Computer Monitors - LCD and CRT
Conventional desktop monitors use Cathode Ray Tubes (CRTs).
Most laptops - and most new desktop monitors - use Liquid Crystal Displays (LCDs).
Screen resolution is expressed in "picture elements" (pixels) as Width x Depth. For example, a standard MS-DOS VGA mode is 640 pixels wide by 480 deep - expressed as 640x480. Higher resolutions (more pixels on the screen) produce clearer pictures and more legible text provided:-
CRTs have an absolute maximum resolution, but also support many lower resolutions (i.e., show fewer pixels) without compromising display quality. (For example, an LG Model SW900B, 19" CRT Monitor has a maximum resolution of 1600x1200. It also handles lower resolutions like 640x480, 800x600, 1024x768, 1152x864, and 1280x1024.)
LCDs only really support one "native" resolution. (For example, a Samsung SyncMaster 2443BW 24" Desktop LCD Monitor has a native resolution of 1920x1200. The DELL Inspiron 8200 N1600VT Notebook uses a 15" TFT LCD display with a native resolution of 1400x1050.)
While the native resolution is akin to the "maximum" resolution of CRTs - and the display quality at that resolution can be excellent - LCD screens have a problem running applications at lower resolutions.
Computers using LCD screens have to emulate lower resolutions in one of two ways:-
More Information on Monitors
For more technical information on monitors - and purchasing recommendations - see:-
PROCON CONSTRUCTION SYSTEMS