
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1903
1877-1897
1905
1895-1904
1839 (original); circa 1988 (replica)
1870
1897-1898
1885
1952-3
1875
circa 1900
1872
1870
1874
1907
1879-1896
1907
1874
1880-1900
1889
1066; 1876
1903
1888
1878-1879
1872
1902
1887-1903
1875-1890
1872-1880
1893-4
1934
1902-1907
1896
1879
1870-1890
1871-1900
after 1903
1886
1875
1877
1886
1882
1904
1908
circa 1885
1888
circa 1905
1890