
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1870
1846
1858
1830 (original); 1967 (model)
1862
1875
1865-1866
circa 1861
1858
1860
1869
1858
1853-1857
1849
1847-1848
1853
1865
1849
1846-1859
1854
1875
1852
1877
1860
1955; 1830
1846
1848
1858
1875
1850
circa 1861
1847
1867
1867
1856
1861
1861
1876
1878
1858
1855
1848-1852
1858
1893-4
1851
1934
1850
1851