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Groups > alt.folklore.computers > #153738

Re: the FORTH computer language

From David Wade <dave.g4ugm@gmail.com>
Newsgroups alt.folklore.computers
Subject Re: the FORTH computer language
Date 2015-11-01 16:32 +0000
Organization albasani.net
Message-ID <n15eqd$sdu$1@news.albasani.net> (permalink)
References (17 earlier) <d9cjvaFr1sjU1@mid.individual.net> <PM0005233ED1260AF8@aca42db5.ipt.aol.com> <87wpu53fak.fsf@redbull.i-did-not-set--mail-host-address--so-tickle-me> <PM000523526764E1ED@aca424b4.ipt.aol.com> <ca5eecdc-a4e6-4a7f-bbee-0557d3f8fbb9@googlegroups.com>

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On 30/10/2015 19:25, hancock4@bbs.cpcn.com wrote:
> On Friday, October 30, 2015 at 9:54:18 AM UTC-4, jmfbahciv wrote:
>
>> I don't remember when CPU boards started to be replaced rather than fixed
>> on site.  My guess would early 80s but I'm not sure.
>
> IBM developed pluggable circuit cards (tube plus resistors and other components) for tube units back in the late 1940s.  This way a defective unit could be removed and replaced quicly, and the defective unit repaired back at the factory.  This continued with SMS transistorized circuit cards and SLT chips.
>
>
Thinking about it if the Ferranti Pegasus from 1954 was designed to have 
a large number of identical boards , so according to Simon Lavington's 
book tells be a Pegasus 1 had 444 boards of 20 different types. The CPU 
proper uses only five types of board. Judging by the bin of spares that 
is next to the Peagsus in MOSI the Pegasus was fixed by board swapping.

In fact there was considerable presure to quickly fix a machine that was 
down and loosing money, so the ability to quickly fix machines came early.

Designing machines with large numbers of identical login boards also 
made sense.

