
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1858
1830 (original); 1967 (model)
1846
1885
circa 1861
1862
1875
1865-1866
1860
1858
1889
1880
1845-1855
1869
1849
1858
1853-1857
1847-1848
1879-1896
circa 1842
1888
before 1889
1870-1888
1854
1837
1860
1842
1895
1870-1880
1842
1845-1855
1832
1845
About 1890
1842
1856
1861
1861
1896
1830
1896
1879
1840
1857-1870
1831-1870
1835