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I'm working for a Dentist that would like to have a dual display. One that he could see up close and one that the patient can see. I know you can use two cards to expand the desktop, but can I get both monitors to display the same image? I think I have seen cards with two outputs. Is this the best way to do this? I guess it's kinda of a dumd question, but I havent worked with any of this stuff and don't know what I need.
Yes, it will work. If you don't tick the "Extend Windows Desktop onto this monitor" box, the same screen is shown on both displays.
Depends on the operating system. Win 98, then use two cards that are compatible. Above Win98, use a dual head card. Nvidia makes some very affordable dual head display cards which work well with Windows, 2000, XP.
The software included gives you many setup optins.
In addition to the above the newer cards on the market often come with dual interfaces to make your life a little bit easier.