Bus 311 – Hardware
Herman Hollerith
Graduates Columbia School
of Mines 1879
Takes job at Census Bureau 1880
Census takes 7 years
Leaves in 1884 to build tabulating machine
Herman Hollerith
Graduates Columbia School
of Mines 1879
Takes job at Census Bureau 1880
Census takes 7 years
Leaves in 1884 to build tabulating machine