Assuming you mean a 'file server' - In simple terms, it's a fast computer with a super-sized hard-drive. Think of it as comparing the amount of text in a paperback - with the text in the entire book stock of your local library !
A screen saver file called any_name.saver can be double clicked and it will offer you the choice of installing for all users on a computer or just for a single user account. That's all there is to it.
a screen saver
Try going to Menu > Tools > Themes > Power Saver > Animation Options > Change > Animation File, then select the file you want. Set the other settings to how you want them. The animation should come on after 60 seconds.
If you don't leave your computer open for very long, I'd say just forego getting a screen saver. Since you won't really enjoy seeing it much, it would be pointless to use up space on your hard drive for a screen saver.
That would be the screen saver.
A screen saver is the thing when you turn on your computer and it says internet. BUT the SCREEN SAVER is the thing BEHIND where it says internet. Like the picture.
You're probably thinking of the 'screen saver'.
A library file on a computer is the user's personal file. It could be a series of pictures downloaded to the computer, documents scanned into the computer, or a music file.
To open a Lisa file on your computer, you can use a program that supports the file format or convert the file to a more common format that your computer can open.
a grandfather file is the oldest file on the computer...
The area with the screen saver and all of those little icons is the desktop.
The file extension is the two, three, or more letter code that is after the period in a computer file name. It is used to "tell" the computer what type of file it is and what program on your computer will "open" or "run" it.