  |
The Museum of HP Calculators - http://www.hpmuseum.org
Information about every HP calculator made since 1968. Includes photo gallery, old advertisements, operating instructions, pricing information and discussion forum. |
| |
Mechanical Calculating Machines - http://www.webcom.com/calc/
Mechanical calculating machines from a collector's point of view, with articles and links to relevant sites. |
| |
Bring Back the HP 15C - http://hp15c.org/
Fans of the 15C want Hewlett-Packard to put it back in production. Find a list of reasons to bring it back, the reason it was discontinued in the first place, and an online petition. |
| |
The X-Number World of Calculators - http://www.dotpoint.com/xnumber
A collection of articles about the history of calculators, mechanical and electronic. Also, a number of on-line calculators, recommended books, and a vintage collectors forum. |
| |
Rick Furr's Calculator Reference Page - http://www.vcalc.net
A collection of information about HP, TI and Curta calculators. Includes articles and many related links. |
| |
Programmable Calculators - http://www.rskey.org/
A collection of programmable and non-programmable calculators and accessories, with articles and repair notes. |
| |
Illustrated Calculating Machines by Ernst Martin - http://www.rechenmaschinen-illustrated.com/
English translation of the most important book on calculating machines "Rechenmaschinen" by Ernst Martin is illustrated on this site. Includes .pdf version of the book, pictures of the machines, production years, and articles. |
| |
Soviet Calculators Collection - http://www.rk86.com/frolov/calcolle.htm
Pictures of calculators from the former USSR. Includes advertisements, articles, and a guestbook. English and Russian languages. |
| |
HP-41 Archive Site - http://www.hp41.org
A library of information about the HP-41 series calculators, with emulators, publications, FAQ, and related links. |
| |
Texas Instruments 59 - http://www.ti59.com/index.html
All about the TI-59 programmable calculator, with photographs and information about accessories, documentation and programs. |
| |
Calculator's Pages - http://www.calculators.szrek.com
A collection of early mechanical calculating machines and other calculating devices. |
| |
Calculator Technical Information - http://www.calcinfo.com/
Technical information about many calculators, including chip pinouts and self-test sequences, and patent information. |
| |
Soviet Calculators History - http://www.dotpoint.com/xnumber/russian_calcs.htm
Article about the history of the development of Soviet calculators, the features and interesting characteristics of the most relevant models are described. |
| |
Calculating Machines - http://www.calculi.nl/
The private collection of the Dutch collector Nico Baaijens of mechanical, electro-mechanical and electronic counting, adding and calculating machines. Many pictures and close-ups. |
| |
Old HP and TI Calculators - http://www.rskey.org/gene/hpgene/
Photographs and information about HP and TI calculators, including many programs. |
| |
Curta Calculating Machines - http://www.teleport.com/~gregsa/curta/
Links to useful sites about the Curta. Also documents the full disassembly of one, with pictures. |
| |
Museum of Soviet Calculators - http://www.taswegian.com/MOSCOW/soviet.html
Displays handheld and desktop calculators from the 1900s to the present, showing interesting features of each. |
| |
Casio FX-700P Programmable Calculator - http://www.pisi.com.pl/piotr433/index.htm
Technical information about hardware, interfacing, and programming of this vintage device. Includes a construction project for a storage device to emulate the original FA-3 cassette interface. |
| |
Collection of Calculators, Portable Computers and Vintage Electronics - http://web.tiscali.it/city/
Calculators from the '70s, and famous home and personal computers from '80s. Photos, historic information and links to other resources. |
| |
The Famous Slide Rule Page - http://www.geocities.com/ResearchTriangle/Forum/7787/sliderule_collecting.htm
Pictures and descriptions of The Castell Addiator and The Rapid-Calcolo. |
| |
Be Calc - http://www.devidts.com/be-calc/
Serge Devidts' collection of vintage electronic calculators and some other pieces of old technology. |
| |
Stellatron Calculators - http://website.lineone.net/~lineup/st-pages/calcmain.html
An A-Z index of manufacturers, with product photographs, and a timeline of model releases. |
| |
Gregory Escov's homepage - http://members.tripod.com/GregEscov/
Some articles about Russian made calculators, including undocumented features and error conditions. |
| |
Calculator Collecting - http://k.webring.com/hub?ring=calculator
Webring designed to allow navigation between similar sites dealing with the hobby of collecting, and history of electronic calculators. |
 |
Anita Calculator Simulators - http://www.lyvedon-way.fsnet.co.uk/calc/CALC.HTM
A collection of Sumlock Anita calculators and simulators, and related devices associated with the Sumlock factory in Portsmouth, UK, in the 60s and 70s. |