
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1862
1860
1877-1897
1839 (original); circa 1988 (replica)
1897-1898
1870
1885
1875
1872
circa 1900
1880-1900
1858
1874
1869
1889
1853-1857
1870
1879-1896
1874
1066; 1876
1888
1878-1879
1872
1642-1649 (original); 1883 (model)
1853
1865
1867-1868
1854
1875
1853
1884
1852
1877
1860
1900
1955; 1830
1895
1896
1870-1880
1886
1890 - 1900
1858
1875
1850
circa 1860
circa 1897
1861 - 1900
circa 1861