
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1830 (original); 1967 (model)
1885
1875
circa 1897
1877-1897
1889
1880
1879-1896
1888
before 1889
1886
1875
1884
1877
1884
1895
About 1890
1875-1890
1876
1878
1896
1872-1880
1893-4
1934
1896
1879
1880
2000-100 BCE
1875-1885
1875
1892
1886
1884
1882
circa 1885
1888
1890
1890
1896
1875
before 1889
1885-1894
1872
before 1889
1890
1890-1896
1892
1897