http://getchrome.eu/download.php
Download Chrome OS 0.9.570 RC (x86) Live CD
606 MB iso, MD5: 143acf5a2a2aa7f6d09cc10ef4eca5a8
Hosted by Easy Share | Download from Mirror
Download by BitTorrent: magnet link | Previous version: Chrome OS 0.8.552 beta
How to install: Download the iso file and burn it into CD-R. Boot the computer from it and when Chrome OS is loaded, click Live Installer on the desktop. Follow the instructions.
User password: user
Root password: root
screenshots:
http://getchrome.eu/screenshots.php
http://mashable.com/2009/08/15/google-chrome-os-screenshots/
About Chrome OS
2010-11-05: Chrome OS 0.9.570 Release Candidate (RC) is available for download!
Chrome OS is a brand new free operating system built around the revolutionary Google Chrome browser.
The project aim is to provide a lightweight Linux distribution for the best web browsing experience.
Featured software in Chrome OS:
* GNOME 2.30 desktop environment
* Google Chrome 9.0.570 web browser Updated!
* Google Picasa 2.7 photo manager
* OpenOffice.org 3.2 office suite
* GIMP 2.6 image editor
* Flash Player 10.1 plugin
* Wine Windows emulator 1.2
* Pidgin 2.6 instant messenger
* and much more!
System requirements of Chrome OS:
* Processor: Intel Pentium, Xeon or newer; AMD Duron, Athlon, Sempron, Opteron or newer
* RAM: min. 256 MB
* Hard disk: min. 1 GB
* Graphics card: supports most modern graphics cards
Download Chrome OS Live CD and give it a try
Sunday, November 21, 2010
What is an Operating System
The operating system is the core software component of your computer. It performs many functions and is, in very basic terms, an interface between your computer and the outside world. In the section about hardware, a computer is described as consisting of several component parts including your monitor, keyboard, mouse, and other parts. The operating system provides an interface to these parts using what is referred to as "drivers". This is why sometimes when you install a new printer or other piece of hardware, your system will ask you to install more software called a driver.
What does a driver do?
A driver is a specially written program which understands the operation of the device it interfaces to, such as a printer, video card, sound card or CD ROM drive. It translates commands from the operating system or user into commands understood by the the component computer part it interfaces with. It also translates responses from the component computer part back to responses that can be understood by the operating system, application program, or user. The below diagram gives a graphical depiction of the interfaces between the operating system and the computer component.
Operating System Interfaces
Other Operating System Functions
The operating system provides for several other functions including:
* System tools (programs) used to monitor computer performance, debug problems, or maintain parts of the system.
* A set of libraries or functions which programs may use to perform specific tasks especially relating to interfacing with computer system components.
The operating system makes these interfacing functions along with its other functions operate smoothly and these functions are mostly transparent to the user.
Operating System Concerns
As mentioned previously, an operating system is a computer program. Operating systems are written by human programmers who make mistakes. Therefore there can be errors in the code even though there may be some testing before the product is released. Some companies have better software quality control and testing than others so you may notice varying levels of quality from operating system to operating system. Errors in operating systems cause three main types of problems:
* System crashes and instabilities - These can happen due to a software bug typically in the operating system, although computer programs being run on the operating system can make the system more unstable or may even crash the system by themselves. This varies depending on the type of operating system. A system crash is the act of a system freezing and becoming unresponsive which would cause the user to need to reboot.
* Security flaws - Some software errors leave a door open for the system to be broken into by unauthorized intruders. As these flaws are discovered, unauthorized intruders may try to use these to gain illegal access to your system. Patching these flaws often will help keep your computer system secure. How this is done will be explained later.
* Sometimes errors in the operating system will cause the computer not to work correctly with some peripheral devices such as printers.
Operating System Types
There are many types of operating systems. The most common is the Microsoft suite of operating systems. They include from most recent to the oldest:
* Windows XP Professional Edition - A version used by many businesses on workstations. It has the ability to become a member of a corporate domain.
* Windows XP Home Edition - A lower cost version of Windows XP which is for home use only and should not be used at a business.
* Windows 2000 - A better version of the Windows NT operating system which works well both at home and as a workstation at a business. It includes technologies which allow hardware to be automatically detected and other enhancements over Windows NT.
* Windows ME - A upgraded version from windows 98 but it has been historically plagued with programming errors which may be frustrating for home users.
* Windows 98 - This was produced in two main versions. The first Windows 98 version was plagued with programming errors but the Windows 98 Second Edition which came out later was much better with many errors resolved.
