
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1903
1936
1949
1935
1901-1930
1862
1920-1950
1919
1942
1877-1897
1920-1925
1934
1860
1918-1920
1900-1910
1905
1895-1904
1839 (original); circa 1988 (replica)
1870
1934
1897-1898
1920-1950
1923
1885
1952-3
1917
1875
1946
circa 1900
1872
1920-1950
1860-1920
1880-1920
1940-1944
1945
1900-1910
1870
1880-1925
1880-1920
1860-1916
1940
1874
1869
1950
1900-1910
1920-1950
1920-1950
1907