Herb Johnson last updated April 10 2008. (c) Herb Johnson 2008
See this Web page for discussion of Dr. John Torode's Digital Systems of mid-1970 and his early S-100 and CP/M floppy controller product. These are research notes on the history of Digital (Micro)Systems assets and the companies which owned them.Web research led to documents and books, which led to more Web searches. As of the last update, the trail of acquisitions seems to be as follows below.
- Herb Johnson
Digital Systems became Digital Microsystems sometime in the late 1970's. (Correspondence with Torode in 2008)
Digital Microsystems eveloped products for networking called HiNet (Hierachical INTegration network). (Assorted references.)
Digital Microsystems poduced the "Fox" or DMS-3F in 1982. A Z80 networked portable, also competed with Osborne. DMS-15 had hard drive. (from old-computers.com Web site http://www.old-computers.com/museum/computer.asp?st=1&c=593 )
Digital Systems or Digital Microsysytems was sold to a UK firm in 1986, had staff of 200. (Correspondence with Torode in 2008)
"New Products" column in IEEE "Micro" Volume 5, Issue 2, April 1985 Page(s): 95 - 100 - Mimic Master
"Product Highlights" pages of March 1985 issue of "IEEE Software" magazine:
DMS 200 Network Master, HiNet LAN systems from Digital Microsystems Inc. 1840 Embarcadero, Oakland, CA 94606. "Entry level network master has 200ns access time and softare and storage options to provide compact management of multiuser applications on HiNet systems; $4995
* From USA Defense Property Accountability System - IT manufacture codes:
IT MANUFACTURER CODES IN ORDER BY CODE AS OF 13 NOVEMBER 2007 DMR DIGITAL MICROSYSTEM, INC OAKLAND CA
* From "Computerized manufacturing automation: employment, education, and the workplace." 1984, NTIS publication #PB84-196500. Office of Technology Accessment, US. Congress. OTA-CIT-235, April 1984 LC 84-601053, page 300:
Regarding micro-based systems and the small-firm market for Manufacturing Resources Planning or MRP. "Digital Microsystems INc, for example, offers an MRP system aimed at companies with up to $25 million in sales. The system, offered with training, includes a local-area network, MRP software, and software for office automation and business graphics." A possible reference for this may be: "Micro Software brings material control to the Desk Top" in Modern Materials Handling, Jan 23 1984.
* From IEEE Micro, product summary page, June 1984 p 81:
Digital Microsystems Hinet PC adapter, "one slot board adds 64K RAM, Z80 processo and an RS-232 port to the IBM PC, permitting compatibility with Hinet member using either CP/M, CP/M-86 or MS-DOS. $495".
* From IEEE Micro, Recent Microsystems Announcements, page, Jan 1984 p 81:
DMS-816, IBM PC-compatible system runs MS-DOS or CP/M programs on the Hinet LAN and consists of a 12-inch monitor, dual Z80A and 8089 processsors, 256K RAM, 500K baud RS-422 network port...optional master station with 9-inch screena nd detatchable keyboard provides floppy- and hard-disk storage of programs. Priced at $1695.
From book "Lans Explained: A guide to local area networks" by W. Scott Currie, Edinburgh University Computing Service, pub. John Wiley & Sons and Ellis HOrwood Ltd. and Halsted Press. 1988, 1989. Pages 66-67:
HINET
"Apricot Computer's HINET is a typical example of a shared filestore network, amied at supporting a range of PC'S from different manufacturers, particularly IBM and Apricot. Attachment to the LAN is via interface boards which slot onto the computer's internal bus rather than by use of the RS-232 ports. The heart of the system is the "network controller", which comprises a hrad disk storage unit with a capacity of up to 184 Mbytes, a tape streamer and a system printer; these can be shared over the LAN by up to 63 stations. The LAN is bus topology and the raw data rate is 500Kbit/s. The controller treates all the stations as slaves and use a polling technique to control access. The mediub can either be a ribbon cable or twisted pairs."
"HINET is amimed at the office automation market, and liek other similarity targeted LANs offers many features partiularly attractive to that market. For example, data integrity is obviously important, and HINET has an optional duplicate disk system which copies every disk access to the main controller....Another important feature...is access to corporate wide area networks. This is achieved through "gateway stations" which support for example IBM 3270 protocols. Links to the telex newtork and dial-up access to remote computers are also offered."
"Finally, Apricot Computers, in commone with many other LAN manufacturers, make a range of workstations whichg have the necessary attachment hardware and software built-in. In the case of HINET product, they range from IBM-PC compatibles to advanced graphics stations."
Google books says references to Digital Microsystems Inc occurs in:
Microcomputer Market Place, 1985, p 421 ISBN 0835219402 R. R. Bowker Co., pub.
