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Article #210965

Re: IBM 9020 FAA/ATC Systems from 1960's

#210965
From: CBFalconer
Date: Mon, 06 Aug 2001 02:52
30 lines
2428 bytes
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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Subject: Re: IBM 9020 FAA/ATC Systems from 1960's
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