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OldCalculatorForum
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Welcome to the Old Calculator Forum for discussion of mechanical and early electronic calculators, especially those of the time of rapid technical development before 1980.
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willybill winkle
,
Nik Barbour
2
Jul 5
Old desktop calculator
There's one on ebay this week. £30 buy it now (so not in an auction). Link = https://www.ebay.co.
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Old desktop calculator
There's one on ebay this week. £30 buy it now (so not in an auction). Link = https://www.ebay.co.
Jul 5
mg
, …
Piotr Jachymczyk
14
Jul 5
Mechanical calculator repair manuals uploaded to archive.org
Hello, I just wanted to everyone to know that I uploaded quite a few materials for Addo and Facit
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Mechanical calculator repair manuals uploaded to archive.org
Hello, I just wanted to everyone to know that I uploaded quite a few materials for Addo and Facit
Jul 5
Philip Erasmus
Jun 8
ODHNER Mechanical Calculator
Good Morning, I have an ODHNER mechanical calculator Serial No 29-273455 Made in Sweden. Can anybody
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ODHNER Mechanical Calculator
Good Morning, I have an ODHNER mechanical calculator Serial No 29-273455 Made in Sweden. Can anybody
Jun 8
Huy Tran
May 29
Wanted: HP48GX
I am looking for any dead/nonfunctional HP48GX (not the HP48G) to use as parts for repairing my unit.
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Wanted: HP48GX
I am looking for any dead/nonfunctional HP48GX (not the HP48G) to use as parts for repairing my unit.
May 29
Seth Lipkin
,
Arthur Rosen
3
May 19
Antique mechanical collection, including Millionaire, TIM (Time Is Money), etc.
Excellent suggestion, thank you! On Tuesday, May 17, 2022 at 8:09:55 AM UTC-4 artro...@gmail.com
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Antique mechanical collection, including Millionaire, TIM (Time Is Money), etc.
Excellent suggestion, thank you! On Tuesday, May 17, 2022 at 8:09:55 AM UTC-4 artro...@gmail.com
May 19
Stephen Walters
May 18
Anyone looking for cheap summer project?
https://www.ebay.co.uk/itm/403656657929
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Anyone looking for cheap summer project?
https://www.ebay.co.uk/itm/403656657929
May 18
Friedrich
May 7
Compucorp
Hi, to your information: for sale. Compucorp 322G Micro-Computer, 1. progr. pocket calculator: https:
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Compucorp
Hi, to your information: for sale. Compucorp 322G Micro-Computer, 1. progr. pocket calculator: https:
May 7
Bradley Fechner
,
Paulos, Richard G
4
Apr 29
Wanted - HD3112 Serial BCD Adder IC for Casio 121-b Repair
Some info on the HD3112 chip: http://madrona.ca/e/eec/ics/serialadders.html here is a non-working
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Wanted - HD3112 Serial BCD Adder IC for Casio 121-b Repair
Some info on the HD3112 chip: http://madrona.ca/e/eec/ics/serialadders.html here is a non-working
Apr 29
Mark Pagliaro
2
Apr 15
Looking for any calculator that uses the same printhead as Sharp EL-2630g (no II proceeding)
On Friday, April 15, 2022 at 8:37:36 AM UTC-4 Mark Pagliaro wrote: Model 400 is written on the print
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Looking for any calculator that uses the same printhead as Sharp EL-2630g (no II proceeding)
On Friday, April 15, 2022 at 8:37:36 AM UTC-4 Mark Pagliaro wrote: Model 400 is written on the print
Apr 15
Gordon Geist
,
Paolo Cravero
2
Mar 24
Need Schematic for Texas Instruments PC-100C Security Cradle/Printer for TI-59/58
Gordon I cannot help you with the diagram, but I have reverse-engineered a K-80W calculator board
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Need Schematic for Texas Instruments PC-100C Security Cradle/Printer for TI-59/58
Gordon I cannot help you with the diagram, but I have reverse-engineered a K-80W calculator board
Mar 24
Laura Briggs
Mar 22
Vintage Calculator Collection Available in San Francisco
Hello Folks, My late brother was a passionate lifelong collector of vintage calculators. His
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Vintage Calculator Collection Available in San Francisco
Hello Folks, My late brother was a passionate lifelong collector of vintage calculators. His
Mar 22
ficolossale
, …
Mike Hatch
4
Mar 10
My Olympia RAE 4/30 has suddenly died?? :( :( :(
Use a variac, most old electronic will operate at lower inputs, it allows you to bring the power up
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My Olympia RAE 4/30 has suddenly died?? :( :( :(
Use a variac, most old electronic will operate at lower inputs, it allows you to bring the power up
Mar 10
Steve
Mar 2
Sumlock Anita Mark 8 at Auction
Sumlock Anita Mark 8 up for auction at RR Auction in Boston. Don't have the funds now, thought
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Sumlock Anita Mark 8 at Auction
Sumlock Anita Mark 8 up for auction at RR Auction in Boston. Don't have the funds now, thought
Mar 2
Andrea Celli
Feb 25
Re: [oldcalculatorforum] Brunsviga 13 / 20 main drum; how to change 10 carry disks?
Is the bolt cylindrical or does it have a variable diameter? In the second case you have to hit on
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Re: [oldcalculatorforum] Brunsviga 13 / 20 main drum; how to change 10 carry disks?
