
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1830 (original); 1967 (model)
1885
1875
1889
1880
1869
1879-1896
1888
before 1889
1870-1888
1895
1870-1880
About 1890
1896
1896
1879
1886
circa 1885
circa 1890
circa 1890
circa 1890
circa 1890
1896
2000-100 BCE
1875-1885
1882
1888
circa 1868
1890
1890
1896
1870s
1886
1875
1875-1890
1872-1880
1934
1880
before 1889
before 1889
1870-1890
1884
1867-1868
1875
1884
1877