| |
| | Herman Hollerith Tabulating Machine |
 | | Hollerith's machines were also used for censuses in Russia, Austria, Canada, France, Norway, Puerto Rico, Cuba, and the Philippines, and again in the US census of 1900. |
 | | Between the 1880 and 1890 censuses, Hollerith spent a year (1882) on the Mechanical Engineering faculty at MIT, and then in the mid-1880s worked on railroad braking systems, obtaining several patents for both electromagnetic pneumatic brakes and vacuum operated brakes, as well as for corrugated metal tubing. |
 | | Hollerith, and to grant him the degree of Doctor of Philosophy upon the work which he has performed" and by the subsequent Trustees resolution of 7 April 1890, granting him the degree. |
| www.columbia.edu /acis/history/hollerith.html (606 words) |
|