Curta calculator: The mechanical marvel born in a Nazi death camp

In that respect, the American consumer boom represented the final flowering of the Connecticut Valley machine tradition of Thomas Blanchard, John Hall, and the great superintendents at the Springfield Armory. The woman who breaks the bobbin on her sewing machine while running up curtains at home and the soldier in the field with a broken gunlock pr

The counter was so useful when it did work that our customers tolerated its unreliability.

The 512A was an example of how, if good problems led to good inventions, then good inventions likewise would lead to other related inventions, and that nothing was too small or incidental to be excepted from improvement. Indeed, the system demanded so much improvement, so much in the way of new products, so much insurance of durability, that new me

Babbage invented his own machine, a great, gleaming engine of brass and pewter, comprising thousands of cranks and rotors, cogs and gearwheels, all tooled with the utmost precision. He spent his long life improving it, first in one and then in another incarnation, but all, mainly, in his mind. It never came to fruition anywhere else. It thus occupi