CONTENTS
Introduction
History of Os
Architecture
Chrome Os devices
Advantages of Google Chrome Os 
Disadvantages of Google chrome Os
Limitations
What is chromebook?
how to download chrome os
How does Chrome OS differ from other operating systems?
CONCLUSION
                                      Introduction
Chrome OS is a Linux-based operating system designed by Google.
Chromebooks run on Chrome OS, a Google operating system.
It is derived from the free software Chromium OS and uses the Google Chrome web browser as
its principal user interface
Written in: C, C++, assembly, JavaScript, HTML5, Python,
Initial release date: June 15, 2011
Continue….
Chrome OS is an open source operating system developed by Google that is
much lighter  than the Windows operating system. All operations of using,
accessing data, using applications are performed on the Web platform .
                             History of Os
The Chrome Operating System was announced on the 7 th Of July 2009, by Google
LLC.
The Chrome OS was formerly designed for Netbooks and Personal Computers .
The Chrome OS is feasible with the hard disk drives (HDD), but Google had
requested its hardware providers for solid-state devices citing better performance and
reliability. Matthew Papakipos (engineering director, Chrome OS), in the year 2009,
claimed that the Chrome OS used 1/60 part of the space used in Windows OS.
In November that year, the open-source project was released as “Chromium OS”. At
a news conference, Sunder Pichai, CEO of Google, mentioned that Google would try
to reduce the boot time of Chrome which was 7 seconds then . 
Continue……
Google Chrome, is one of the most used browsers in the world today.
Apart from being the most famous browser, it is an open-source browser as well. 
The people using the computers having Google Chrome, experience ease of use
by doing most of their work online on the cloud with very minimal or no need of
downloading any programs or applications.
The personal computers that use Chrome get several updates and also receive
security. The user information is basically stored on the cloud with minimal or no
storage of such information on the user’s machine. Working and storing data
using Google’s cloud computing services can be done using Google Chrome
browser. E.g. Microsoft Office web apps can be accessed using Google Chrome. 
Architecture of the Chrome OS
The Chrome OS is built on the Linux kernel. It has a three-tier architecture comprising firmware,
browser and window manager, and system-level software and userland services.
 Firmware is responsible for the quick booting. It also manages the recovery and verifies each
step in the booting process thereby, providing security. System-level software is used for
enhancing performance while booting.
The Userland services have only essentials, that can manage programs in parallel, and delay
services in the interest of fast booting. The task of the window manager is to handle user
interaction with multiple client windows like other X window managers. 
Chrome OS devices
Device that uses chrome operating system Are :
1.   Chromebook
2.   chromeBox
Asus chromebooks
Acer chromebooks
Hp chromebooks
Dell chromebooks
Samsung chromebooks
Google chromebooks
Advantages of Chrome operating
system
Chrome OS is fast and stable.
The Chrome operating system is lightweight and cloud-based.
The Google Chrome operating system revolves around and resolves the need of people to use
the internet and internet-related browsing and services.
Chrome is a very high speed browser that can run on ARM and ATOM processors as well.
  Disadvantages of Chrome OS?
Needs fast internet:As 90% of Chromebook is for internet-connected apps so you will need a
fast internet connection to use Chrome OS.
Uses high RAM:
Chrome OS uses high RAM because it contains extensions too that consumes a lot of RAM.
Limitations of Google Chrome 
It has limitations in information Security which make it vulnerable to several security attacks by
hackers. Sensitive information is often accessed by hackers.
The Google Chrome is not compatible with all sorts of hardware. This can be improved in
future versions. 
What is chromebook?
A Chromebook is a tablet or laptop that runs Chrome OS. Most of the apps on Chromebook runs
from the cloud e.g. Google drive, photos, spreadsheets, slides, documents are all loaded from the
cloud-based internet.
how to download chrome os
Download Chromium OS. ...
Extract the Image. ...
Prepare Your USB Drive. ...
Use Etcher to Install the Chromium Image. ...
Restart Your PC and Enable USB in the Boot Options. ...
Boot into Chrome OS Without an Installation. ...
Install Chrome OS on Your Device.
How does Chrome OS differ from other
operating systems?
The main difference between Chrome OS and other operating systems is that Chrome relies
more heavily on the cloud. 
  CONCLUSION
Chrome OS is a useful solution if you work online often and need less demanding programs for your
daily tasks. You can log in with your Google account, which gives you access to all apps from the
Chrome Web Store.
Any Question