Resolution

The resolution is the smallest representable unit from which an image is composed. These picture elements or pixels are called dpi, and ppi called lpi.

1. In input and output devices such as scanners, monitors, printers, digital cameras, graphics cards, etc. the resolution is essential for detail recognition. The resolution indicates how many are next to each other Lines can be reproduced separately recognizable. The resolution of the screen is in points ppi (points per inch) or lines (lines per inch) and applies to the horizontal and vertical Direction. For screens, this information refers to the entire screen size. On the print edition the resolution is called dpi (dots per inch).

2. In analog technology, the resolution is made clear by the ratio of two levels. This is done with four poles by the ratio of the smallest to the largest input or output voltage. Usually, the resolution is given on a logarithmic scale in dB.