The current iPod line. From left to right: iPod
Shuffle, iPod Nano, iPod Classic, iPod Touch.
Portable Media Player (PMP)
Over 151,000,000 worldwide
as of April 2008
iPod is the brand of portable media players
designed and marketed by Apple Inc. and
launched on October 23, 2001 (2001-10-23).
The product line-up includes the hard drive-
based iPod Classic, the touchscreen iPod
Touch, the video-capable iPod Nano, and the
compact iPod Shuffle. The iPhone can func-
tion as an iPod but is generally treated as a
separate product. Former iPod models in-
clude the iPod Mini and the spin-off iPod
Photo (since reintegrated into the main iPod
Classic line). iPod Classic models store media
on an internal hard drive, while all other
models use flash memory to enable their
smaller size (the discontinued Mini used a
Microdrive miniature hard drive). As with
many other digital music players, iPods, can
also serve as external data storage devices.
Storage capacity varies by model.
Apple’s iTunes software can be used to
transfer music to the devices from computers
using certain versions of Apple Macintosh
and Microsoft Windows operating systems.
For users who choose not to use Apple’s soft-
ware or whose computers cannot run iTunes
software, several open source alternatives to
iTunes are also available. iTunes and its al-
ternatives may also transfer photos, videos,
games, contact information, e-mail settings,
Web bookmarks, and calendars to iPod mod-
els supporting those features. As of Septem-
ber 2008, more than 173,000,000 iPods had
been sold worldwide, making it the best-
selling digital audio player series in his-
History and design
The iPod Classic 5G (right) and 6G (left)
showing the improved album view
The iPod line came from Apple’s "digital hub"
category, when the company began creat-
ing software for the growing market of per-
sonal digital devices. Digital cameras, cam-
corders and organizers h