The 4420 will also offer "random erase technology" that lets you use a CD-RW disc just like a floppy or hard disk -- adding or deleting individual files at any time.

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Sorry, it's about to get all geeky in here: The longitudinally midmounted V8 transfers power to the limited-slip e-diff through a Koenigsegg-designed seven-speed gearbox, with a twin-disc dry clutch and an 11-disc wet clutch arranged sequentially, working cooperatively, rather like a dual-clutch automated manual transmission.

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And that smooth drag comes from the graphite-impregnated cork disc, which acts like a brake pad, slowing it down without locking.

FORBES

The mp3 ended the era of the compact disc, first through illegal file-sharing services like Napster, later through legal downloading destinations like the iTunes Store.

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The hybrid disc works by making the Blu-ray layer act like a two way mirror, reflecting enough light for Blu-ray playback, but letting enough light through for HD DVD operation.

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And the best part of Best Buy's Rewards Zone, she says, is the feature that notifies members of price specials available only to them, along with little extras, like a free holiday-sounds compact disc in December.

FORBES

Its face is a large disc, painted dark blue, with what looks like a red-hot explosive force emanating from the centre.

ECONOMIST: Craftmade timepieces

This initially looked like a dead-end, because after booting the disc simply threw a Windows logo onto two of my three monitors and hung there.

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