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Groups > comp.os.linux.misc > #95342
| From | Robert Riches <spamtrap42@jacob21819.net> |
|---|---|
| Newsgroups | comp.os.linux.misc |
| Subject | Re: My Computer History (Re: Is This An Old Folks Home?) |
| Date | 2026-11-08 04:23 +0000 |
| Organization | none-at-all |
| Message-ID | <slrn11evu95.82s.spamtrap42@one.localnet> (permalink) |
| References | (4 earlier) <k9AGS.307464$xwD5.240961@fx47.iad> <11cm2tq$33858$1@dont-email.me> <wEudnY94QsYfIXP3nZ2dnZfqnPGdnZ2d@giganews.com> <11cnc4c$3g7sr$1@dont-email.me> <WoRHS.510$v13.412@fx38.iad> |
On 2026-11-08, Charlie Gibbs <cgibbs@kltpzyxm.invalid> wrote: > On 2026-11-07, Lars Poulsen <lars@beagle-ears.com> wrote: > >> The RC2000 paper tape reader actually could read up to 2000 characters >> per second. It contained a 512 byte buffer memory. The more open space >> in the buffer, the faster the paper tape would advance. It was very >> impressive to see it running at full speed! > > My first job was programming a Univac 9300 which had an RC2000 > interfaced to it. Most of our jobs didn't need data fast enough > to make it really wind up, so I added a summary option to one > program to make it show its stuff. > > Later we came up with an application that needed to read lots of > tape at full speed. A big roll of tape shooting through the machine > at 200 inches per second built enough of a static charge to create > a fat spark - which crashed the machine. I rigged up a chain of > paper clips (grounded, of course) that hung where the tape would > hit it on its way out of the reader. Even then, we have to get > a kettle boiling in the machine room to get the humidity up enough > to help the charge bleed off. A piece of (grounded) anti-ESD foam from an integrated circuit order might have drained off the charge with perhaps less risk of even small sparks. One of the advantages of the carbon-based black back-coating Ampex put on their higher-end audio recording tapes back in the day was prevention of static build-up. Within a few years either side of 1980, a professor in an EE class told a story from early in his career. He was hired by GE to work on _BIG_ (as in 8 feet to 16 feet diameter) motors and generators. He said GE would hire EEs and teach them mechanical stuff, because that worked better than hiring MEs and teaching them electrical stuff. He was tasked with solving a problem with premature bearing failure. When a failed machine was torn down, basically all the failed bearings were found to be coated with varnish. It turns out the moving parts within the bearing assembly were building up a static electric charge, which would eventually arc through the oil, creating a small spot of varnish. Eventually, the varnish would build up, and the bearing would fail. The solution was to add something to the oil to make it slightly conductive to electricity. Management told him he had just earned his salary for his entire career--and to go do it again. The professor's last name was Clegg. He taught at Brigham Young University. -- Robert Riches spamtrap42@jacob21819.net (Yes, that is one of my email addresses.)