Linked Local Area Networks by Alan James Mayne, 1986, Wiley, page 64 - on HiNet;
Guide to Local Area Networks - Page 143, T. J. Byers, Prentice-Hall. 1984.
A Manager's Guide to Local Networks, page 82. by Derfler, Stallings. 1983 Prentice-Hall
Interface Age, V9 no. 7-12 1984 page 95: "HiNet/PC adapter card for IBM PC's.
Computer and Control Abstracts, V17 1982 abst 1-13301, "Digital Microsystems' DSC-2"
Computer Decisions, V16 1984 Jan-Apr p 204: "Digital Microsystems DSC-2....benchmark testing.."
http://www.britishtelephones.com/hinet.htm Siemens HiNet and NiCom VS1500 and VS1600, ISDN, from 2004
Don't confuse DMS HiNet product with HINet, with Hitachi Information Network. "established in 1984..."
A name like "digital systems" is simply too broad to search for on the Web. A few hits were found as follows:
"Walker's manual of western corporations" for 1975 p 1124, or 1974 p 909. or 1973 p982. "Acquisitions include digital systems inc. 1965..."
"Air Cargo" trade magazine, page 22, V 11 1967 Jan-June, something about "The company is also using the Data Cube System, manufactured by Detecto Scales, Inc., to obtain weight and cube information through a Digital Systems, Inc.,"
According to Wikipedia as of April 2008, Apricot COmputers Ltd. was a UK computer manufacturer previously known as "ACT" or Applied Computer Techniques. They used the name "Apricot" from about 1985 to 1990. In 1990, acquisitions and spinoffs created companies such as "ACT Systems Integration", "ACTApricot", "ACT Logsys" and an acquisition of ITL or "Information Technology Limited". Apricot was ultimately bought out by Misubishi and closed down.
The 1990 reorganization which restored the Apricot name, is referenced in an article on Apricot for "CBR" or "Computer Business Review Daily News" issue 1339, 10th Jan 1990. The article mentiones the "acquired expertise of ITL, Sigmex, and Logsys Ltd". The article was archived on the http://www.cbronline.com Web site, which has many articles on Apricot through the 1980's and 1990's. Those articles suggest Mitsubishi bought Apricot's assets in 1990, only to auction them off by 1999.
Apricot made a number of CP/M machines and later IBM-PC "semi compatibles" as the F series, such as the F1, F2, F10, and others. Additional machines included the XEN and the VXFT. The last products of the company were Pentium MMX based.
A Web site for Apricot and ACT current owners is http://www.actapricot.org as of April 2008. The site has a more substatial history of Apricot. There is a Yahoo discussion group at http://tech.groups.yahoo.com/group/actapricot/messages called "actapricot".
A number of Apricot products are described on actapricot.org site's history page. The page concludes with a note taken from August 1999 in "Electronics Weekly" that "Mitsubishi Electric is auctioning off its Apricot Computers manufacturing site in Glenrothes, Scotland." It says the auction would be September 7th, and that Apricot was closed in January 1999 with 400 jobs lost.
A search for "hinet" on the CBR publication Web site at http://www.cbronline.com yields two results from their 20-year online archive:
"Apricot Integrates Digital Microsystems'' Products With Its Own In New Offerings" (Issue 683 for 18 May 1987) http://www.cbronline.com/article_cg.asp?guid=B3775830-0CDB-4842-962E-1ACAEF964B34
"Apricot Buys Extel''s Digital Microsystems For Ukp2m" (issue 650 for 27 Mar 1987) http://www.cbronline.com/article_cg.asp?guid=53501964-C2C4-4498-B1D3-D9B7AFBD39A8
The March 1987 article refers to the sale of "Digital Microsystems Ltd networked microcomputer business. Extel has found a willing buyer in the shape of Apricot Computers Plc, which has agreed in principle to pay UKP1m cash on April 1 with another UKP1m on January 1, 1988 for the company....Apricot intends to continue to support the HiNet architecture that networks MS-DOS or CP/M workstations for the present, describing it as "part of its systems strategy". British Telecom is said to be DML's biggest customer, OEM and distributor.
The May 1987 article says in its entirity: "Apricot Computers Plc has moved quickly to integrate the products of its Digital Microsystems acquisition from Extel Group Plc with its own: it is offering a version of its 80386 machine as a server on the Digital Microsystems HiNet; the DMS 4000 has 2Mb 32-bit RAM, 70Mb file server and 20Mb disk server; the company is also offering a new 10MHz 80286 HiNet XA diskless workstation which comes in at UKP1,400."
This was, or is, a large UK company which seems to have holdings in media and computing. There are some financial records of this company in the National Register of Archives in the UK, at http://www.nationalarchives.gov.uk . There is a reference to the "BAC Newsletter, June 1988". Apparently Extel Group was acquired by United Newspapers Group of the UK in 1987.
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