The number of distinct pixels in each dimension that the screen can display, usually quoted as width × height with the units in pixels.
It is usually quoted as width × height, with the units in pixels. The screen resolution signifies the number of dots (pixels) on the entire screen. For example, a 640-by-480 pixel screen is capable of displaying 640 distinct dots on each of 480 lines, or about 300,000 pixels. This translates into different dpi measurements depending on the size of the screen. For example, a 15-inch VGA monitor (640x480) displays about 50 dots per inch.