SCL 3 (Question 1)

Operating system used in a desktop/laptop nowadays are Windows 8,Windows 7 and Windows Vista . An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. Operating Systems have started to pop up in a smaller computers as well. An operating system provides for basic interface and control of all the components of your computer, it builds on the very rudimentary controls established by the system BIOS.

Windows 8 

Advantages :

•  Enhanced search function.
•  Windows Live Syncing.
•  Speedy Boot Time.

Disadvantage :

•  It is difficult to move between screens.
•  The smallest size of the tiles, zoom is still too big.
•  Switching from Metro applications and desktop applications is very difficult.

Windows 7

Advantage :

•  Faster than its predecessors.
•  Allows the user to make the best use of graphic cards from the different vendors.
•  Allows the user to overcome the clutter in the desktop by introducing three new features Aero Peek, Aero shake and snap.

Disadvantage :

•  The user need to buy out additional resources such as RAM, etc to make use of them.
•  The user needs to go to the new HP solution Center if the user has got an HP multifunction printer, and its driver being  upgraded to the Windows 7, then the printer don’t response to the print commands. 

Windows Vista

Advantage :

•  Manage your knotty kids, using parental controls
•  The user will get the search result as and when the user type some letters of a particular word.
•  It has got an inbuilt tool called as Photo Gallery to manage digital photos.

Disadvantage :

•  The window appearance underwent lot of unwanted changes.
•  The price of Windows Vista Ultimate edition seems to be too high.