1/? the (abridged) story of Curt Herzstark, the brilliant Viennese engineer who invented an incredibly complex handheld mechanical calculator in the Buchenwald concentration camp

And then the first World War started, and the difficulties began. Unfortunately after the war began, the production of calculating machines was no longer possible. Many of the personnel had to enlist and the factory had to produce military equipment, specifically Schrapnel ignitors. This type of work requires precision. The ignitor is suspended... See more