The Curta was the first computational precision machine could be held in one hand and mechanical wa

The Curta was the first computational precision machine could be held in one hand and mechanical was not online. He could add, subtract, multiply, divide and extract square and cube roots. The inventor of the Curt Herzstark, completed the design during incarceration in Buchenwald concentration camp during World War II. The Curta was widely used by scientists, engineers, surveyors and accountants in the 1950s and 1960s, to be sidelined until after the appearance on the market of electronic pocket calculators in the 1970s
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