
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1903
1879
1879-1896
1875
1858
1877-1897
circa 1861
1862
1885
1898
1952-3
1858
1869
1889
1872
1884
1897-1898
1884-1900
1830 (original); 1967 (model)
circa 1900
1870
1870-1888
1880-1900
1872
1895
1896
1900
1886
1861 - 1900
circa 1861
1902
1867
1867
1885-1894
1872
1890
1859
1860-1896
1888
1879
1876
1878
1858
1894
1855
1865-1866
1858
1895-1900
1870-1881