
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1875
1885
1869
1889
1872
1884
1830 (original); 1967 (model)
1870
1870-1888
1872
1877
1886
1867
1867
1872
1888
1879
1876
1878
1867
1870-1881
1870-1877
1870-1880
1876
1872 (original); 1909 (model)
1875
1884
circa 1885
1870
1879
1889
1880-1889
1866
1889
1867-1868
1875
1884
1955; 1830
1870s
before 1889
before 1889
1872-1880
1893-4
1934
1879
1880
2000-100 BCE
1875-1885