Calculators Websites

Information about every HP calculator made since 1968. Includes photo gallery, old advertisements, operating instructions, pricing information and discussion forum.

A celebration of old calculators showing the evolution from mechanical calculator to hand held electronic calculator.

A gallery containing many varieties of pocket calculators, slide rules, and abacuses.

Technical information about many calculators, including chip pinouts and self-test sequences, and patent information.

A collection of programmable and non-programmable calculators and accessories, with articles and repair notes.

A source of information about the technology used in the construction of early electronic calculators. Includes a reverse-engineering project.

An overview of the calculators manufactured by Texas Instruments Inc. from the famous Datamath (1972) to the modern Graphics calculators, with history and articles.

Bulletin board for collectors of old electronic calculators.

Pictures of calculators from the former USSR. Includes advertisements, articles, and a guestbook. English and Russian languages.

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.

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.

All about the TI-59 programmable calculator, with photographs and information about accessories, documentation and programs.

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.

Preserving the history of electronic calculators with information and photographs of early desktop and pocket calculators.

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.

Webring designed to allow navigation between similar sites dealing with the hobby of collecting, and history of electronic calculators.