IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This handheld electronic calculator ...

Sharp was a frontrunner among the many companies that began developing calculators throughout the 1960s and 1970s. Until 1970, Sharp was only the trade name of the Hayakawa Electric Industry Company; ...

You may recognize -- or have even used -- a few of these handheld classics. Once upon a time, calculators were massive desktop machines -- at first purely mechanical, then purely electronic. In the ...