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IPod Shuffle

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IPod Shuffle

The iPod Shuffle (stylized and marketed as iPod shuffle) is a discontinued digital audio player designed and formerly marketed by Apple. It was the smallest model in Apple's iPod family, and was the first iPod to use flash memory. The first model was announced at the Macworld Conference & Expo on January 11, 2005; the fourth- and final-generation models were introduced on September 1, 2010. The iPod Shuffle was discontinued by Apple on July 27, 2017.

Released on January 11, 2005, during the Macworld expo, the first-generation iPod Shuffle weighed 0.78 ounces (22 g), resembled a pack of chewing gum sticks, and was designed to be easily loaded with a selection of songs and to play them in sequential or random order.

It used the SigmaTel STMP35xx system on a chip (SOC) and its software development kit (SDK) v2.6, a flash memory IC, and USB rechargeable lithium cell. The STMP35xx SOC and its software was the most fully integrated portable MP3 playback at release time and SigmaTel was Austin's largest IPO (2003) capturing over 60% of flash based MP3 player world market share in 2004. In 2005, peak iPod first-generation Shuffle production occurred at a hundred thousand units per day, at the Asus factory.

It lacks a display, click wheel, playlist management features, and the games, address book, calendar, alarm, and notes capability of larger iPods. Due to the codec not being ported, it is incapable of playing Apple Lossless and AIFF audio files. The iPod Shuffle series also lacks a real-time clock; therefore, it does not update the "Last Played" value in iTunes.

The 1 GB model was advertised as capable of holding up to 240 songs (based on Apple's estimate of four minutes per song and 128 kbit/s AAC encoding). To cater to the limited capacity and intended usage scenario, two new features were added to iTunes: AutoFill, which selects songs at random from a user's music library (or from a specific playlist) and copies as many as would fit into the iPod Shuffle's storage - available as a supplement or replacement to manual selection; and an option to automatically transcode audio files of higher specifications to 128 kbit/s AAC-LC while transferring them (which would remain exclusive to the iPod Shuffle series until iTunes 9.1). Furthermore, older versions of iTunes allowed an iPod Shuffle playlist to be viewed and changed while the unit is not connected; changes would be synchronized the next time the unit is connected. However, this functionality was removed in iTunes 7.

Due to superior audio technology in the SigmaTel STMP35xx SOC and SDK, the first generation had a better bass response than a fourth-generation iPod, according to a review published days after its release.

The front of the iPod Shuffle has buttons for Play/Pause, Next Song/Fast Forward, Previous Song/Fast Reverse, and up and down volume adjustment. On the reverse, it features a battery level indicator light (activated by a button) and a three-position switch to turn the unit off or set it to play music in order or shuffled. It plugs directly into a computer's USB port (either 1.1 or 2.0), through which it also recharged its battery, which has an expected life of around 12 hours. The USB plug has additional pins for proprietary accessories and, when not in use, can be hidden beneath a cap. A second cap, included with the unit, has a lanyard attached which allows the iPod Shuffle to hang around the user's neck.

As both already supported by its larger relatives and suggested by its design, the Shuffle can also be used as a USB flash drive - a feature further facilitated by the dropping of "Macintosh" (HFS Plus) format: all Shuffles are formatted to FAT32 regardless of the operating system used for restoring them. iTunes also allowed users to reserve part of the capacity for storing files, by limiting the space that would be used for storing music.

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