
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1905
1870
1917
1879
1952-3
1870
1895-1904
1903
1907
1830 (original); 1967 (model)
1885
1862
circa 1897
1902
1875
1895-1905
1901-1910
1865-1866
1890-1910
1898
1899
1898
1877-1897
1889
1901-1913
1880
1869
circa 1900
circa 1915
1879-1896
c.1912
1913
1884-1900
1888
1870-1888
1880-1900
before 1889
1886
1890 - 1900
1865
1870-1910
1875
1884
1901
1877
1910
1900
1955; 1830
1884