
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1830 (original); 1967 (model)
1885
1875
1898
1899
circa 1897
1898
1877-1897
1889
1880
circa 1900
1884-1900
1879-1896
1888
1880-1900
before 1889
1886
1890 - 1900
1875
1884
1877
1900
1884
1895
About 1890
1875-1890
1876
1878
1896
1872-1880
1893-4
1934
1900
1896
1879
1880
2000-100 BCE
1871-1900
1875-1885
1875
1892
1886
1884
1882
circa 1885
1888
1890
1898