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Article #210965Re: IBM 9020 FAA/ATC Systems from 1960's
From: CBFalconer
Date: Mon, 06 Aug 2001 02:52
Date: Mon, 06 Aug 2001 02:52
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Julian Thomas wrote: > > In > <vd2NzVOTNb7v-p...@dialup-64.157.62.31.Dial1.Washington1.Level3.net>, > on 08/02/01 > at 12:17 AM, jav...@earthlink.net (John Varela) said: > > >You are correct that the first purchases were As, but as the software > >grew some As were changed to Ds before delivery, under the original > >contract provisions. > > Also, the mod 50 version (A) was the first to be developed and tested. > > My favorite 9020 story was about the day of the great blackout (was this > 1965?) when earlier that day they had hooked up the UPS feature (it had a > different name then), tested it, and then disconnected it again - before > the blackout hit Poughkeepsie. On that date I had a breadboard of a desktop computer running (remember DTL from components), and no handy Variac. I had designed for operation down to 90 V., and the initial five or ten minutes of the blackout had all sorts of low voltages. I hung a Simpson on the A.C. and ran around frantically trying things. They were all still working at 75 V. but the fluoroscents were behaving badly. -- Chuck F (cbfal...@yahoo.com) (cbfal...@XXXXworldnet.att.net) (Remove "XXXX" from reply address. yahoo works unmodified) mailto:u...@ftc.gov (for spambots to harvest)
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Path: mbox-mo1.pugleaf.net!archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!wn1feed!worldnet.att.net!135.173.83.71!wnfilter1!worldnet-localpost!bgtnsc06-news.ops.worldnet.att.net.POSTED!not-for-mail Message-ID: <3B6E02F5.FBFF567D@yahoo.com> From: CBFalconer <cbfal...@yahoo.com> Reply-To: cbfal...@worldnet.att.net Organization: Ched Research X-Mailer: Mozilla 4.75 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: alt.folklore.computers Subject: Re: IBM 9020 FAA/ATC Systems from 1960's References: <7HU77.9333$TM5.980906@typhoon.southeast.rr.com> <3b68284f$3$wg$mr2ice@news.fltg.net> <vd2NzVOTNb7v-pn2-UJUbwmmDdg0p@dialup-64.157.62.31.Dial1.Washington1.Level3.net> <3b6db2d4$8$wg$mr2ice@news.fltg.net> Lines: 32 Date: Mon, 06 Aug 2001 02:52:33 GMT NNTP-Posting-Host: 12.90.173.248 X-Complaints-To: ab...@worldnet.att.net X-Trace: bgtnsc06-news.ops.worldnet.att.net 997066353 12.90.173.248 (Mon, 06 Aug 2001 02:52:33 GMT) NNTP-Posting-Date: Mon, 06 Aug 2001 02:52:33 GMT Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit