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In his book "Introduction to operating system design and implementation: the OSP 2 approach", Kifer and Smolka 1 (p 2) defined a computer operating system is a software program that enables the computer hardware to communicate with the computer software. Its purpose is to provide an environment in which the user of a computer system can execute programs and make the computer system convenient to use. Computer operating systems can be classified based on: graphical User Interface, multi user OS, multi processing OS or multi threading OS. Windows, Linux and UNIX are among the operating systems in the market.
Comparison of Windows XP against Windows7
Microsoft says that the new feature in the new window 7 in the new OS as include the search box that is located in the start menu. This allows on an easy search because in shows results instantly and groups them grouped by their category either as documents, pictures other programs.
Other notable changes are on the taskbar. The balloons that kept popping up every time on the right side o the screen can now be managed by changing the notifications settings. The version has also optimized the speed. It take a lot less time to boot by cutting but back on the processes that are run in the back ground as the system starts up. It also comes with a better peripheral device management unit to help run and install the devices or even take you to the manufacturers website for further help
However, this version has retained some of the features and commands in its predecessor OS, windows XP. According to Microsoft 3 these features include the multitasking abilities of the OS, communication and sharing of photos and emails and instant messaging services, the explorer browser that allows the user to brows the internet more easily and the ability to run windows productivity programs
Among the features and advantage that a person will get upon an upgrade to windows 7 are performance improvements of the new version which take up less memory and also allow programs to load faster. Other features include easier wireless connectivity, a better platform fro sharing files, a better well organized desktop with a taskbar that allows easier access to programs and also entertainment facilities such as windows media player 12that allows streaming of music to other devices such as the TV. The upgrade can e done after acquiring the windows 7 installation CD then installing the new version or through first upgrading to vista then to windows.
These are the specification given by Microsoft for compatibility of a system to use the new windows. If the user already uses Windows XP Mode, the system may require an additional 15 GB hard disk space and 1 GB of RAM to run windows 7. Other requirements are of a system running any other operating system are 1 gigahertz (GHz) or faster 32-bit (x86) same as 64-bit (x64) processor, 1 gigabyte (GB) RAM (32-bit) same as a 2 GB RAM (64-bit), a 16 GB hard disk (32-bit) or 20 GB (64-bit) and DirectX 9 graphics device with WDDM 1.0 or higher driver.