Diablo Data Systems was a division of Xerox created by the acquisition of Diablo Systems Inc. for US$29 million in 1972,[1][2] a company that had been founded in 1969 by George E. Comstock, Charles L. Waggoner and others.[3][4]
The company was best known for the HyType I and HyType II typewriter-based computer terminals, the Diablo 630 daisywheel printers,[5] as well as removable hard disk drives that were used in the Xerox Alto computer and resold by DEC as the RK02 and RK03.[6]
The RK02 and RK03 drives that Diablo made for Digital Equipment Corporation (DEC) was described by DEC as "stores digital data in serial format on IBM 2315 type disk cartridges." They differed from what DEC later manufacturered for itself, as the "RK04 and RK05 use voice coil head positioning, and the RK02 and RK03 use rack and pinion head positioning."[7]: p.1-4
The RK02/RK04 were low density and stored 600K 16-bit words, whereas the RK03/RK05 store 1.2 megabytes of 16-bit words. By using "12 sectors of 128 words (low density) or 256 words (high density)" and "203 cylinders of 2 tracks per cylinder" the capacity was 1.22 megabytes or 2.45 megabytes respectively.[8]
Diablo also made full computer systems as well as printers.[9]
Diablo systemsedit
Xerox Diablo 3200
The Xerox Diablo 3100 was among the complete computing systems sold by Diablo.[10]
Diablo printersedit
Among the models for which Diablo was known were the 9R87201,[9] the HyType I (1973)[11] and the HyType II. Some of the printwheels were plastic, others were "metalized."[12] Also included were the Diablo 630 and 635.[13]
Referencesedit
^Alexander R. Hammer (March 14, 1972). "Xerox to Acquire Disk-Drive Maker For $28-Million". The New York Times.
^Xerox Factbook 2003-2004 2006-11-16 at the Wayback Machine, p.43
^Schultz, Brad (October 2, 1978). "Business Mini Weighs 65 Pound - What is Durango?". Computerworld. Vol. XII, no. 40. CW Communications, Inc. pp. 1, 4. Retrieved June 13, 2017.
^Thom Hogan (March 1984). "Creating a letterhead with your daisywheel printer". Atari Magazine (Creative Computing). Vol. 10, no. 3. p. 202.
Comstock, George E. (August 13, 2003). "Oral History of George Comstock" (PDF). Interviewed by Hendrie, Gardner. Mountain View, California, USA: Computer History Museum. CHM X2727.2004. (PDF) from the original on March 23, 2017. Retrieved March 23, 2017.
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diablo, data, systems, division, xerox, created, acquisition, diablo, systems, million, 1972, company, that, been, founded, 1969, george, comstock, charles, waggoner, others, typedivisionindustrycomputerpredecessordiablo, systems, founded1969, years, 1969, cup. Diablo Data Systems was a division of Xerox created by the acquisition of Diablo Systems Inc for US 29 million in 1972 1 2 a company that had been founded in 1969 by George E Comstock Charles L Waggoner and others 3 4 Diablo Data SystemsTypeDivisionIndustryComputerPredecessorDiablo Systems Inc Founded1969 54 years ago 1969 in Cupertino CaliforniaDefunct1972 51 years ago 1972 FateAcquired by XeroxParentXerox Metal Daisy Wheel for Xerox amp Diablo printersThe company was best known for the HyType I and HyType II typewriter based computer terminals the Diablo 630 daisywheel printers 5 as well as removable hard disk drives that were used in the Xerox Alto computer and resold by DEC as the RK02 and RK03 6 Contents 1 Overview 2 Diablo systems 3 Diablo printers 4 References 5 Further readingOverview edit nbsp removable disk cartridgeThe RK02 and RK03 drives that Diablo made for Digital Equipment Corporation DEC was described by DEC as stores digital data in serial format on IBM 2315 type disk cartridges They differed from what DEC later manufacturered for itself as the RK04 and RK05 use voice coil head positioning and the RK02 and RK03 use rack and pinion head positioning 7 p 1 4 The RK02 RK04 were low density and stored 600K 16 bit words whereas the RK03 RK05 store 1 2 megabytes of 16 bit words By using 12 sectors of 128 words low density or 256 words high density and 203 cylinders of 2 tracks per cylinder the capacity was 1 22 megabytes or 2 45 megabytes respectively 8 Diablo also made full computer systems as well as printers 9 Diablo systems edit nbsp Xerox Diablo 3200The Xerox Diablo 3100 was among the complete computing systems sold by Diablo 10 Diablo printers editAmong the models for which Diablo was known were the 9R87201 9 the HyType I 1973 11 and the HyType II Some of the printwheels were plastic others were metalized 12 Also included were the Diablo 630 and 635 13 References edit Alexander R Hammer March 14 1972 Xerox to Acquire Disk Drive Maker For 28 Million The New York Times Xerox Factbook 2003 2004 Archived 2006 11 16 at the Wayback Machine p 43 CI News Play it again George Computerworld Computerworld Inc XI 47 64 November 21 1977 Retrieved June 13 2017 Schultz Brad October 2 1978 Business Mini Weighs 65 Pound What is Durango Computerworld Vol XII no 40 CW Communications Inc pp 1 4 Retrieved June 13 2017 Thom Hogan March 1984 Creating a letterhead with your daisywheel printer Atari Magazine Creative Computing Vol 10 no 3 p 202 Ken amp Den picture Nokia Bell Labs RK11 C manual1971 pdf Bitsavers org PDF BitSavers April 3 2010 Early PDP 11 Peripherals a b Diablo 9R87201 genuine Xerox Printwheel Daisy Wheel CPU a 10 MB hard disk and a floppy drive Xerox Diablo 3100 Diablo HyType I 1973 PDF Xerox Diablo Metalized Print Wheel For Printers Amazon OSE Xerox Corporation Diablo 635 PDF Further reading editComstock George E August 13 2003 Oral History of George Comstock PDF Interviewed by Hendrie Gardner Mountain View California USA Computer History Museum CHM X2727 2004 Archived PDF from the original on March 23 2017 Retrieved March 23 2017 nbsp This technology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Diablo Data Systems amp oldid 1177465547 Diablo Systems, wikipedia, wiki, book, books, library,