* Windows NT - A version of Windows made specifically for businesses offering better control over workstation capabilities to help network administrators.
* Windows 95 - The first version of Windows after the older Windows 3.x versions offering a better interface and better library functions for programs.
There are other worthwhile types of operating systems not made by Microsoft. The greatest problem with these operating systems lies in the fact that not as many application programs are written for them. However if you can get the type of application programs you are looking for, one of the systems listed below may be a good choice.
* Unix - A system that has been around for many years and it is very stable. It is primary used to be a server rather than a workstation and should not be used by anyone who does not understand the system. It can be difficult to learn. Unix must normally run an a computer made by the same company that produces the software.
* Linux - Linux is similar to Unix in operation but it is free. It also should not be used by anyone who does not understand the system and can be difficult to learn.
* Apple Macintosh - Most recent versions are based on Unix but it has a good graphical interface so it is both stable (does not crash often or have as many software problems as other systems may have) and easy to learn. One drawback to this system is that it can only be run on Apple produced hardware.
source : http://www.comptechdoc.org/basic/basictut/osintro.html
What does a driver do?
A driver is a specially written program which understands the operation of the device it interfaces to, such as a printer, video card, sound card or CD ROM drive. It translates commands from the operating system or user into commands understood by the the component computer part it interfaces with. It also translates responses from the component computer part back to responses that can be understood by the operating system, application program, or user. The below diagram gives a graphical depiction of the interfaces between the operating system and the computer component.
Operating System Interfaces
Other Operating System Functions
The operating system provides for several other functions including:
* System tools (programs) used to monitor computer performance, debug problems, or maintain parts of the system.
* A set of libraries or functions which programs may use to perform specific tasks especially relating to interfacing with computer system components.
The operating system makes these interfacing functions along with its other functions operate smoothly and these functions are mostly transparent to the user.
Operating System Concerns
As mentioned previously, an operating system is a computer program. Operating systems are written by human programmers who make mistakes. Therefore there can be errors in the code even though there may be some testing before the product is released. Some companies have better software quality control and testing than others so you may notice varying levels of quality from operating system to operating system. Errors in operating systems cause three main types of problems:
* System crashes and instabilities - These can happen due to a software bug typically in the operating system, although computer programs being run on the operating system can make the system more unstable or may even crash the system by themselves. This varies depending on the type of operating system. A system crash is the act of a system freezing and becoming unresponsive which would cause the user to need to reboot.
* Security flaws - Some software errors leave a door open for the system to be broken into by unauthorized intruders. As these flaws are discovered, unauthorized intruders may try to use these to gain illegal access to your system. Patching these flaws often will help keep your computer system secure. How this is done will be explained later.
* Sometimes errors in the operating system will cause the computer not to work correctly with some peripheral devices such as printers.
Operating System Types
There are many types of operating systems. The most common is the Microsoft suite of operating systems. They include from most recent to the oldest:
* Windows XP Professional Edition - A version used by many businesses on workstations. It has the ability to become a member of a corporate domain.
* Windows XP Home Edition - A lower cost version of Windows XP which is for home use only and should not be used at a business.
* Windows 2000 - A better version of the Windows NT operating system which works well both at home and as a workstation at a business. It includes technologies which allow hardware to be automatically detected and other enhancements over Windows NT.
* Windows ME - A upgraded version from windows 98 but it has been historically plagued with programming errors which may be frustrating for home users.
* Windows 98 - This was produced in two main versions. The first Windows 98 version was plagued with programming errors but the Windows 98 Second Edition which came out later was much better with many errors resolved.
* Windows NT - A version of Windows made specifically for businesses offering better control over workstation capabilities to help network administrators.
* Windows 95 - The first version of Windows after the older Windows 3.x versions offering a better interface and better library functions for programs.
There are other worthwhile types of operating systems not made by Microsoft. The greatest problem with these operating systems lies in the fact that not as many application programs are written for them. However if you can get the type of application programs you are looking for, one of the systems listed below may be a good choice.
* Unix - A system that has been around for many years and it is very stable. It is primary used to be a server rather than a workstation and should not be used by anyone who does not understand the system. It can be difficult to learn. Unix must normally run an a computer made by the same company that produces the software.
* Linux - Linux is similar to Unix in operation but it is free. It also should not be used by anyone who does not understand the system and can be difficult to learn.
