
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1905
1919
1870
1917
1879
1920-1925
1952-3
1870
1895-1904
1901-1930
1903
1858
1907
1830 (original); 1967 (model)
1915-1925
1885
1902
1875
1901-1910
1865-1866
1880-1920
1880-1920
1890-1910
1898
1899
circa 1861
1862
circa 1897
1898
1920
1877-1897
1889
1858
1901-1913
1895-1905
1860
1918-1920
1901-1930
1880
1869
circa 1900
circa 1915
1858
1900-1920
c.1912
1913
1925-1926
1901-1920
1884-1900