Apple Lisa
Source: ilenta.com - Apple Lisa

Apple Lisa

The Lisa was the first personal computer to offer a graphical user interface in an inexpensive machine aimed at individual business users. The Lisa was a more advanced system than the Macintosh of this time in many respects, such as its inclusion of protected memory, preemptive multitasking, a generally more sophisticated hard disk based operating system, a built-in screensaver, an advanced calculator with a paper tape and RPN, support for up to 2 megabytes (MB) of RAM, expansion slots, a numeric keypad, data corruption protection schemes such as block sparing, non-physical file names (with the ability to have multiple documents with the same name), and a larger higher-resolution display. It would be many years before many of those features were implemented on the Macintosh platform. Protected memory, for instance, didn’t reappear until the Mac OS X operating system was released in 2001.

History of Apple Lisa is provided by wikipedia
Apple Lisa
Source: macstories.net – Apple Lisa

Apple Lisa – General information

Overview
IntroducedJanuary 1983
DiscontinuedJanuary 1984
Model Identifier1
Order NumberUnknown
Price$9,995
ColorsBeige
Weight48 Ibs.
21.772 KG
Dimensions13.8” H x 18.7” W x 15.2” D
35.05 cm H x 47.49 cm W x 38.6 cm D
Hardware
ProcessorMotorola 68000
Processor Speed5 MHz
Architecture16-bit
Number of Cores1
System Bus5 MHz
StorageExternal 5 or 10 MB Apple ProFile hard disk drive
Built-in MemoryNone
Maximum Memory2 MB
Memory Slots2 – Apple Lisa memory boards
ROM16 KB
Display
Built-in Display12”
Resolutions720 x 364 or 608 x 432 (with Screen Kit) at 60 Hz
Software
SoftwareLisa Office System 1.0
Connections
ModemNone
Serial2 – RS-232C
1 – DE-9
Audio OutContinuously Variable Demodulators (CVSD)
Display1 – RCA composite video output
Expansion Slots3 – Apple Lisa expansion slots
Media2 – Built-in 871 KB Apple FileWare 5.25-inch floppy drivers
Accesories
Keyboard76-key selectric-style, detached keyboard with 10-key pad
Power
Maximum Continuous Power270 W
Line Voltage115 or 230V AC
Related products

Source: Wikipedia, macstories, ilenta, Apple

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