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HDTV: A guide for the perplexed

Generally speaking, just about everything today connects to your TV via HDMI. Your antenna or cable still comes through coaxial wiring, but that ends in your TV or your cable box, and everything spit out from there travels via a single HDMI cable, carrying both audio and video, content protection and all. The HDMI factor does simplify TV purchases a bit, but it still leaves some key questions for us to ponder. Among these questions are: How big a screen do I need? What are the differences between panel types? Does it matter what's being watched? What about glare? What's the difference between 720p and 1080p?

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arstechnica.com
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