
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1862
1860
1839 (original); circa 1988 (replica)
1870
1875
1872
1858
1874
1869
1849
1853-1857
1870
1847-1848
1846
1874
1066; 1876
1872
1642-1649 (original); 1883 (model)
1853
1865
1867-1868
1849
1846-1859
1854
1875
1853
1852
1860
1955; 1830
1846
1848
1858
1875
1850
circa 1860
circa 1861
1847
1867
1867
1859
1856
1861
1861
1876
1858
1855
1856
1867
1865-1866