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Curta calculator: The mechanical marvel born in a Nazi death camp
An Interview with Curt Herzstark
Curt Herzstark discusses the history of the Austrian Calculating Machine Manufacturing Company, his father's inventions and the development of the CURTA hand-held calculator.
conservancy.umn.edu"Curious History Pocket Calculator"
The document discusses the history and features of the Curta calculator, an innovative mechanical pocket calculator invented by Curt Herzstark during his time in a concentration camp.
computarium.lcd.lu(PDF) The Curta, a Technical Marvel
researchgate.net