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Data Disc

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</style><table class="infobox ib-company vcard"><caption class="infobox-title fn org" style="font-size: 125%;">Ancomp, Inc.</caption><tbody><tr><td colspan="2" class="infobox-image ib-company-logo logo"></td></tr><tr><th scope="row" class="infobox-label">Formerly</th><td class="infobox-data nickname">Data Disc, Incorporated (1962–1976)</td></tr><tr><th scope="row" class="infobox-label">Company type</th><td class="infobox-data category">Public</td></tr><tr><th scope="row" class="infobox-label">Industry</th><td class="infobox-data category">Computer</td></tr><tr><th scope="row" class="infobox-label">Founded</th><td class="infobox-data">February 1962 (1962-02) in <a href="Palo_Alto%2C_California" title="Palo Alto, California">Palo Alto, California</a>, United States</td></tr><tr><th scope="row" class="infobox-label">Founders</th><td class="infobox-data agent"><style data-mw-deduplicate="TemplateStyles:r1126788409">

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</style><div class="plainlist"><ul><li>Armin Miller</li><li>Daniel Teichroew</li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Defunct</th><td class="infobox-data">March 1977 (1977-03)</td></tr><tr><th scope="row" class="infobox-label">Fate</th><td class="infobox-data">Acquired by <a href="Datapoint" title="Datapoint">Datapoint</a></td></tr></tbody></table>

Data Disc, Incorporated, was a public American computer hardware company active from 1962 to 1977 and based in <a href="Silicon_Valley" title="Silicon Valley">Silicon Valley</a>. The company primarily manufactured hard disk drive units for <a href="Mainframe_computer" title="Mainframe computer">mainframes</a> and <a href="Minicomputer" title="Minicomputer">minicomputers</a>. The company also manufactured specialized analog hard disk drives that stored video information for scientific organizations such as <a href="NASA" title="NASA">NASA</a> as well as the television industry. Data Disc also produced <a href="Graphical_terminal" class="mw-redirect" title="Graphical terminal">graphical terminals</a> and data tape drives, the latter under their subsidiary Bright Industries, Inc.. In 1976, the company changed their name to Amcomp, Inc., and in 1977, they were acquired by <a href="Datapoint" title="Datapoint">Datapoint</a>.

<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>

Data Disc was founded in February 1962 in <a href="Palo_Alto%2C_California" title="Palo Alto, California">Palo Alto, California</a> by Armin Miller and Daniel Teichroew.<a href="#cite_note-newpresident-1">[1]</a><a href="#cite_note-datamation-2">[2]</a> Miller had previously worked for the <a href="Ampex" title="Ampex">Ampex Corporation</a>, where he developed the basis for <a href="Modified_frequency_modulation" title="Modified frequency modulation">modified frequency modulation</a> (MFM), a <a href="Line_code" title="Line code">line code</a> for magnetic data recording that doubled the <a href="Density_(computer_storage)" title="Density (computer storage)">density</a> and transfer rate of data of the earlier <a href="Frequency_modulation_encoding" title="Frequency modulation encoding">FM encoding scheme</a>. For MFM (also known as Miller modulation code), he was awarded a patent in 1963.<a href="#cite_note-essentialguide-3">[3]</a><a href="#cite_note-first100-4">[4]</a> In 1965, by which the company employed 26 people, Data Disc moved their headquarters to the <a href="Stanford_Research_Park" title="Stanford Research Park">Stanford Industrial Park</a>, occupying half of a 36,000-square-foot building formerly occupied by <a href="Lockheed_Corporation" title="Lockheed Corporation">Lockheed</a>.<a href="#cite_note-quarters-5">[5]</a> The company gradually expanded their presence to occupy the entire footprint of that building by the late 1960s.<a href="#cite_note-consolidate-6">[6]</a>

