Go to your local Best Buy or Circuit City
.
Think of it this way, SD is 480i (interlaced 640*480). HD is either 720p (progressive 1280*720) or 1080i (interlaced 1920*1080) or, the new technology, 1080p (progressive 1920*1080). [Current DVD is 480p - progressive 640*480]
Interlaced meaning it draws one half the lines and then comes back and draws the other half within a few milliseconds, Progressive meaning it draws all the lines at once.
Looking at those resolutions, and the far greater number of pixels, HD is far more clear. Looking at one at your store will drive it home.

Think of it this way, SD is 480i (interlaced 640*480). HD is either 720p (progressive 1280*720) or 1080i (interlaced 1920*1080) or, the new technology, 1080p (progressive 1920*1080). [Current DVD is 480p - progressive 640*480]
Interlaced meaning it draws one half the lines and then comes back and draws the other half within a few milliseconds, Progressive meaning it draws all the lines at once.
Looking at those resolutions, and the far greater number of pixels, HD is far more clear. Looking at one at your store will drive it home.
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