The iPod is a brand of portable digital media player designed and marketed by Apple Computer. Devices in the iPod family provide a simple user interface designed around a central scroll wheel (with the exception of the iPod shuffle). The standard iPod model stores media on a built-in hard drive, while the smaller iPod shuffle and iPod nano use flash memory. Like most digital audio players, an iPod can serve as an external data storage device when connected to a computer.
As of April 2006, the lineup consisted of the fifth-generation iPod, which has video playback capabilities, the iPod nano which has a color screen, and the iPod shuffle; all three versions were released in 2005. The iPod is currently the world's best-selling digital audio player. The bundled software used for uploading music, photos, and videos to the iPod is called iTunes. A music jukebox application, iTunes stores a comprehensive library of the user's music on their computer, and can play and rip music from a CD. The most recent incarnations of iPod and iTunes have video playing and organization features.