneously by
switching between
them.It allows a user
to perform more than
one computer task at
a time.
Linux

9. MULTIUSER OPERATING SYSTEM
Multi-user operating
system is a operating
system that allows
multiple users on
different computers or
terminals to access a
single system with one
operating system
on it.
Eg:unix,linux

10. REAL TIME OPERATING SYSTEM
Real-time operatingsystem is a
computer operating system designed to handle
events as they occur.
Real-time operating systems are
commonly found and used in
robotics, cameras,complex
multimedia animation
systems, communications,
and have various military
and government uses.

11. BATCH PROCESSING OPERATING SYSTEM
Batch processing is a technique in which
operating system collects one program and data
together in a batch before processing starts and
keep executing the jobs in a batch automatically.

12. PROCESS STATES

13. THANK YOU