
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1879-1896
1875
1858
1877-1897
circa 1861
1862
1885
1898
1858
1869
1889
1884
1897-1898
1884-1900
1830 (original); 1967 (model)
circa 1900
1870
1872
1880-1900
1870-1888
1872
1895
1896
1900
1886
1861 - 1900
circa 1861
1867
1867
1885-1894
1872
1859
1879
1876
1878
1858
1894
1865-1866
1858
1895-1900
1870-1881
1899
1890-1894
1860
1898
1870-1877
1892
1897