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The full-sized model stores media on a built-in hard drive, while the smaller iPod nano and iPod shuffle use flash memory. Devices in the iPod family are designed around a central scroll wheel (except for the iPod photo). 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 hardware of a computer is infrequently changed, in comparison with software and data, which are "soft" in the sense that they are readily created, modified or erased on the computer. Personal computers, the computer hardware familiar to most people, form only a small minority of computers (about 0.2% of all new computers produced in 2003) Market statistics. 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. The bundled software used for uploading music, photos and videos to the iPod is called