Early Calculator: Sad Story of an Inventor A Viennese engineer worked meticulously in a concentration camp on the world's first pocket calculator. After the war, others profited from his invention. Curt Herzstark's fate seemed to be sealed in 1943 when the Nazis sent him to Buchenwald concentration camp. But then Herzstark, the son of a Jewish industrialist, received the unexpected opportunity to become an Aryan.
July 6, 2013 - ABC News