A beginner's guide to DPI, the stat that measures how fast your computer mouse can move

DPI stands for "Dots Per Inch," and it determines how quickly your mouse cursor moves across the screen when you move your ...
Ars Technica

Scanner resolution (Why can't I scan at more than 600dpi?)

So I'm using Windows Vista64 with a shiny new Cannon 8800F scanner which has an optical resolution of 4800x9600 dpi. When I go to scan (using either Photoshop Elements or Paint.NET) the highest ...