Dots Per Inch, or DPI, is a measurement used to indicate the resolution of printed images or digital displays. It refers to the number of individual dots that can be placed in a line within the span of one inch. Higher DPI values typically result in sharper and more detailed images, making them ideal for printing photographs or graphics. In the context of computer monitors and printers, DPI plays a crucial role in determining the quality of the output. For example, a printer with a DPI of 600 will produce finer details than one with a DPI of 300. Understanding DPI helps users choose the right equipment for their specific needs.