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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. |
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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. |
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Vintage Calculators - http://www.vintagecalculators.com/
A celebration of old calculators showing the evolution from mechanical calculator to hand held electronic calculator. |
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The Old Calculator Web Museum - http://www.oldcalculatormuseum.com
Photographs of the exterior and interior of many vintage mechanical and electronic calculators. Also includes vintage advertisements and technical literature. |
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Museum of Pocket Calculating Devices - http://www.calculators.de/
A gallery containing many varieties of pocket calculators, slide rules, and abacuses. |
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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. |
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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. |
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Programmable Calculators - http://www.rskey.org/
A collection of programmable and non-programmable calculators and accessories, with articles and repair notes. |
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Datamath Calculator Museum - http://www.datamath.org
An overview of the calculators manufactured by Texas Instruments Inc. from the famous Datamath (1972) to the modern Graphics calculators, with history and articles. |
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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. |
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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. |
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Calculator Technical Information - http://www.calcinfo.com/
Technical information about many calculators, including chip pinouts and self-test sequences, and patent information. |
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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. |
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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. |
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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. |
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Vintage Calculators - http://www.decodesystems.com/calculators.html
Information and lists of vintage and classic calculators, primarily Hewlett-Packard and Texas Instruments. |
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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. |
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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. |
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Calculator's Pages - http://www.calculators.szrek.com
A collection of early mechanical calculating machines and other calculating devices. |
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Reverse-Engineering the HP-75C - http://www.fortitudine.com/~coryc/html/hp75c.shtml
General information about the HP-75C. |