The BattleTag is a player-created name that serves as your Battle.net title. It is used in all Blizzard games, as well as on their forums and community websites. Players create a name of up to 12 characters, and this becomes their official title on Battle.net. Your BattleTag is what other players see on your Diablo III characters, and what appears on their Friends List.
A digital camera records and stores photographic images in digital form. Many current models are also able to capture sound or video, in addition to still images.
Analog cameras are cameras that generate a video signal in analog format. The analog signal is digitized by an image acquisition device. The video signal is based on the television standard, making analog the most common standard for representing video signals. You may have heard the term charge-coupled device (CCD), and wondered how it relates to the analog video signal.