
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1879-1896
1875
circa 1861
1862
1885
1869
1889
1872
1884
1830 (original); 1967 (model)
1870
1870-1888
1872
1895
1896
1886
circa 1861
1867
1867
1885-1894
1872
1890
1860-1896
1888
1879
1876
1878
1894
1865-1866
1870-1881
1890-1894
1860
1870-1877
1892
1870-1880
1876
1880-1890
1885-1895
1880-1890
1872 (original); 1909 (model)
1875
1892
1862
1884
circa 1885
1870
1879
1889