
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1853-1857
1846
1850
1858
circa 1861
1862
1858
1869
1872
1847-1848
1830 (original); 1967 (model)
1870
1849
1872
1842
1853
1854
circa 1861
1847
1867
1867
1872
1859
1842
1858
1855
1865-1866
1848-1852
1858
1851
1844
1844
1860
1851
1852
1849
1872 (original); 1909 (model)
1862
1855
1842
1870
1854
1850-1856
1857
1845-1851
1846
1865
1857-1858
1857-1858