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 small key-set manually operated ...

This full-keyboard, non-printing manually operated pinwheel calculating machine has a metal frame painted black and nine columns of plastic keys, with three columns black, three columns white, and ...

Christie’s, the British auction house, has halted the sale of the world's first calculator “La Pascaline” in Paris. The auction of the first calculating machine was scheduled for Wednesday, but the ...