website/content/museum/holborn-9100.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
HOLBORN 9100	Computers	Professional Computer	Netherlands	1981	Z80-A	name company company_name specs tabs adverts links comments oc_id source 9100 /companies/holborn HOLBORN label value NAME 9100 label value MANUFACTURER Holborn label value TYPE Professional Computer label value ORIGIN Netherlands label value YEAR 1981 label value BUILT IN LANGUAGE None label value KEYBOARD Full-stroke keyboard with numeric keypad and function keys label value CPU Z80-A label value SPEED 4 Mhz. label value RAM 72 KB expandable to 220 KB label value ROM unknown label value TEXT MODES unknown label value GRAPHIC MODES unknown label value COLORS Monochrome label value SOUND unknown label value BUILT IN MEDIA 2 x 8'' 1.2 MB floppy disc drives. Optional 30 MB hard disk label value OS Holborn OS or CP/M label value POWER SUPPLY Built-in power supply unit label value PRICE About $10,000 for a full-sized version adverts links title subtitle text image HOMO-COMPUTERUS This image is from a brochure of a Dutch exhibition called "The office of the future" Courtesy of the **Computer museum of the University of Amsterdam** null title url text Allard's Computer Museum Groningen http://www.computermuseumgroningen.nl/holborn/holborn.html More detailed info here with good pictures author date text Neil macPherson (UK) Saturday 27th February 2021 The info text states that the Holborn 9100 had 64k ram and needed to use bank switching,this is not true because 64k ram is the maximum amount of memory that an 8 bit proccessor can access. author date text Yan Monday 2nd December 2019 The monitor design looks like something coming out from an early 1970s sci-fi movie. It''s kind of scary for me. author date text Allard (Groningen The Netherlands) Tuesday 24th January 2006 For more pictures and details see the url Greetings, Allard author date text linkman (Slovak republic) Thursday 21st April 2005 heh nice design of monitor 749 url date https://web.archive.org/web/20230529195224/http://www.old-computers.com/museum/computer.asp?c=749 2023-05-29

The Holborn System 9100/9200 computer was a Dutch product ("born in Holland") consisting of a science-fiction style desk-top display/keyboard unit, a processor box with two or four 8" floppy drives and a printer. The processor was a Z80 with 64 KB of address space.

There were two versions : the larger one used a proprietary multi-user operating system, one feature of which was the use of a lightpen for much the same purposes as today's mouse. The smaller machine used CP/M without lightpen interaction. The computer was mainly sold to small companies for administration and bookkeeping purposes.

The machine's hardware was designed by H.A. Polak, the console by Vos Industrial Designers. The disks and the system electronics were in a separate refrigator-sized housing (a desktop box for the smaller system); the console shown in the picture mainly contains a converted MicroBee terminal.

The Holborn company was founded in 1979, it's head office was in Holten (Hol born). The company has been active until 1983, when it bankrupted. Like most manufacturers of computer systems of original design around the world, it hasn't survived the competition of IBM and the IBM-PC-clone builders. About 200 machines were sold, 50 of them of the larger variety.

Thanks to the Computer museum of the University of Amsterdam for text and pictures.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.