Hard to believe, looking at the modern Web, that playing video clips on a computer was once reserved for the jetpack-wearing future. But then, on 2 December 1991, Apple released QuickTime 1.0. Twenty years on, QuickTime can barely remember when it was a much smaller window. follow link
Find Your Mac's Serial Number
Want to check your Mac's serial number quickly and easily? Select About This Mac from the Apple menu, and click on the text directly below "Mac OS X" that reads "Version 10.x.x." Click once and you'll get a build number which is more specific information about the software. Click twice, and you'll get your Mac's serial number.
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QuickTime Turns 20