Is 1440x900 true 720p?
Also, what is a "good" contrast ratio for a 20" screen? Is 800:1 suitable?
Answers: that's is the no of pixel that avail on your LCD pane.
Well that no is greater than 1280x720 so it must be capable n displaying 720p signal.
800:1 is typical not great but I think it's OK. You can't expect giant contrast ratio on small size.
Here's the official text is
http://en.wikipedia.org/wiki/List_of_com...
Where your numbers come from I haven't a clue.
720p means 1280x720 resolution. You will never find a TV or computer monitor beside this exact resolution. The video resolution describes the vertical resolution.
800:1 is pretty good. It's not bleak, but it's not the best. The good LCD screen are 1000:1 or more.
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