At Data Disc, Miller developed the first low-mass, three-point-suspension <a href="Disk_read-and-write_head" title="Disk read-and-write head">read–write head</a> that was later licensed to <a href="IBM" title="IBM">IBM</a> and used in their influential <a href="Winchester_drive" class="mw-redirect" title="Winchester drive">Winchester drives</a>.<a href="#cite_note-first100-4">[4]</a><a href="#cite_note-7">[7]</a> This allowed for the head to come into closer contact with the spinning disk, allowing for much higher linear densities than that of Data Disc's competition (3200 <abbr title="bits per inch">bpi</abbr> versus 300 <abbr title="bits per inch">bpi</abbr> of their 1960s competitors).<a href="#cite_note-datamation-2">[2]</a> With the thin-film, <a href="Electroless_nickel-phosphorus_plating" title="Electroless nickel-phosphorus plating">nickel-cobalt-plated</a> platters that Data Disc was using at the time for their drive units, the drives could even be stopped and started arbitrarily, with the heads midway through the platter, without causing a <a href="Head_crash" title="Head crash">head crash</a>.<a href="#cite_note-quarters-5">[5]</a><a href="#cite_note-datamation-2">[2]</a><a href="#cite_note-first100-4">[4]</a> Data Disc sold their read–write heads to other companies on an <a href="Original_equipment_manufacturer" title="Original equipment manufacturer">OEM</a> basis; companies whose drives used particulate magnetic media instead of thin-film magnetic media often had to lubricate their drives with <a href="Silicone_oil" title="Silicone oil">silicone oil</a> to prevent the heads from sticking to the drives.<a href="#cite_note-first100-4">[4]</a>

Two former Ampex engineers, Fred Pfost and Kurt Machein, joined Data Disc in the mid-1960s; outside of work, they developed the VDR-210CF, a device that could record analog video signals onto a hard disk. This allowed broadcasters to perform <a href="Instant_replay" title="Instant replay">instant replays</a> of sports events on the fly, with the ability to jog between frames, replay in slow motion, and pause on a still frame cleanly (the <a href="Helical_scan" title="Helical scan">helical scanning</a> heads of videotape decks usually could not perform such trick plays cleanly, and pausing could wear out the signal on the tape due to friction concentrated on one spot on the tape). This device was sold by Machein's company Machtronics and licensed to Data Disc for resale to broadcast entities.<a href="#cite_note-8">[8]</a><a href="#cite_note-9">[9]</a> Data Disc developed a specialized version of their videodisc recorders for <a href="NASA" title="NASA">NASA</a>, which were able to store <a href="RGB_analog_component_video" class="mw-redirect" title="RGB analog component video">RGB component video signals</a> sequentially and convert them to <a href="Composite_video" title="Composite video">composite video signals</a> usable by broadcasters.<a href="#cite_note-10">[10]</a> Data Disc's system was used by NASA in 1969 during the <a href="Apollo_11" title="Apollo 11">Apollo 11</a> moon landings and the <a href="Mariner_6_and_7" title="Mariner 6 and 7">Mariner 6 and 7</a> missions to Mars.<a href="#cite_note-11">[11]</a><a href="#cite_note-12">[12]</a> Another application-specific version of their videodisc recorders allowed physicians to make rapid <a href="X-ray" title="X-ray">X-rays</a> without film development wait times.<a href="#cite_note-13">[13]</a> Data Disc formalized their video systems unit as a subsidiary in July 1969.<a href="#cite_note-14">[14]</a>

Following a corporate reorganization caused by a sudden doubling of production volume, Miller resigned as president of Data Disc in April 1969, while remaining on the board of directors. He was succeeded as president by William W. Stevens.<a href="#cite_note-15">[15]</a> Miller later went on to found <a href="Datacopy" title="Datacopy">Datacopy</a>, a pioneering manufacturer of <a href="Image_scanner" title="Image scanner">image scanners</a>, in 1973.<a href="#cite_note-yasaki-16">[16]</a>: 103 Data Disc expanded with regional sales offices across the United States in November 1969,<a href="#cite_note-17">[17]</a> and the company left Palo Alto for larger headquarters in <a href="Sunnyvale%2C_California" title="Sunnyvale, California">Sunnyvale, California</a>, in March 1971.<a href="#cite_note-consolidate-6">[6]</a> Andrew W. O'Sullivan replaced Stevens as president the following July.<a href="#cite_note-18">[18]</a>

