“In the US, in the 1880s, Herman Hollerith had designed and patented an electronic tabulating machine using punch cards to carry out calculations. Using this technology the Hollerith machine, in a pre computer age, was able to carry out complex accounting functions in a fraction of the time previously needed. Hollerith’s invention laid the basis for the foundation of IBM, which was to become one of the most profitable multinational corporations of the 20th Century. By the 1930s, IBM had become a leading US corporation under its Chief Executive, Thomas J. Watson, who was an open sympathizer of both Hitler and Mussolini. After Hitler came to power in 1933, Watson strove to build a strong commercial relationship between IBM and Nazi Germany. Through Dehomag, (IBM’s German subsidiary) IBM equipped Nazi Germany with Hollerith machines for numerous financial and statistical purposes. One use of the Hollerith machine was to compile data on German Jews - who they were and where they lived.” From a review of IBM and the Holocaust on getethical.com.