
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1903
1862
1877-1897
1900-1910
1897-1898
1839 (original); circa 1988 (replica)
1905
1895-1904
1870
1885
1952-3
1875
circa 1900
1872
1900-1910
1870
1880-1900
1874
1869
1900-1910
c.1912
1879-1896
1907
1874
1889
1907
1066; 1876
1903
1888
1878-1879
1872
1902
before 1889
1910
before 1889
About 1890
1910
1887-1903
1862-1912
1875-1890
1896
1901-1910
1906
1872-1880
1893-4
1899-1901
1934
1902-1907