This document provides information about operating systems and Windows 7. It defines what an operating system is and its purposes. It then discusses Windows 7 specifically, including its faster boot and loading times compared to Vista, its improved performance, reliability and compatibility. The document outlines the system requirements and editions of Windows 7, and highlights some of its new features like Jump Lists, Libraries and HomeGroup sharing. It also briefly compares Windows 7 and 8, and provides steps to install Windows 7.

2. What is OS
Windows 7 overview
Boot Performance
Benefits of Windows 7
System Requirement
Flavors of Windows 7
Features of Windows 7
Difference between Win. 7 and Win. Vista
Windows 8
Steps to Install windows 7

3. Definition :
An Operating System is an interface between user and
hardware of a computer system.
Goals of O.S :
• To make the computer system convenient to use.
• To use the computer hardware in an efficient manner.
Purpose of O.S :
The purpose of an operating system is to provide an environment
in which a user may execute programs.

4. Process management
Interrupts
Memory management
Virtual file system
Device drivers
Networking
Security
Graphical user interfaces

5. What is “windows 7”?
Most Recent version of Microsoft Windows
Operating system.
Windows 7 was released to Manufacturing on July
22,2009,and reached general retail availability on
October 22,2009.

6. Boot time is fast. On the same computer, Vista booted in
approximately 80 seconds. Windows 7 booted in 50 seconds.
That's about a 38% fast boot time with Windows 7 .
Applications load faster. With Vista it took approximately 30
seconds. Windows 7 loaded in 20 seconds
The installation is faster than Windows Vista

7. Performance : Windows 7 starts, shuts down, and resumes
from Standby faster than earlier versions of Windows.
Reliability :Reliability improvements in Windows 7 include
a Fault Tolerant Heap that resolves common memory
management issues.
Application Compatibility :A key engineering goal for
Microsoft is that software that runs on Windows Vista will
run as well or better on Windows 7.
.

8. Device Compatibility : As with software, Microsoft set an
engineering goal that devices that work with Windows Vista will
also work with Windows 7—and has greatly expanded the list of
devices and peripherals that are being tested for compatibility
Security : Windows 7 delivers new capabilities to better protect
your security and privacy, and makes existing security features
such as User Account Control and Windows Defender easier to
use.
Improved Battery Life : Improvements to power management in
Windows 7 will help extend the battery life of your mobile PC.

9. Architecture 32-bit 64-bit
Processor 1 GHz 32-bit processor 1 GHz 64-bit processor
Memory (RAM) 1 GB of RAM 2 GB of RAM
Graphics Card DirectX 9 graphics processor with WDDMdriver
model 1.0 (ForAero)
HDD free space 16 GB of available disk
space
20 GB of available disk
space
Optical drive DVD drive (only to install from DVD/CD
Media)

10. Windows 7 Starter Edition:
Will only be offered pre-installed by an OEM on new PCs
limited to specific types of hardware.
Only 3 simultaneous applications can be ran at a time.
Ability to join Home Group.
Improved taskbar abilities (Superbar) and Jump lists.

11. Windows 7 Home Basic:
Only available in emerging markets.
Missing Aero UI Tweaks.
Windows 7 Home Premium:
Available worldwide to OEMs and in retail.
Includes Aero UI Tweaks (Screen Docking, Windows
Peeking, etc).
Multi-touch capabilities.
Media capabilities (Media Center, Media Streaming).
Handwriting Recognition.

12. Windows 7 Professional:
Available worldwide to OEMs and in retail.
Includes all features of Premium.
Enhanced networking abilities.
Backing up Data and Encrypting Data.
Data protection and advanced networking support.
Mobility Center.

13. Windows 7 Enterprise:
Not available in retail or by OEMs, only available
through volume licensing.
Includes features of Professional
Includes Advanced Data Protection and ITtools
(Branch Cache, Bit Locker,AppLocker).
· Improved Remote Access (without the need ofVPN
with DirectAccess).

