
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1858
1830 (original); 1967 (model)
1846
1885
1815-1825
circa 1861
1862
1865-1866
1860
circa 1897
1898
1875
1898
1899
1858
1877-1897
1889
1880
1845-1855
1869
1829
1822
1849
circa 1900
1858
1853-1857
1884-1900
1847-1848
1821
1879-1896
circa 1842
1829
1888
1870-1888
1880-1900
before 1889
1854
1837
1860
1842
1895
1870-1880
1842
1845-1855
1832
1845