This category is about collecting old calculators, mechanical and electronic. Included in this category is information about the acquisition, display, identification, and conservation of calculators.
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Sites 19
Technical information about many calculators, including chip pinouts and self-test sequences, and patent information.
A collection of early mechanical calculating machines and other calculating devices.
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.
Calculators from the '70s, and famous home and personal computers from '80s. Photos, historic information and links to other resources.
An overview of the calculators manufactured by Texas Instruments Inc. from the famous Datamath (1972) to the modern Graphics calculators, with history and articles.
Some articles about Russian made calculators, including undocumented features and error conditions.
Matthias Wehrli's collection of HP calculators and accessories. Includes photographs and specifications for items in the collection.
A library of information about the HP-41 series calculators, with emulators, publications, FAQ, and related links.
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.
Information about every HP calculator made since 1968. Includes photo gallery, old advertisements, operating instructions, pricing information and discussion forum.
A gallery containing many varieties of pocket calculators, slide rules, and abacuses.
Photographs of the exterior and interior of many vintage mechanical and electronic calculators. Also includes vintage advertisements and technical literature.
Photographs and information about HP and TI calculators, including many programs.
A collection of programmable and non-programmable calculators and accessories, with articles and repair notes.
General information about the HP-75C.
A collection of information about HP, TI and Curta calculators. Includes articles and many related links.
All about the TI-59 programmable calculator, with photographs and information about accessories, documentation and programs.
A celebration of old calculators showing the evolution from mechanical calculator to hand held electronic calculator.
Information and lists of vintage and classic calculators, primarily Hewlett-Packard and Texas Instruments.
A library of information about the HP-41 series calculators, with emulators, publications, FAQ, and related links.
General information about the HP-75C.
A collection of early mechanical calculating machines and other calculating devices.
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.
Photographs and information about HP and TI calculators, including many programs.
Matthias Wehrli's collection of HP calculators and accessories. Includes photographs and specifications for items in the collection.
A gallery containing many varieties of pocket calculators, slide rules, and abacuses.
Photographs of the exterior and interior of many vintage mechanical and electronic calculators. Also includes vintage advertisements and technical literature.
A collection of programmable and non-programmable calculators and accessories, with articles and repair notes.
A collection of information about HP, TI and Curta calculators. Includes articles and many related links.
An overview of the calculators manufactured by Texas Instruments Inc. from the famous Datamath (1972) to the modern Graphics calculators, with history and articles.
Information about every HP calculator made since 1968. Includes photo gallery, old advertisements, operating instructions, pricing information and discussion forum.
All about the TI-59 programmable calculator, with photographs and information about accessories, documentation and programs.
Some articles about Russian made calculators, including undocumented features and error conditions.
Calculators from the '70s, and famous home and personal computers from '80s. Photos, historic information and links to other resources.
A celebration of old calculators showing the evolution from mechanical calculator to hand held electronic calculator.
Technical information about many calculators, including chip pinouts and self-test sequences, and patent information.
Information and lists of vintage and classic calculators, primarily Hewlett-Packard and Texas Instruments.
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.
