This was a low-end office computer (*) from Fujitsu which was developed jointly with USAC Electronic Industrial Company (currently PFU).
*: An office computer is a small business computer used in an office.
The FACOM System 80, the first true office computer from Fujitsu, was announced in April 1979 as the successor of the FACOM Bm and FACOM V0III. At the time development of this computer began, OA (Office Automation) systems had begun to attract attention, and the FACOM System 80 was developed based on the design concept of "an office computer which could be used by anyone when necessary, with the same ease as a business machine". It was announced as a first step toward the office information systems of the 1980s. The machine had the following features.
(1) It employed the industry's first large-scale (10,000 gate) CMOS LSI processor, the FSSP(*). (This processor was also used in the FACOM V-830 small computer announced at the same time.) *: Fujitsu Small System Processor
(2) A Japanese language system was standard feature.
(3) Memory capacity was greatly expanded by using high-density memory elements
(FACOM Bm 48KB max., and FACOM V0III 64KB max. => FACOM System 80, 384KB max.)
This made it possible to provide a true OS for realizing multi-work processing and Japanese language processing.
Later, Fujitsu announced the FACOM System 80 Model 5, with Japan's first built-in 8-inch microdisk (a small high-performance disk unit employing an 8-inch disk developed based on a new concept). At the same time, Fujitsu announced the FACOM System 80 Model 7 as a greatly enhanced version of the previous "FACOM System 80". The FACOM System 80 Series was created by adding more models after that, including: the FACOM System 80 Model 3 (the first desk-top model equipped with a 20MB microdisk), the FACOM System 80 Model 4, 6 and 8 (which incorporated a high-capacity microdisk and other new technology), and the desk-top "FACOM 80 Model 1", the first office computer equipped with a 5-inch mini floppy disk.
|Model name||FACOM System 80||FACOM System 80 Model 7||FACOM System 80 Model 5||FACOM System 80 Model 4, 6, 8 (Abbreviated below as M4, M6 and M8)||FACOM System 80 Model 1, 3 (Abbreviated below as M1 and M3)|
|Announcement date||April 1979, ?||1980, May||1982, M1||December 1982,
M3: October 1981
|CPU||FSSP 16bit CMOS LSI processor
Memory address space 16MB max.,
virtual addressing system
|System memory mech-
(This is user area in the M1/3)
|ECC (1bit error correction, 2bit error detection)||Parity check|
M6: 20/40MB x2 (max.)
M8: 67MB x4 (max.)
|Originally had no disk (Built-in 5inch 7.5MB model was added later)|
|8inch 1 drive standard
M8: x2 (max.)
|Number of connected
(Display + Printer)
|8||(Console only)||M4: (Console only)
|Equipment type||Standalone||M4: Desk-top
(Note) The above specifications are from the time of announcement, and may have been changed due to later improvement.