Dual Monitr : Two monitors are better than one
You can never have enough screen space, especially when organizing and working on your digital pictures. Instead of buying a larger monitor, if you're using Windows XP, you can buy an inexpensive second monitor and connect it to your computer—instantly doubling your desktop space. Flat panel LCD monitors look great and will save room on your desk; CRT monitors also work well and can be less expensive.
also known as Multi-display, Multi-head and Dual-Monitor are synonymous terms referring to the use of multiple physical display devices such as monitors, televisions and projectors in order to increase the area available for computer programs running on a single computer system.
Contemporary versions of Microsoft Windows, Mac OS, and X Window System all support multiple monitors. Dual monitor support once depended on specialized proprietary video drivers supplied with few video cards, along with a multi-display-supporting GUI system. Support for multiple monitor configurations was added as a standard feature in Microsoft Windows in Windows 98. It has been a standard feature in all versions of Apple's Mac OS X , and was a standard feature of the first color Macintosh (Mac II) introduced in 1987.
Setting up multiple monitors can be an inexpensive way of improving computer usage. It increases the display area, although it is still limited by the size, resolution and number of the monitors. The monitors used for multi-monitor can be different types (LCD or CRT) and sizes. The operating system manages the monitors' resolutions independently.