14. Windows 7 Ultimate:
Offered only as an add-on to Home Premium or
Professional.
Includes features from Enterprise.

15. More personal: Redecorate your desktop with fun new themes,
slide shows, or handy gadgets.
Performance improvements: Designed to sleep and resume
quicker, be less memory hungry, and spot USB devices faster.
Play To: Play your media on other PCs, stereos, or TVs around
the house.
Remote Media Streaming: Enjoy music and video on your
home PC—even when you're not at home.
Windows Touch: Pair Windows 7 with a touch screen and you
won't always need a keyboard or mouse.

16. Jump Lists
Jump Lists provide users with quick access to a mini-Start
menu containing lists of pictures, music, word documents
or links that they use most frequently.

17. Libraries
Instead of having all files and folders organized under the
familiar Documents folder, Windows 7 features separate
Libraries for specific content types such as contacts,
documents, downloads, music, pictures and videos.

18. Sharing with HomeGroup
Home Groups let you easily link Windows 7 computers on
your home network to share pictures, music, videos,
documents and devices such as a printer.

19. The Aero Desktop is really nothing more than a
collection of window and desktop behaviors that make
Windows 7 the prettiest version of the operating system
to date. Features such as Aero Snap let you quickly
organize open windows and transparency makes it easy
to see what’s underneath other windows. With Windows
XP think opaque, with Windows 7, think translucent.

21. If you give lots of presentations, you’ll welcome a new
tool in Windows 7 that makes it easy for you to display
your Windows 7 portable computer’s desktop on a
projector. Just press the Windows logo key + P and you’ll
see the pop-up box shown in Fig.

22. New Taskbar
Windows 7 desktop will look different now because of the new
taskbar. You can now reorder the opened Window buttons. It has
Jump Lists feature which will allow you to access common
programs very easily. And you can see the full screen preview
before switching to a window.

23. Performance and User Friendly
Windows 7 will reduce the time to install an app. Also,
now Windows will be less annoying with very less UAC
prompt. For developers also, Win7 will reduce the time
taken for developing Windows app.

24. Security
Vista has never been known for having good security.
UAC or User Account Control was introduced with Vista
and later kept in Windows 7 but with additional controls
and improved functionality. UAC is simply a security
feature that helps to block viruses and malware. Although
it isn’t bullet proof, it certainly limits what certain types
of malware can do to your PC.

25. Windows 8 was produced by Microsoft for use on
personal computers, including home and business
desktops, laptops, tablets, and home theater PCs.
Development of this operating system started before
the release of its predecessor in 2009.
Its existence was first announced in January 2011 at
Consumer Electronics Show.

26. Microsoft
During its development and test phases,
released three pre-release versions:
Developer Preview (September 13, 2011),
Consumer Preview (February 29, 2012), and
Release Preview (May 31, 2012).
On August 1, 2012, Windows 8 graduated from the
development stage and was released to manufacturing.
Windows 8 is slated for general availability on October
26, 2012.

27. Graphical user interface :- A new design used by Microsoft.
A new Start screen to replace the Start menu used by
previous versions of Windows.
A new online store that can be used to obtain applications,
described as a "fast and fluid" experience with emphasis on
touchscreen input.
Additional security features were also added to the
operating system, such as a built-in antivirus program and a
secure boot feature on systems with UEFI firmware.
Windows 8 also introduces an edition of the operating
system designed to run on devices that utilize the ARM
architecture, known as Windows RT.

29. Architecture IA-32 (32-bit) x86-64 (64-bit)
Processor 1 GHz (with PAE, NX and SSE2 support)
Memory (RAM) 1 GB 2 GB
Graphics Card
DirectX 9 graphics device with WDDM 1.0 orhigher
driver
Storage 20 GB

30. The Start menu has been removed in favor of a full screen
interface called the Start screen.
The Aero Glass theme, which has been featured in Windows Vista
and Windows 7 has been removed from Windows 8 in favor of a
Metro-style theme.
Microsoft Gadgets which has been featured in Windows Vista and
Windows 7 has been removed from Windows 8.

31. Windows Media Center will no longer be included by default
in any version of Windows 8.
The Blue Screen of Death no longer shows as much technical
information about the error that caused the computer to stop.
The Parental Controls feature present in earlier versions of
Windows has been removed and replaced by the Family
Safety feature.