DISPLAY SCREEN

In simple terms, the monitor is a specialised high-resolution screen, similar to a high-quality television, that displays information relating to what processing is happening inside the computer. This is referred to as outputting information. When the computer finishes processing information or requires more information, a message or prompt will be displayed on the screen. Monitors come in many types - from the simple monochrome (one colour) screen to full colour screens - and sizes. The most popular sizes for monitors are 14", 15", 17", 20" and 21". This number represents the diagonal width, in inches, from one corner of the screen to the opposite corner, and is the monitor's nominal size. The viewable size is generally less than this. Most desktop computers use a monitor with a cathode ray tube (CRT) while most notebooks use a liquid crystal display (LCD) monitor. The information displayed on the monitor is controlled by the computers video or graphics card.