Data Disc filed its <a href="Initial_public_offering" title="Initial public offering">initial public offering</a> in mid-1972. In June 1972, Data Disc acquired Bright Industries from <a href="Tracor" title="Tracor">Tracor</a> of <a href="Austin%2C_Texas" title="Austin, Texas">Austin, Texas</a>, for 5,000 shares of Data Disc's stock, as well as $100,000 in cash. Bright, a maker of traditional data tape drives, was acquired to round out the company's roster of products and make them more enticing to Data Disc's hard drive customers, who often bought tape drives from competitors.<a href="#cite_note-19">[19]</a> Likewise, Data Disc expanded to the field of computer graphics with the release of the Anagraph <a href="Graphical_terminal" class="mw-redirect" title="Graphical terminal">graphical terminal</a> in November 1972 and the 6600 system in December 1973.<a href="#cite_note-20">[20]</a><a href="#cite_note-21">[21]</a> In June 1974, by which point the company employed 269 in total,<a href="#cite_note-22">[22]</a> Data Disc raised a 52,000-square-foot building across the street for Bright to occupy.<a href="#cite_note-23">[23]</a> By mid-1975, Data Disc's hard drive sales accounted for 55 percent of their revenues; meanwhile, sales of graphics terminal sales accounted for 15 percent; sales of Bright tape drives for 20 percent; and sales of videodiscs for 10 percent.<a href="#cite_note-hybrid-24">[24]</a>

In September 1975, Sullivan was succeeded as president by James J. Woo, an 11-year veteran of <a href="IBM" title="IBM">IBM</a>.<a href="#cite_note-25">[25]</a> One of his first acts as president was renaming Data Disc to Amcomp, Inc.,<a href="#cite_note-26">[26]</a> in reflecting its focus away from disk drive units and toward other peripherals and complete computer systems.<a href="#cite_note-27">[27]</a> The name change was finalized in June 1976.<a href="#cite_note-28">[28]</a> In March 1977, <a href="Datapoint" title="Datapoint">Datapoint Corporation</a> of <a href="San_Antonio" title="San Antonio">San Antonio, Texas</a>, acquired Amcomp for $2 million in a stock swap.<a href="#cite_note-29">[29]</a>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-in/138138366/">"Data Disc Inc. names Stevens new president"</a>. The Peninsula Times Tribune: 11. April 21, 1969 – via Newspapers.com.</cite>

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<li id="cite_note-datamation-2">^ <a href="#cite_ref-datamation_2-0">a</a> <a href="#cite_ref-datamation_2-1">b</a> <a href="#cite_ref-datamation_2-2">c</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://archive.org/details/bitsavers_datamation_40970523/page/n165/">"In the Picture"</a>. Datamation. 26 (2). Technical Publishing: 164. February 1980 – via the Internet Archive.</cite>

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<li id="cite_note-first100-4">^ <a href="#cite_ref-first100_4-0">a</a> <a href="#cite_ref-first100_4-1">b</a> <a href="#cite_ref-first100_4-2">c</a> <a href="#cite_ref-first100_4-3">d</a> <cite id="CITEREFDanielC._Denis_MeeMark_H._Clark1999" class="citation book cs1">Daniel, Eric D.; C. Denis Mee; Mark H. Clark (1999). <a rel="nofollow" class="external text" href="https://archive.org/details/magneticrecordin00eric/page/289/">Magnetic Recording: The First 100 Years</a>. IEEE Press. p. 289. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0780347099</bdi> – via the Internet Archive.</cite>

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<li id="cite_note-quarters-5">^ <a href="#cite_ref-quarters_5-0">a</a> <a href="#cite_ref-quarters_5-1">b</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-storage/138137537/">"Data storage company moves to new quarters"</a>. The Peninsula Times Tribune: 6. March 4, 1965 – via Newspapers.com.</cite>

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<li id="cite_note-consolidate-6">^ <a href="#cite_ref-consolidate_6-0">a</a> <a href="#cite_ref-consolidate_6-1">b</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-in/138139192/">"Data Disc Inc. to consolidate"</a>. The Peninsula Times Tribune: 6. March 29, 1971 – via Newspapers.com.</cite>

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<li id="cite_note-7"><a href="#cite_ref-7">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-modesto-bee-death-of-armin-miller-of/65552175/">"Armin Miller"</a>. The Modesto Bee: F-8. April 11, 1997 – via Newspapers.com.</cite>

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<li id="cite_note-8"><a href="#cite_ref-8">^</a> <cite id="CITEREFHammarBob_Wilson2023" class="citation web cs1">Hammar, Peter; Bob Wilson (September 12, 2023). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230928202912/https://www.storagenewsletter.com/2023/09/12/culture-of-innovation-and-technical-achievement-at-ampex/">"Culture of Innovation and Technical Achievement at Ampex"</a>. StorageNewsletter. Archived from <a rel="nofollow" class="external text" href="https://www.storagenewsletter.com/2023/09/12/culture-of-innovation-and-technical-achievement-at-ampex/">the original</a> on September 28, 2023.</cite>

