Moreimportant, the iPad2alsohasvideomirroring, ensuring thatonce you have connected the device to theHDMIadapter, the iPad willdisplay the contentsofits screen onan externalmonitor.
Both also give you the advantage of hooking your TV up to your computer (pending, of course, that it has DVI-out, and you happen to have a DVI-to-HDMI adapter, if necessary).
Hooking up the iPhone, iPad or iPod touch wirelessly via Apple TV or to a high-definition TV by using an HDMIadapter means vjay for iPhone mixes can easily be beamed onto the big screen for friends and family to marvel at.