
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1903
1877-1897
1839 (original); circa 1988 (replica)
1905
1900-1910
1897-1898
1895-1904
1870
1885
1952-3
1917
1875
1872
circa 1900
1880-1900
1874
1889
1900-1910
1900-1910
1870
c.1912
1907
1879-1896
1907
1913
1874
1066; 1876
1903
1888
1878-1879
1872
1642-1649 (original); 1883 (model)
1870-1910
1875
1884
1901
1877
1910
1900
1955; 1830
1914
1895
1896
1870-1880
1886
1890 - 1900
1870-1910
1875