
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1829
1853-1857
1846
1829
1875
1831
1858
circa 1861
1862
1850
1858
1869
1847-1848
1830 (original); 1967 (model)
1849
1870
1821
1872
1872
1842
1854
1837
1837
circa 1861
1835
1847
1867
1867
1872
1859
1842
1879
1876
1878
1858
1865-1866
1848-1852
1858
1851
1844
1837
1844
1860
1821
1851
1852
1820-1840
1870-1877