
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1905
1870
1879
1952-3
1870
1895-1904
1903
1846
1858
1907
1830 (original); 1967 (model)
1885
1862
circa 1897
1902
1875
1895-1905
1865-1866
1898
1899
circa 1861
1858
1898
1860
1877-1897
1889
1880
1869
circa 1900
1845-1855
1879-1896
1858
1853-1857
1849
1884-1900
1847-1848
1888
1870-1888
1880-1900
before 1889
1886
1890 - 1900
1853
1865
1849
1846-1859
1854
1875
1884