
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1903
1901-1930
1920-1925
1918-1920
1919
1877-1897
1900-1910
1897-1898
1839 (original); circa 1988 (replica)
1905
1895-1904
1923
1885
1952-3
1917
1875
circa 1900
1872
1880-1920
1900-1910
1880-1925
1880-1920
1880-1900
1874
1900-1910
1900-1920
1890-1930
c.1912
1879-1896
1907
1913
1874
1889
1907
1915-1925
1066; 1876
1903
1888
1878-1879
1872
1902
1930
circa 1930
before 1889
1910
1920-1925
before 1889
About 1890