
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1858
1830 (original); 1967 (model)
1846
1885
circa 1861
1862
1865-1866
1860
1875
1858
1889
1880
1845-1855
1869
1829
1822
1849
1858
1853-1857
1847-1848
circa 1842
1829
1888
1870-1888
before 1889
1854
1837
1860
1842
1870-1880
1842
1845-1855
1832
1845
About 1890
1842
1856
1861
1861
1830
1879
1840
1870-1890
1857-1870
1831-1870
1835