"The Lisa included a single parallel port, which was dropped in the Lisa 2 and MacXL. The Lisa 2 and MacXL used 2 400 kB Sony 3.5" floppy drives, and both had 10 MB hard drives. 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 graphical user interface. Aimed mainly at large businesses, Apple said the Lisa would increase productivity by making computers easier to work with. 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 (which cost half as much as the original) at the same time as the Mac. 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 Mac OS. The XL was discontinued later that year." (photo credit: John Greenleigh/Flipside Studios)

CPU
CPU: Motorola MC68000
CPU Speed: 5 MHz
FPU: none
Bus Speed: 5 MHz
Data Path: 16 bit
ROM: 16 kB of diagnostic and bootstrap code present
Expansion Slots: 3 Proprietary

Video
Monitor: 12" 720 x 360 built-in (B/W)

Storage
Hard Drive: 5 MB external (10 MB in some configurations of Lisa 2/MacXL)
Floppy Drive: two 871 kB 5.25" (one 400 kB 3.5" in Lisa2)

Input/Output
Serial: 2 RS-232
Audio Out: Continuously Variable Slope Demodulator (CVSD)
Speaker: mono

Miscellaneous
Codename: Lisa
Gestalt ID: 2
Power: 150 Watts
Dimensions: 15.2" H x 18.7" W x 13.8" D
Weight: 48 lbs.
Minimum OS: LisaOS
Maximum OS: LisaOS/MacWorks
Introduced: January 1983
Terminated: August 1986

This byte of Apple's history from Wired's, "30 Years of Apple Products."