Dots per inch (DPI) is
|“||[a] measure of the resolution of scanners, printers, and graphic displays. The more dots per inch, the more detail can be displayed in an image.||”|
A typical CRT screen provides 96 dpi, which provides 9,216 dots per square inch (96x96). When a paper document is scanned, the resolution, or level of detail, at which the scanning was performed is expressed in DPI. Typically, documents are scanned at 200 or 300 DPI.