i want to buy an l.c.d t.v . what does the 720p or the 1080p mean. witch is better?

Answer 1

720p and 1080p are the lines of resolution that the TV is capable of displaying. Although 720p is fine, 1080p will blow it out of the water as far as detail, clarity and over all HD experience. If price is not a concern, then you should not even consider the 720p.

Answer 2

720 mean the no of pixel horizontal (the more the better) while the 'p" means progressive and the "i" interlaced.
Progressive scan gives less flickering but lower frames per second while the interlaced is used for high fps video
so 1080p is better for films
and 1080i is better for sports and other video that need a high refresh rate
1080 is know as full HD but lcd tvs with full hd are usually very expansive while 720p are cheaper and still very good

Answer 3

The numbers 720 and 1080 refer to the amount of scan lines, or the lines the electron gun "scans" to replicate each frame of video. The regular old-style NTSC television (a standard used in the US, Canada and so forth) has 525 of them. The "p" stands for progressive scanning, which means the image is formed by the electron gun scanning the lines from top to bottom, much like you're reading this now. When you see "i," it stands for interlaced scanning. It would be the equivalent of reading every other line from top to bottom, then reading the ones not read before from bottom to top (a sort of zigzag.)

It gets confusing, but I hope that helps. You'll also want to check what format most of your media (DVDs, cable/satellite and whatnot) are in. Most seem to be in 1080i from what I've seen. That can affect quality, and if you're going to invest money in something as nice as an LCD TV, it's best to make sure everything fits. Good luck!