Dave

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the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-19 11:57 -0700
  Re: the FORTH computer language mentificium@gmail.com - 2015-10-20 05:05 -0700
  Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-20 13:57 -0400
    Re: the FORTH computer language Daiyu Hurst <daiyu.hurst@gmail.com> - 2015-10-24 21:26 -0700
      Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-25 10:17 +0000
      Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-25 18:13 -0500
        Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-25 21:35 -0400
          Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:28 -0500
            Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-26 17:46 -0400
              Re: the FORTH computer language Peter Flass <peter_flass@yahoo.com> - 2015-10-26 17:49 -0400
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:29 -0500
              Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-27 19:55 +0000
  Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-21 11:45 +0100
    Re: the FORTH computer language Whiskers <catwheezel@operamail.com> - 2015-10-21 12:34 +0000
      Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-21 14:36 +0100
    Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-22 09:38 +0100
      Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-22 11:07 +0100
        Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-22 11:35 +0100
          Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-22 12:26 +0100
            Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-23 21:52 +0100
              Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-23 23:16 +0100
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-24 00:21 +0100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-24 13:23 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-24 15:25 +0000
                Re: the FORTH computer language Morten Reistad <first@last.name.invalid> - 2015-10-24 22:37 +0200
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-25 13:30 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-25 13:30 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-25 15:53 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-25 16:08 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-26 12:08 +0000
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-26 16:24 +0000
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-24 16:26 +0100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-25 13:30 +0000
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-25 16:33 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-26 12:03 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 06:49 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:02 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:18 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:28 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 07:39 -0700
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-26 16:25 +0000
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:36 -0500
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-26 17:41 -0400
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:26 -0500
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-27 22:47 -0400
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-27 12:22 +0000
                Re: the FORTH computer language Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-10-27 09:03 -0600
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:38 -0500
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-27 08:43 -0700
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:43 -0500
                Re: the FORTH computer language hankvc@blackhole.lostwells.org (Hank) - 2015-10-28 19:05 +0000
                Re: the FORTH computer language "78lp" <78lp@nospam.com> - 2015-10-28 16:08 +1100
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 05:43 -0700
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-27 15:37 -0500
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-27 18:48 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-28 12:58 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 08:15 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:37 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-30 04:58 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 12:19 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-28 12:58 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 11:08 -0700
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-28 18:46 +0000
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-28 17:58 -0400
                Re: the FORTH computer language David Hume <David.Hume@example.com> - 2015-10-28 22:04 +0000
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-28 17:39 -0500
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-29 00:13 -0400
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 22:52 -0600
                Re: the FORTH computer language "78lp" <78lp@nospam.com> - 2015-10-29 15:54 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 16:47 -0600
                Re: the FORTH computer language Walter Bushell <proto@panix.com> - 2015-11-04 12:04 -0500
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-29 05:54 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-29 07:21 -0700
                Re: the FORTH computer language Andrew Swallow <am.swallow@btinternet.com> - 2015-10-29 16:48 +0000
                Re: the FORTH computer language JimP <solosam90@gmail.com> - 2015-10-29 14:47 -0500
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-29 15:09 -0700
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-29 17:19 +0000
                Re: the FORTH computer language Greymaus <mausg@mail.com> - 2015-10-29 18:18 +0000
                Re: the FORTH computer language Ahem A Rivet's Shot <steveo@eircom.net> - 2015-10-29 18:02 +0000
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-29 19:37 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 11:28 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:42 -0600
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-29 14:49 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:57 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-30 08:39 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-31 13:22 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-31 09:36 -0600
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-31 09:47 -0700
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-01 15:14 +1100
                Re: the FORTH computer language David Wade <dave.g4ugm@gmail.com> - 2015-11-01 16:38 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-02 12:58 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-02 13:17 +0000
                Re: the FORTH computer language "Osmium" <r124c4u102@comcast.net> - 2015-11-02 10:05 -0600
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-31 15:23 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:44 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-30 12:25 -0700
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-31 13:22 +0000
                Re: the FORTH computer language David Wade <dave.g4ugm@gmail.com> - 2015-11-01 16:32 +0000
                Re: the FORTH computer language "Osmium" <r124c4u102@comcast.net> - 2015-11-01 11:03 -0600
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-11-01 12:48 -0500
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-02 13:17 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-03 07:16 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-03 12:55 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-04 08:07 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-11-04 13:52 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-05 08:52 +1100
                Re: the FORTH computer language Morten Reistad <first@last.name.invalid> - 2015-11-05 07:48 +0100
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-11-06 06:31 +1100
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-11-02 07:34 -0800
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-11-01 23:55 -0800
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-11-02 07:40 -0800
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-11-02 14:59 -0600
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-30 05:08 +1100
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-28 13:15 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Andrew Swallow <am.swallow@btinternet.com> - 2015-10-29 16:47 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-29 07:29 -0700
                Re: the FORTH computer language "gareth" <no.spam@thank.you.invalid> - 2015-10-29 14:47 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:53 -0600
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-29 15:24 -0500
                Re: the FORTH computer language scott@slp53.sl.home (Scott Lurndal) - 2015-10-28 13:20 +0000
                Re: the FORTH computer language hankvc@blackhole.lostwells.org (Hank) - 2015-10-28 18:54 +0000
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 12:47 -0700
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-28 15:46 -0400
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-28 12:50 -0700
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 08:33 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-30 04:55 +1100
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-31 15:18 +1100
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-29 19:34 +0000
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-29 19:43 +0000
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-29 20:04 +0000
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-29 13:28 -0700
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-30 16:43 +0000
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-29 15:37 -0400
                Re: the FORTH computer language rpw3@rpw3.org (Rob Warnock) - 2015-11-03 06:56 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-29 13:55 +0000
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-29 15:47 -0400
                Re: the FORTH computer language Lawrence Statton <lawrence@senguio.mx> - 2015-10-29 14:14 -0600
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-30 20:50 -0400
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-30 13:54 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-28 16:05 +1100
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-28 15:52 -0400
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-29 12:29 +1100
                Re: the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-29 15:51 -0400
                Re: the FORTH computer language Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-10-26 09:05 -0600
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:44 -0500
                Re: the FORTH computer language hancock4@bbs.cpcn.com - 2015-10-27 10:28 -0700
                Re: PDP-11, was the FORTH computer language John Levine <johnl@iecc.com> - 2015-10-26 17:19 +0000
                Re: PDP-11, was the FORTH computer language Rich Alderson <news@alderson.users.panix.com> - 2015-10-26 17:02 -0400
                Re: PDP-11, was the FORTH computer language pechter@S20.pechter.dyndns.org (William Pechter) - 2015-10-29 19:40 +0000
                Re: the FORTH computer language "Charles Richmond" <numerist@aquaporin4.com> - 2015-10-26 14:34 -0500
                Re: the FORTH computer language Huge <Huge@nowhere.much.invalid> - 2015-10-26 21:22 +0000
                Re: the FORTH computer language Morten Reistad <first@last.name.invalid> - 2015-10-27 07:00 +0100
                Re: the FORTH computer language timcaffrey420@gmail.com - 2015-10-27 10:15 -0700
                Re: the FORTH computer language scott@slp53.sl.home (Scott Lurndal) - 2015-10-27 20:09 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-27 06:42 +1100
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 15:22 -0700
                Re: the FORTH computer language Quadibloc <jsavard@ecn.ab.ca> - 2015-10-26 15:23 -0700
                Re: the FORTH computer language Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-10-27 19:55 +0000
                Re: the FORTH computer language Michael Black <et472@ncf.ca> - 2015-10-27 16:09 -0400
                Re: the FORTH computer language Elliott Roper <nospam@yrl.co.uk> - 2015-10-25 19:31 +0000
                Re: the FORTH computer language jmfbahciv <See.above@aol.com> - 2015-10-26 12:03 +0000
                Re: the FORTH computer language scott@slp53.sl.home (Scott Lurndal) - 2015-10-26 13:10 +0000
                Re: the FORTH computer language "Rod Speed" <rod.speed.aaa@gmail.com> - 2015-10-27 06:45 +1100
                Re: the FORTH computer language Stan Barr <plan.b@bluesomatic.org> - 2015-10-24 07:03 +0000

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