
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1853-1857
1846
1862
1875
1850
circa 1861
1858
1885
1858
1869
1849
1884
1847-1848
1830 (original); 1967 (model)
1872
1870
1870-1888
1872
1870-1880
1853
1865
1867-1868
1849
1846-1859
1854
1875
1853
1884
1852
1877
1860
1955; 1830
1846
1886
1848
1858
1875
1850
circa 1860
circa 1861
1847
1845-1855
1845
1867
1867
1872
1859
1856