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A sampling from our Member Sites(s) Use the link above to review/visit
My collection of electronic calculators, other calculating devices and curiosities.
Soemtron ETR Calculators models: 220 222 224
A website for the East German Söemtron ETR range of electronic calculators. Covering the rebuilding of a very badly kept Söemtron 220, this site has circuits, logic diagrams, photos and more information for these increasingly rare early Eastern Bloc electronic calculators.
Anita Calculator simulators
Dedicated to the collection and simulation of vintage calculators made at the Sumlock Anita Electronics Ltd. factory in Portsmouth during the 60s and 70s.
Database of HP-35 Version 1 - Red Dot
The HP-35 was HP's first pocket calculator. The earliest and the only production version 1 "Red Dot" had a red dot to the right of the power switch that showed when it was turned on. This page contains references to probably most of known and still existing Red Dots. The list will be continuously updated when new information will be gathered.
Christoph Lorenz' Calculator Page
Photos and Articles about vintage electronic calculators.
Click here to preview and visit the 12 member sites in
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