The Museum of HP Calculators displays and describes older Hewlett-Packard calculators. There are also sections on calculating machines and slide rules as well as sections for buying and selling HP calculators, an HP timeline, collecting information and a software library.

Old calculators: desk mechanical & electronic; british hand-held british sterling currency #sd calculators; comptometers; photographs showing the old technology including early integrated circuits and delay line memories; collector showing pictures of collection from many years of collecting.

Museum of Soviet calculators. Displays handheld and desktop calculators from the 1900s to the present, showing interesting features of each.

Programmable Calculators . Quite possibly, it was my encounter with a Texas Instruments SR-52 calculator in 1975 or thereabouts at a Budapest repair shop that played the critical role in my later choice of computer programming for a career. I have owned a programmable calculator since I was sixteen (when I spent an entire summer's worth of student income to acquire one.) Recently, however, I ...

Mechanical Calculating Machines - This site by by Erez Kaplan, is all about mechanical calculating machines. It includes chronological description, classification and pictorial view (dozens of photographs), books, organizations and much more. ...

Datamath Calculator Museum ...

Museum of Pocket Calculating Devices ...

Yahoo! Groups - Free, easy email groups ...

Gregory Escov's homepage; for now it contains a few mini-articles about Soviet programmable micro-calculators ...