
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1877-1897
1897-1898
1839 (original); circa 1988 (replica)
1870
1885
1875
1872
circa 1900
1870
1880-1900
1874
1869
1889
1879-1896
1874
1066; 1876
1888
1878-1879
1872
1875-1890
1896
1872-1880
1893-4
1934
1896
1879
1870-1890
1871-1900
1886
1875
1877
1886
1882
circa 1885
1888
circa 1868
1890
1890
1899
1896
1900
1895
1896
1870-1880
1890 - 1900
circa 1897
1898
before 1889