* Apple Macintosh - Most recent versions are based on Unix but it has a good graphical interface so it is both stable (does not crash often or have as many software problems as other systems may have) and easy to learn. One drawback to this system is that it can only be run on Apple produced hardware.
source : http://www.comptechdoc.org/basic/basictut/osintro.html
List of single user operating system?
MS-DOS
AmigaOS
Classic Mac OS (System 1 through Mac OS 9).
Windows 1.0
Windows 2.0
Windows 3.0
Windows 3.1x
Windows 95
Windows 98
Windows ME
AmigaOS
Classic Mac OS (System 1 through Mac OS 9).
Windows 1.0
Windows 2.0
Windows 3.0
Windows 3.1x
Windows 95
Windows 98
Windows ME
Types of Operating Systems
Within the broad family of operating systems, there are generally four types, categorized based on the types of computers they control and the sort of applications they support. The categories are:
* Real-time operating system (RTOS) - Real-time operating systems are used to control machinery, scientific instruments and industrial systems. An RTOS typically has very little user-interface capability, and no end-user utilities, since the system will be a "sealed box" when delivered for use. A very important part of an RTOS is managing the resources of the computer so that a particular operation executes in precisely the same amount of time, every time it occurs. In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system is busy.
* Single-user, single task - As the name implies, this operating system is designed to manage the computer so that one user can effectively do one thing at a time. The Palm OS for Palm handheld computers is a good example of a modern single-user, single-task operating system.
* Single-user, multi-tasking - This is the type of operating system most people use on their desktop and laptop computers today. Microsoft's Windows and Apple's MacOS platforms are both examples of operating systems that will let a single user have several programs in operation at the same time. For example, it's entirely possible for a Windows user to be writing a note in a word processor while downloading a file from the Internet while printing the text of an e-mail message.
* Multi-user - A multi-user operating system allows many different users to take advantage of the computer's resources simultaneously. The operating system must make sure that the requirements of the various users are balanced, and that each of the programs they are using has sufficient and separate resources so that a problem with one user doesn't affect the entire community of users. Unix, VMS and mainframe operating systems, such as MVS, are examples of multi-user operating systems.
Photo courtesy Apple
Mac OS X Panther screen shot
It's important to differentiate between multi-user operating systems and single-user operating systems that support networking. Windows 2000 and Novell Netware can each support hundreds or thousands of networked users, but the operating systems themselves aren't true multi-user operating systems. The system administrator is the only "user" for Windows 2000 or Netware. The network support and all of the remote user logins the network enables are, in the overall plan of the operating system, a program being run by the administrative user.
With the different types of operating systems in mind, it's time to look at the basic functions provided by an operating system.
source: http://computer.howstuffworks.com/operating-system3.htm
* Real-time operating system (RTOS) - Real-time operating systems are used to control machinery, scientific instruments and industrial systems. An RTOS typically has very little user-interface capability, and no end-user utilities, since the system will be a "sealed box" when delivered for use. A very important part of an RTOS is managing the resources of the computer so that a particular operation executes in precisely the same amount of time, every time it occurs. In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system is busy.
* Single-user, single task - As the name implies, this operating system is designed to manage the computer so that one user can effectively do one thing at a time. The Palm OS for Palm handheld computers is a good example of a modern single-user, single-task operating system.
* Single-user, multi-tasking - This is the type of operating system most people use on their desktop and laptop computers today. Microsoft's Windows and Apple's MacOS platforms are both examples of operating systems that will let a single user have several programs in operation at the same time. For example, it's entirely possible for a Windows user to be writing a note in a word processor while downloading a file from the Internet while printing the text of an e-mail message.
* Multi-user - A multi-user operating system allows many different users to take advantage of the computer's resources simultaneously. The operating system must make sure that the requirements of the various users are balanced, and that each of the programs they are using has sufficient and separate resources so that a problem with one user doesn't affect the entire community of users. Unix, VMS and mainframe operating systems, such as MVS, are examples of multi-user operating systems.
Photo courtesy Apple
Mac OS X Panther screen shot
It's important to differentiate between multi-user operating systems and single-user operating systems that support networking. Windows 2000 and Novell Netware can each support hundreds or thousands of networked users, but the operating systems themselves aren't true multi-user operating systems. The system administrator is the only "user" for Windows 2000 or Netware. The network support and all of the remote user logins the network enables are, in the overall plan of the operating system, a program being run by the administrative user.
With the different types of operating systems in mind, it's time to look at the basic functions provided by an operating system.
source: http://computer.howstuffworks.com/operating-system3.htm
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