
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1853-1857
1846
1875
1850
1831
1858
circa 1861
1862
1858
1869
1872
1847-1848
1830 (original); 1967 (model)
1870
1849
1872
1842
1853
1854
1837
1837
1877
circa 1861
1835
1847
1867
1867
1872
1859
1842
1879
1876
1878
1858
1855
1856
1867
1865-1866
1848-1852
1858
1841
1851
1838
1844
1840-1860
1837
1844
1835-1845