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<li id="cite_note-9"><a href="#cite_ref-9">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/redwood-city-tribune-disc-stores-tv-pict/138138197/">"Disc Stores TV Pictures"</a>. Redwood City Tribune: 21. September 21, 1966 – via Google Books.</cite>

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<li id="cite_note-10"><a href="#cite_ref-10">^</a> <cite id="CITEREFScandling1969" class="citation journal cs1">Scandling, Marge (July 15, 1969). <a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-technology-b/138138429/">"Technology behind the moonshot"</a>. The Peninsula Times Tribune: 15 – via Newspapers.com.</cite>

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<li id="cite_note-11"><a href="#cite_ref-11">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-peninsula-fi/138138533/">"Peninsula firms supply Mars vehicle equipment"</a>. The Peninsula Times Tribune: 3. July 31, 1969 – via Newspapers.com.</cite>

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<li id="cite_note-12"><a href="#cite_ref-12">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-ge/138139130/">"Data Disc gets large display system contract"</a>. The Peninsula Times Tribune: 7. June 11, 1970 – via Newspapers.com.</cite>

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<li id="cite_note-13"><a href="#cite_ref-13">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-medican-x-ra/138138564/">"Medican X ray 'instant replay' device developed"</a>. The Peninsula Times Tribune: 7. September 18, 1969 – via Newspapers.com.</cite>

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<li id="cite_note-14"><a href="#cite_ref-14">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-in/138138463/">"Data Disc Inc. forms video systems unit"</a>. The Peninsula Times Tribune: 7. July 17, 1969 – via Newspapers.com.</cite>

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<li id="cite_note-15"><a href="#cite_ref-15">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-re/138138352/">"Data Disc reorganizes division"</a>. The Peninsula Times Tribune: 7. March 7, 1969 – via Newspapers.com.</cite>

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<li id="cite_note-yasaki-16"><a href="#cite_ref-yasaki_16-0">^</a> <cite id="CITEREFYasaki1983" class="citation journal cs1">Yasaki, Edward K. (November 1983). <a rel="nofollow" class="external text" href="http://www.bitsavers.org/magazines/Datamation/198311.pdf">"Camera for a CPU"</a> (PDF). Datamation. 29 (11). Technical Publishing Company: 103–105 – via Bitsavers.org.</cite>

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<li id="cite_note-18"><a href="#cite_ref-18">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-na/138147577/">"Data Disc names acting president"</a>. The Peninsula Times Tribune: 12. June 30, 1971 – via Newspapers.com.</cite>

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<li id="cite_note-19"><a href="#cite_ref-19">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-bu/138139249/">"Data Disc buys Texas maker of computer products"</a>. The Peninsula Times Tribune: 7. June 6, 1972 – via Newspapers.com.</cite>

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<li id="cite_note-20"><a href="#cite_ref-20">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=XFwBCNwWK8MC&pg=PA33">"Data Disc Adds Color to Display"</a>. Computerworld. VI (48). CW Communications: 33. November 29, 1972 – via Google Books.</cite>

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<li id="cite_note-21"><a href="#cite_ref-21">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=2k65Y9M-mJsC&pg=PA15">"Data Disc Graphic Display System Interfaces with CDC 1700 Computers"</a>. Computerworld. VII (50). IDG Publications: 15. December 12, 1973 – via Newspapers.com.</cite>

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<li id="cite_note-22"><a href="#cite_ref-22">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-la/138140639/">"Data Disc lays off 47 employees"</a>. The Peninsula Times Tribune: 8. September 5, 1974 – via Newspapers.com.</cite>

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<li id="cite_note-23"><a href="#cite_ref-23">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-san-francisco-examiner-data-disc-bui/138140488/">"Data Disc building"</a>. The San Francisco Examiner: 59. June 19, 1974 – via Newspapers.com.</cite>

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<li id="cite_note-hybrid-24"><a href="#cite_ref-hybrid_24-0">^</a> <cite id="CITEREFUpton1975" class="citation journal cs1">Upton, Molly (November 19, 1975). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=khwnFtEzTccC&pg=PA50">"At Data Disc, Trend to Hybrid Disks Seen Developing"</a>. Computerworld. IX (47). CW Communications: 50 – via Google Books.</cite>

</li>

<li id="cite_note-25"><a href="#cite_ref-25">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-i/138141182/">"Data Disc, Inc. names executive"</a>. The Peninsula Times Tribune: 9. September 23, 1975 – via Newspapers.com.</cite>

