PPI pixels per inch is the term used to define the resolution of screens such as mobile displays, computer monitor, television screen. It is used as a density measurement unit of displays which describes to the sharpness of the screen. In easy words, it pixels per inch is the number of pixels in a square inch surface. The higher the value of PPI the more detail of the image you can see. But human eye is made to see these details till a particular value after which the higher number doesn’t matter. While buying a television or mobile phone, it is important to know the pixel density as low pixels per inch will end up in a bad image quality on display screens.
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