
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1858
1830 (original); 1967 (model)
1885
circa 1861
1862
1875
1865-1866
1860
1858
1889
1880
1869
1858
1888
before 1889
1870-1888
1860
1870-1880
1861
1861
1879
1857-1870
1886
circa 1885
1858
2000-100 BCE
1875-1885
1882
1888
circa 1868
1870s
1886
1875
1872-1880
1934
1880
circa 1860
before 1889
before 1889
1861-1866
1864
1884
1865
1867-1868
1875
1884