
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1830 (original); 1967 (model)
1885
1875
1865-1866
1880
1869
1870-1880
1879
circa 1885
2000-100 BCE
1875-1885
1882
circa 1868
1870s
1875
1872-1880
1934
1880
1884
1865
1867-1868
1875
1884
1877
1955; 1830
1867
1867
1872
1879
1876
1878
1867
1870-1881
1893-4
1870-1877
1870-1880
1876
1872 (original); 1909 (model)
1875
1884
1870
1879
1867
1865
1866
1872