The display resolution or display modes of a digital television, computer monitor or display device is the number of distinct pixels in each dimension that can be displayed. It is usually quoted as width × height, with the units in pixels, for example,1024 ×768 means the width is 1024 pixels and this example would normally be spoken as ten twenty-four by seven sixty-eight or ten twenty-four by seven six eight. A consequence of having a display is that, for multi-format video inputs. Note that for broadcast television standards the use of the word here is a misnomer. In digital measurement, the resolution would be given in pixels per inch. In analog measurement, if the screen is 10 inches high, in the case of television inputs, many manufacturers will take the input and zoom it out to overscan the display by as much as 5% so input resolution is not necessarily display resolution. The eyes perception of display resolution can be affected by a number of factors – see image resolution, one factor is the display screens rectangular shape, which is expressed as the ratio of the physical picture width to the physical picture height. This is known as the aspect ratio, a screens physical aspect ratio and the individual pixels aspect ratio may not necessarily be the same. An array of 1280 ×720 on a 16,9 display has square pixels, an example of pixel shape affecting resolution or perceived sharpness, displaying more information in a smaller area using a higher resolution makes the image much clearer or sharper. Most television display manufacturers overscan the pictures on their displays, so that the effective on-screen picture may be reduced from 720 ×576 to 680 ×550, the size of the invisible area somewhat depends on the display device. HD televisions do this as well, to a similar extent, Computer displays including projectors generally do not overscan although many models allow it. CRT displays tend to be underscanned in stock configurations, to compensate for the distortions at the corners. As of July 2002,1024 ×768 eXtended Graphics Array was the most common display resolution, many web sites and multimedia products were re-designed from the previous 800 ×600 format to the layouts optimized for 1024 ×768. The availability of inexpensive LCD monitors has made the 5,4 aspect ratio resolution of 1280 ×1024 more popular for desktop usage during the first decade of the 21st century. Many computer users including CAD users, graphic artists and video game players ran their computers at 1600 ×1200 resolution or higher such as 2048 ×1536 QXGA if they had the necessary equipment. A new more-than-HD resolution of 2560 ×1600 WQXGA was released in 30-inch LCD monitors in 2007, as of March 2012,1366 ×768 was the most common display resolution. In 2010, 27-inch LCD monitors with the 2560 × 1440-pixel resolution were released by manufacturers including Apple. Panels for professional environments, such as use and air traffic control
A 16:9-ratio television from October 2004
Difference between screen sizes in some common devices, such as a Nintendo DS and two laptops shown here.
A 640 × 200 display as produced by a monitor (left) and television.