Difference between Digital-TV and HD-TV?

Digital TV is plain digital, and HD is the High Definition version. HD is obviously more clear and sharp but the digital suffices for me, as it's a vast improvement on the old style TV screens. Brightest Blessings.

Resolution Aspect ratio VIDEO formatted support!!! All THE ABOVE factors are drastically advanced in hDTV!!

Digital tv is like cable tv. High definition tv is just waht it says. high definition with a better picture and sound quality.

HDTV is Digital TV. but not all DTV is HDTV. Digital TV can be 480p (considered "enhanced definition TV"), or 720p or 1080i (both HDTV). If you already have and HDTV set and you are already using it to watch over the air DTV channels you will not see a change. You will however see the analog channels disappear. Cable and satellite users won't see much of a change, if any. These rules don't apply to cabble, expect that cable has to supply the local broadcast stations channels.

HD TV is like normal tv unless you have a HDMI cable which goes in the back of what you want to go in something like SKY+ or Virgin. HD TV has better sound quility and better picture. So there. LOL took ages to write!