</li>

<li id="cite_note-26"><a href="#cite_ref-26">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-argus-name-change/138141214/">"Name change"</a>. The Argus: 11. June 17, 1976 – via Newspapers.com.</cite>

</li>

<li id="cite_note-27"><a href="#cite_ref-27">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-peninsula-times-tribune-data-disc-ch/138141225/">"Data Disc changes name to Amcomp Inc"</a>. The Peninsula Times Tribune: 8. June 17, 1976 – via Newspapers.com.</cite>

</li>

<li id="cite_note-28"><a href="#cite_ref-28">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://www.newspapers.com/article/the-san-francisco-examiner-now-its-amco/138141238/">"Now it's Amcomp"</a>. The San Francisco Examiner: 61. June 17, 1976 – via Newspapers.com.</cite>

</li>

<li id="cite_note-29"><a href="#cite_ref-29">^</a> <cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=ySBFs12hzSkC&pg=PA48">"Acquisitions"</a>. Computerworld. XI (10). CW Communications: 48. March 7, 1977 – via Google Books.</cite>

</li>

</ol></div>

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</style><div id="Hard_disk_drive_manufacturers194" style="font-size:114%;margin:0 4em"><a href="Hard_disk_drive" title="Hard disk drive">Hard disk drive</a> manufacturers</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><a href="History_of_hard_disk_drives" title="History of hard disk drives">History of hard disk drives</a>

<ul><li><a href="History_of_IBM_magnetic_disk_drives" title="History of IBM magnetic disk drives">IBM magnetic disk drives</a></li></ul></li>

<li><a href="List_of_defunct_hard_disk_manufacturers" title="List of defunct hard disk manufacturers">List of defunct hard disk manufacturers</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:left">Current</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0;text-align:left"><div style="padding:0 0.25em">

<ul><li><a href="Seagate_Technology" title="Seagate Technology">Seagate Technology</a></li>

<li><a href="Toshiba" title="Toshiba">Toshiba</a></li>

<li><a href="Western_Digital" title="Western Digital">Western Digital</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:left">Defunct</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0;text-align:left"><div style="padding:0 0.25em">

<li><a href="Alps_Electric" class="mw-redirect" title="Alps Electric">Alps Electric</a></li>

<li><a href="Ampex" title="Ampex">Ampex</a></li>

<li><a href="Anelex" title="Anelex">Anelex</a></li>

<li><a href="Areal_Technology" title="Areal Technology">Areal Technology</a></li>

<li><a href="Atasi_Corporation" title="Atasi Corporation">Atasi</a></li>

<li><a href="Avatar_Systems" title="Avatar Systems">Avatar Systems</a></li>

<li><a href="Bryant_Grinder" title="Bryant Grinder">Bryant Computer Products</a></li>

<li><a href="Burroughs_Corporation" title="Burroughs Corporation">Burroughs</a></li>

<li><a href="Castlewood_Orb_Drive" class="mw-redirect" title="Castlewood Orb Drive">Castlewood Systems</a></li>

<li><a href="Calcomp" title="Calcomp">Calcomp</a></li>

<li><a href="Caelus_Memories" title="Caelus Memories">Caelus Memories</a></li>

<li><a href="Groupe_Bull" title="Groupe Bull">CII-Honeywell-Bull</a></li>

<li><a href="Computer_Memories%2C_Inc." title="Computer Memories, Inc.">Computer Memories, Inc.</a></li>

<li><a href="Conner_Peripherals" title="Conner Peripherals">Conner Peripherals</a></li>

<li><a href="Cornice_Inc." class="mw-redirect" title="Cornice Inc.">Cornice</a></li>

<li><a href="Data_General" title="Data General">Data General</a></li>

<li><a href="Datapoint" title="Datapoint">Datapoint</a></li>

<li><a href="Dataproducts" title="Dataproducts">Dataproducts</a></li>

<li><a href="Diablo_Data_Systems" title="Diablo Data Systems">Diablo Systems</a></li>

<li><a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a></li>

<li><a href="Emulex" title="Emulex">Emulex</a></li>

<li><a href="Epson" title="Epson">Epson</a></li>

<li><a href="ExcelStor_Technology" title="ExcelStor Technology">ExcelStor Technology</a></li>