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Is This An Old Folks Home? Farley Flud <ff@gnulinux.rocks> - 2026-11-02 23:08 +0000
Re: Is This An Old Folks Home? "Carlos E. R." <robin_listas@es.invalid> - 2026-11-03 02:51 +0100
On the on-topicness of tape drives (was: Re: Is This An Old Folks Home?) Nuno Silva <nunojsilva@invalid.invalid> - 2026-11-04 23:47 +0000
Re: On the on-topicness of tape drives Rich <rich@example.invalid> - 2026-11-05 04:14 +0000
Re: On the on-topicness of tape drives c186282 <c186282@nnada.net> - 2026-11-05 17:29 -0500
Re: On the on-topicness of tape drives Rich <rich@example.invalid> - 2026-11-05 22:52 +0000
Re: On the on-topicness of tape drives c186282 <c186282@nnada.net> - 2026-11-05 19:11 -0500
Re: On the on-topicness of tape drives Rich <rich@example.invalid> - 2026-11-06 02:41 +0000
Re: On the on-topicness of tape drives c186282 <c186282@nnada.net> - 2026-11-05 22:31 -0500
Re: On the on-topicness of tape drives Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-06 20:51 +0000
Re: On the on-topicness of tape drives rbowman <bowman@montana.com> - 2026-11-07 02:41 +0000
Re: On the on-topicness of tape drives Lars Poulsen <lars@beagle-ears.com> - 2026-11-07 06:39 -0800
Re: On the on-topicness of tape drives rbowman <bowman@montana.com> - 2026-11-07 18:30 +0000
Re: On the on-topicness of tape drives Lars Poulsen <lars@beagle-ears.com> - 2026-11-07 15:26 -0800
Re: On the on-topicness of tape drives rbowman <bowman@montana.com> - 2026-11-08 01:15 +0000
Re: On the on-topicness of tape drives The Natural Philosopher <tnp@invalid.invalid> - 2026-11-08 11:28 +0000
Re: On the on-topicness of tape drives rbowman <bowman@montana.com> - 2026-11-08 18:14 +0000
Re: On the on-topicness of tape drives Beej Jorgensen <beej@beej.us> - 2026-11-06 05:59 +0000
Re: Tape Drives Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-11-06 06:18 +0000
Re: Tape Drives Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-11-07 18:40 +0800
Re: Tape Drives Peter Flass <Peter@Iron-Spring.com> - 2026-11-07 07:33 -0700
Re: Tape Drives c186282 <c186282@nnada.net> - 2026-11-07 13:12 -0500
Re: Tape Drives "Kerr-Mudd, John" <admin@127.0.0.1> - 2026-11-08 14:32 +0000
Re: Tape Drives c186282 <c186282@nnada.net> - 2026-11-08 21:31 -0500
Re: Is This An Old Folks Home? c186282 <c186282@nnada.net> - 2026-11-02 21:08 -0500
Re: Is This An Old Folks Home? rbowman <bowman@montana.com> - 2026-11-03 02:26 +0000
Re: Is This An Old Folks Home? Woozy Song <suzyw0ng@outlook.com> - 2026-11-04 09:55 +0800
Re: Is This An Old Folks Home? c186282 <c186282@nnada.net> - 2026-11-03 22:14 -0500
Re: Is This An Old Folks Home? Rich <rich@example.invalid> - 2026-11-04 03:54 +0000
Re: Is This An Old Folks Home? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-04 06:21 +0000
Re: Is This An Old Folks Home? TJ <TJ@noneofyour.business> - 2026-11-05 20:40 -0500
Re: Is This An Old Folks Home? c186282 <c186282@nnada.net> - 2026-11-05 21:52 -0500
Re: Is This An Old Folks Home? "Carlos E. R." <robin_listas@es.invalid> - 2026-11-06 14:28 +0100
My Computer History (Re: Is This An Old Folks Home?) Lars Poulsen <lars@beagle-ears.com> - 2026-11-06 18:37 -0800
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-07 00:51 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Lars Poulsen <lars@beagle-ears.com> - 2026-11-07 06:20 -0800
Re: My Computer History (Re: Is This An Old Folks Home?) Peter Flass <Peter@Iron-Spring.com> - 2026-11-07 07:38 -0700
Re: My Computer History (Re: Is This An Old Folks Home?) Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-08 02:47 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) Robert Riches <spamtrap42@jacob21819.net> - 2026-11-08 04:23 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-08 05:00 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-08 20:50 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-09 03:53 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) "Carlos E.R." <robin_listas@es.invalid> - 2026-11-10 15:06 +0100
Re: My Computer History (Re: Is This An Old Folks Home?) "Carlos E.R." <robin_listas@es.invalid> - 2026-11-10 15:01 +0100
Re: My Computer History (Re: Is This An Old Folks Home?) Peter Flass <Peter@Iron-Spring.com> - 2026-11-07 07:31 -0700
