John Wolff's Web Museum

Calculating Machines

Mechanical Calculators

by Category

by Manufacturer

Early Electronic Calculators

by Brand Name

Other Manufacturers

Canon
Casio
Compucorp
Facit
Friden
Hewlett-Packard
Olivetti
Sanyo
Sharp

Overview of Early Developments
Other Brands - Desktop
Other Brands - Portable
Calculators in the Laboratory
Full Index by Make and Model
Technical section - mechanisms, manuals, repairs...

Original text and images on these pages are Copyright © John Wolff 2002-2020 and may not be reproduced without permission.
Last Updated: 10 November 2020 - added Addo/Multo
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