A library of information about the HP-41 series calculators, with emulators, publications, FAQ, and related links.
A collector displays his small collection of old calculator models.
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.
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.
Calculators from the '70s, and famous home and personal computers from '80s. Photos, historic information and links to other resources.
Pictures and descriptions of The Castell Addiator and The Rapid-Calcolo.
Photographs of the exterior and interior of many vintage mechanical and electronic calculators. Also includes vintage advertisements and technical literature.
A collection of early mechanical calculating machines and other calculating devices.
Information about various HP calculator models, with photographs. Includes instructions on using some of the special functions of some models.
Computers /
Hardware /
Calculators
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