DPI and Dot Pitch
DPI - Dots Per Inch
DPI, in the computer technology, is a unit of the resolution of an input or output device. The abbreviation stands for dots per inch or dots per 2.54 cm.
Examples:- A mouse (computer) often has a resolution of 600 DPI
- A scanner may have a resolution ranging from 150 DPI to 4800 DPI
- A screen : resolution from 72 to more than 200 DPI
- A laser printer has a resolution of 300, 600, 1200 or more DPI
- A fax may have a resolution of 150 to 300 DPI
Dot Pitch
The dot pitch is a characteristic of a display to indicate the accuracy. This happens in both traditional CRT monitors and the LCD screens.
The dot pitch, measured in millimeters, is the diagonal distance between two pixels of the same color taken. The smaller this gap, the sharper the picture. A dot pitch of 0.28 mm is a default value for an average screen. Professional screens can have a dot pitch of 0.26 mm or 0.25 mm. There are now screens that have a dot pitch of 0.22 mm for the true connoisseurs.
Some manufacturers of screens changed the definition to a measurement of horizontal distance instead of the diagonal. This complicates the comparison of different screens.