
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1879-1896
1875
1877-1897
1862
1885
1898
1869
1889
1872
1884
1897-1898
1884-1900
1830 (original); 1967 (model)
1870
circa 1900
1870-1888
1880-1900
1872
1895
1896
1900
1886
1867
1867
1885-1894
1872
1890
1888
1879
1876
1878
1894
1865-1866
1895-1900
1870-1881
1899
1890-1894
1898
1870-1877
1892
1897
1890-1900
1870-1880
1891-1900
1876
1880-1890
1880-1899
1885-1895