<li><a href="Fuji_Electric" title="Fuji Electric">Fuji Electric</a></li>

<li><a href="Fujitsu" title="Fujitsu">Fujitsu</a></li>

<li><a href="General_Electric" title="General Electric">General Electric</a></li>

<li><a href="GS_Magicstor" class="mw-redirect" title="GS Magicstor">GS Magicstor</a></li>

<li><a href="Hewlett-Packard" title="Hewlett-Packard">Hewlett-Packard</a></li>

<li><a href="Hitachi" title="Hitachi">Hitachi</a></li>

<li><a href="Hokushin_Electric_Works" class="mw-redirect" title="Hokushin Electric Works">Hokushin Electric Works</a></li>

<li><a href="Hyosung" title="Hyosung">Hyosung</a></li>

<ul><li><a href="AdStar" title="AdStar">AdStar</a></li></ul></li>

<li><a href="Magnetic_Peripherals" class="mw-redirect" title="Magnetic Peripherals">Imprimis (CDC)</a></li>

<li><a href="Int%C3%A9gral_Peripherals" title="Intégral Peripherals">Intégral Peripherals</a></li>

<li><a href="Iomega" title="Iomega">Iomega</a></li>

<li><a href="JT_Storage" title="JT Storage">JT Storage</a></li>

<li><a href="Kalok" title="Kalok">Kalok</a></li>

<li><a href="Kennedy_Company" title="Kennedy Company">Kennedy</a></li>

<li><a href="Kyocera" title="Kyocera">Kyocera</a></li>

<li><a href="Librascope" title="Librascope">Librascope</a></li>

<li><a href="Maxtor" title="Maxtor">Maxtor</a></li>

<li><a href="Memorex" title="Memorex">Memorex</a></li>

<li><a href="Micropolis_Corporation" title="Micropolis Corporation">Micropolis</a></li>

<li><a href="MiniScribe" title="MiniScribe">MiniScribe</a></li>

<li><a href="MiniStor" title="MiniStor">MiniStor Peripherals</a></li>

<li><a href="Mitsubishi" title="Mitsubishi">Mitsubishi</a></li>

<li><a href="Mitsumi_Electric" title="Mitsumi Electric">Mitsumi Electric</a></li>

<li><a href="KDK" title="KDK">Nippon Electric Industry</a></li>

<li><a href="Noma%C3%AF" title="Nomaï">Nomaï</a></li>

<li><a href="Ohio_Scientific" title="Ohio Scientific">Ohio Scientific</a></li>

<li><a href="Oki_Electric_Industry" title="Oki Electric Industry">Okidata</a></li>

<li><a href="Olivetti" title="Olivetti">Olivetti OPE</a></li>

<li><a href="Panasonic" title="Panasonic">Panasonic</a></li>

<li><a href="Pertec_Computer" class="mw-redirect" title="Pertec Computer">Pertec Computer</a></li>

<li><a href="Philips" title="Philips">Philips</a></li>

<li><a href="Plus_Development" title="Plus Development">Plus Development</a></li>

<li><a href="Potter_Instrument" title="Potter Instrument">Potter Instrument</a></li>

<li><a href="PrairieTek" title="PrairieTek">PrairieTek</a></li>

<li><a href="Priam_Corporation" title="Priam Corporation">Priam</a></li>

<li><a href="Quantum_Corporation" title="Quantum Corporation">Quantum</a></li>

<li><a href="Ricoh" title="Ricoh">Ricoh</a></li>

<li><a href="Rodime" title="Rodime">Rodime</a></li>

<li><a href="SAGEM" title="SAGEM">SAGEM</a></li>

<li><a href="Samsung_Electronics" title="Samsung Electronics">Samsung Electronics</a></li>

<li><a href="Sequel_Inc." class="mw-redirect" title="Sequel Inc.">Sequel</a></li>

<li><a href="Shugart_Associates" title="Shugart Associates">Shugart Associates</a></li>

<li><a href="Siemens" title="Siemens">Siemens</a></li>

<li><a href="StorageTek" title="StorageTek">StorageTek</a></li>

<li><a href="SyQuest_Technology" title="SyQuest Technology">SyQuest Technology</a></li>

<li><a href="Tandon_Corporation" title="Tandon Corporation">Tandon</a></li>

<li><a href="Texas_Instruments" title="Texas Instruments">Texas Instruments</a></li>

<li><a href="Tokico" title="Tokico">Tokico</a></li>

<li><a href="Xebec_Corporation" title="Xebec Corporation">Xebec</a></li>

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