Re: My Computer History (Re: Is This An Old Folks Home?) Lars Poulsen <lars@beagle-ears.com> - 2026-11-07 06:52 -0800
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-07 20:09 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Thomas Koenig <tkoenig@netcologne.de> - 2026-11-08 08:08 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-08 21:24 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Lars Poulsen <lars@beagle-ears.com> - 2026-11-08 18:34 -0800
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-08 22:54 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-09 04:39 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-09 21:08 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-11-10 02:25 +0000
Re: My Computer History Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-11-10 02:32 +0000
Re: My Computer History c186282 <c186282@nnada.net> - 2026-11-09 23:07 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-09 22:49 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Lars Poulsen <lars@beagle-ears.com> - 2026-11-10 06:03 -0800
Re: My Computer History (Re: Is This An Old Folks Home?) scott@slp53.sl.home (Scott Lurndal) - 2026-11-10 15:08 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) Peter Flass <Peter@Iron-Spring.com> - 2026-11-09 07:29 -0700
Re: My Computer History (Re: Is This An Old Folks Home?) The Natural Philosopher <tnp@invalid.invalid> - 2026-11-09 16:11 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-09 21:19 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Bob Eager <throwaway0008@eager.cx> - 2026-11-10 14:31 +0000
Re: My Computer History (Re: Is This An Old Folks Home?) Lynn Wheeler <lynn@garlic.com> - 2026-11-09 07:48 -1000
Re: My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-09 21:55 -0500
Re: My Computer History (Re: Is This An Old Folks Home?) Peter Flass <Peter@Iron-Spring.com> - 2026-11-09 21:35 -0700
Re: spooling, My Computer History (Re: Is This An Old Folks Home?) John Levine <johnl@taugh.com> - 2026-11-09 16:56 +0000
Re: spooling, My Computer History (Re: Is This An Old Folks Home?) c186282 <c186282@nnada.net> - 2026-11-09 21:46 -0500
Re: spooling, My Computer History (Re: Is This An Old Folks Home?) Robert Riches <spamtrap42@jacob21819.net> - 2026-11-10 18:06 +0000
Re: Is This An Old Folks Home? Beej Jorgensen <beej@beej.us> - 2026-11-04 19:15 +0000
Re: Is This An Old Folks Home? Farley Flud <ff@gnulinux.rocks> - 2026-11-04 20:38 +0000
Re: Is This An Old Folks Home? Nuno Silva <nunojsilva@invalid.invalid> - 2026-11-04 23:51 +0000
Re: Is This An Old Folks Home? "s|b" <me@privacy.invalid> - 2026-11-05 17:48 +0100
Re: Is This An Old Folks Home? Robert Riches <spamtrap42@jacob21819.net> - 2026-11-05 16:56 +0000
Re: Is This An Old Folks Home? The Natural Philosopher <tnp@invalid.invalid> - 2026-11-05 20:55 +0000
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-06 12:23 -0500
Re: Is This An Old Folks Home? Farley Flud <ff@gnulinux.rocks> - 2026-11-06 19:25 +0000
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-06 15:59 -0500
Re: Is This An Old Folks Home? rbowman <bowman@montana.com> - 2026-11-07 02:50 +0000
Re: Is This An Old Folks Home? Nuno Silva <nunojsilva@invalid.invalid> - 2026-11-07 09:03 +0000
Re: Is This An Old Folks Home? rbowman <bowman@montana.com> - 2026-11-07 18:01 +0000
Re: Is This An Old Folks Home? The Natural Philosopher <tnp@invalid.invalid> - 2026-11-07 21:55 +0000
Re: Is This An Old Folks Home? rbowman <bowman@montana.com> - 2026-11-08 01:01 +0000
Re: Is This An Old Folks Home? L Thorpe <lt666@sixsixsix.net> - 2026-11-07 18:31 +0000
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-07 13:39 -0500
Re: Is This An Old Folks Home? L Thorpe <lt666@sixsixsix.net> - 2026-11-07 19:07 +0000
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-07 14:30 -0500
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-07 13:01 -0500
Re: Is This An Old Folks Home? c186282 <c186282@nnada.net> - 2026-11-07 15:54 -0500
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-08 00:33 -0500
Re: Is This An Old Folks Home? c186282 <c186282@nnada.net> - 2026-11-08 21:05 -0500
Re: Is This An Old Folks Home? "Joel W. Crump" <joelcrump@gmail.com> - 2026-11-10 05:30 -0500
Re: Is This An Old Folks Home? c186282 <c186282@nnada.net> - 2026-11-06 23:00 -0500
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