IPod.

The iPod is a brand of portable media players designed and marketed by Apple Inc. and was filed on October 23, 2001.

The line of products include iPod Classic, iPod Touch, iPod Nano and iPod shuffle. The iPhone can function as an iPod but is generally treated as a separate product. Some previous models of the family and Discontinued iPod are the iPod Mini and iPod Photo (when integrated into the iPod classic line). IPod Classic stores media on an internal hard drive, while the other models using a flash memory to enable their smaller size (the iPod Mini uses a hard disk "Microdrive"). Like many other digital music players, iPods, excluding the iPod touch, can also serve as storage devices for external data. Storage capacity varies by model. The Apple iTunes software can be used to transfer music to the iPod on computers using certain versions of Apple Macintosh and Microsoft Windows. [2] For users who choose not to use the Apple software or whose computers can not run iTunes There are several open source alternatives. [3] ITunes and its alternatives can transfer photos, videos, games, contact information, e-mail, Web bookmarks and calendars to iPod models supporting those features. Apple is focused on developing its line of iPod's user interface and unique ease of use, rather than technical ability. Since September 2007, over 150 million iPod have been sold around the world, becoming the most digital music player sold.