Is the bolt cylindrical or does it have a variable diameter? In the second case you have to hit on
Feb 25
Eduardo Paulisa
Feb 13
how to open Bowmar Count calulator
Hello, I recently purchased a Bowmar Count calculator. it has an AC input however I dont know what
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how to open Bowmar Count calulator
Hello, I recently purchased a Bowmar Count calculator. it has an AC input however I dont know what
Feb 13
Galgano Guidotti
Feb 12
Hello everyone!
Hello, I'm the lucky (?) owner of a BRUNSVIGA NOVA 13 Matr. 130421. Unfortunately, the machine
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Hello everyone!
Hello, I'm the lucky (?) owner of a BRUNSVIGA NOVA 13 Matr. 130421. Unfortunately, the machine
Feb 12
Paul Teagle
Jan 25
Re: [oldcalculatorforum] Abridged summary of oldcalculatorforum@googlegroups.com - 1 update in 1 topic
I think I have made a breakthrough! From John Wolff's Australian website, there is an Olivetti
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Re: [oldcalculatorforum] Abridged summary of oldcalculatorforum@googlegroups.com - 1 update in 1 topic
I think I have made a breakthrough! From John Wolff's Australian website, there is an Olivetti
Jan 25
Paul T
,
Ed Spittles
5
Jan 24
Help identifying an old calculator...from some vague recollections
Hi Ed, I looked at the "busicom" imagery in the link and pretty sure that wasn't it.
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Help identifying an old calculator...from some vague recollections
Hi Ed, I looked at the "busicom" imagery in the link and pretty sure that wasn't it.
Jan 24
Noah Lane
2
Jan 10
HP25, HP67, Timex Sinclair 1000, Post-Hemmi Bamboo Slide Rules, and more! (FSBO)
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HP25, HP67, Timex Sinclair 1000, Post-Hemmi Bamboo Slide Rules, and more! (FSBO)
Jan 10
Thomas Kirchhof
12/16/21
Victor 500-series with 9 columns - what model no.?
Hello, today i got an old Victor adding machine, sn 218871 (built maybe ca.1934?) It's very
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Victor 500-series with 9 columns - what model no.?
Hello, today i got an old Victor adding machine, sn 218871 (built maybe ca.1934?) It's very
12/16/21
Roland
, …
Steve
6
12/10/21
Anita MK8 on Ebay
So, was this a mark-8 or a mark-9 ? Do you know what it sold for? Thanks On Friday, August 9, 2019 at
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Anita MK8 on Ebay
So, was this a mark-8 or a mark-9 ? Do you know what it sold for? Thanks On Friday, August 9, 2019 at
12/10/21
Steve
,
Arthur Rosen
2
12/10/21
Info
I posted a listing of my 160 or so adding machines and calculators on the forums website. I listed it
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Info
I posted a listing of my 160 or so adding machines and calculators on the forums website. I listed it
12/10/21
Steve
12/10/21
Sumlock Anita Mark-8
Does anyone know how much a Sumlock Anita Mark-8 calculator sell for currently. Are they possible to
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Sumlock Anita Mark-8
Does anyone know how much a Sumlock Anita Mark-8 calculator sell for currently. Are they possible to
12/10/21
n b
, …
epo...@gmail.com
4
11/22/21
Help! Vintage Exodus LC-103 Mini Calc.
Hi this model is referenced as Type 262 in my inventory: http://www.epocalc.net/pages/mes_types_01.
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Help! Vintage Exodus LC-103 Mini Calc.
Hi this model is referenced as Type 262 in my inventory: http://www.epocalc.net/pages/mes_types_01.
11/22/21
hossnerbiz
11/19/21
Gem chain adder - 5 columns rare?
Hello! New member here :) I recently acquired a Gem adding machine. These were advertised back in the
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Gem chain adder - 5 columns rare?
Hello! New member here :) I recently acquired a Gem adding machine. These were advertised back in the
11/19/21
James Watson
11/8/21
Royal 112 TD
Hullo all! I happened to find a Royal 112 TD at a thrift shop the other day, and it works for the
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Royal 112 TD
Hullo all! I happened to find a Royal 112 TD at a thrift shop the other day, and it works for the
11/8/21
Helen May
, …
Enrique Marset
7
10/24/21
NEW PERMANENT EXHIBITION OF CALCULATORS AT THE UNIVERSITY OF ZARAGOZA (SPAIN). PART I
https://www.eldiario.es/hojaderouter/tecnologia/hardware/telesincro-factor-p-factor-s-joan-majo-
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NEW PERMANENT EXHIBITION OF CALCULATORS AT THE UNIVERSITY OF ZARAGOZA (SPAIN). PART I
https://www.eldiario.es/hojaderouter/tecnologia/hardware/telesincro-factor-p-factor-s-joan-majo-
10/24/21
Fran Ragel
10/23/21
Sell Calculator Busicom 141-pf
https://es.wallapop.com/item/calculadora-busicom-141-pf-vintage-697720326
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Sell Calculator Busicom 141-pf
https://es.wallapop.com/item/calculadora-busicom-141-pf-vintage-697720326
10/23/21
Christophe MERY
, …
Machine A Calculer
5
10/19/21
new website
Merci Marc Et merci pour le don Christophe Télécharger BlueMail pour Android Le 17 oct. 2021, à 15:30
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new website
Merci Marc Et merci pour le don Christophe Télécharger BlueMail pour Android Le 17 oct. 2021, à 15:30
10/19/21
CliffS
,
Kenton Green
2
10/13/21
Mechanical Calculators at SFO Airport
Thanks for setting this display up and sharing with the world. On Wednesday, September 29, 2021 at 1:
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Mechanical Calculators at SFO Airport
Thanks for setting this display up and sharing with the world. On Wednesday, September 29, 2021 at 1:
10/13/21