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Annotated edit history of AppleLisa version 4, including all changes. View license author blame.
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3 JohnMcPherson 1 Named for one of its designer's daughters, the Lisa was supposed to be the Next Big Thing. It was the first personal computer to use a [GUI] (Graphical User Interface). Aimed mainly at large businesses, [Apple] said the Lisa would increase productivity by making computers easier to work with.
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4 AristotlePagaltzis 3 The Lisa had a [Motorola] [68000|680x0] Processor running at 5 Mhz, 1 MB of [RAM] two 5.25" 871k floppy drives, an external 5 MB hard drive, and a built in 12" 720 x 360 monochrome monitor. At $9,995 it was a plunge few businesses were willing to take. When the Macintosh came out in 1984 for significantly less money, it eroded the Lisa's credibility further. Realizing this, Apple released the Lisa 2 at the same time as the Mac. The Lisa 2 cost half as much as the original, replaced the two 5.25" drives with a single 400k 3.5" drive, and offered configurations with up to 2 MB of [RAM], and a 10 MB hard drive.
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4 AristotlePagaltzis 5 In January 1985, the Lisa 2/10 was renamed the [Macintosh] XL, and outfitted with ~MacWorks, an emulator that allowed the Lisa to run the [MacOS]. The XL was discontinued later that year.
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7 (description pilfered from http://www.apple-history.com/)