
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1830 (original); 1967 (model)
1885
1875
1880
1870-1880
1879
1886
circa 1885
1884
1875
1884
1877
1955; 1830
1872
1879
1876
1878
1872-1880
1870-1881
1893-4
1934
1870-1877
1880
1886
1875
2000-100 BCE
1870-1880
1875-1885
1876
1872 (original); 1909 (model)
1875
1884
1882
1870
1879
1870s
1872
1872
1880
1873
1872
circa 1880
1884
1885
1870-1880
1930 (replica); 1834 (original)