+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. 

+The Lisa had a [ Motorola] [ 68000|68000] 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. 

+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.