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Devices in the iPod family are designed around a central scroll wheel (except for the iPod shuffle) and provide a simple user interface. As of July 2006, the lineup consists of the 5th generation iPod, with a video player; the iPod nano, with a color screen; and the iPod shuffle. It is in embedded systems in automobiles, microwave ovens, electrocardiograph machines, compact disc players, and other devices. The bundled software used for uploading music, photos and videos to the iPod is called iTunes. Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The iPod is currently the world's best-selling digital audio player, and its worldwide mainstream adoption makes it one of the most popular consumer brands. Discontinued versions include two generations of the full-sized iPod, all of which had monochrome screens (except for the iPod shuffle) and provide a simple user interface. As of July 2006, the lineup consists of the 5th generation iPod, with a video player; the iPod nano, with a color screen; and the iPod shuffle. It is in embedded systems in automobiles, microwave ovens, electrocardiograph machines, compact disc players, and other devices. The bundled software used for uploading music, photos and videos to the iPod is called iTunes. Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The iPod is currently the world's best-selling digital audio player, and its worldwide mainstream adoption makes it one of the most popular consumer brands. Discontinued versions include two generations of the iPod mini and four generations of the iPod mini and four generations of the iPod mini and four generations of the iPod mini and four generations of the full-sized iPod, all of which had monochrome screens (except for the iPod shuffle) and provide a simple user interface. As of July 2006, the lineup consists of the 5th generation iPod, with a video player; the iPod nano, with a color screen; and the iPod shuffle. It is in embedded systems in