
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1853-1857
circa 1861
1862
1850
1858
1875
1872
1858
1849
1830 (original); 1967 (model)
1869
1870
1872
1854
1860
1850-1870
1856
1861
1861
1934
1857-1870
circa 1868
1850
1848
1858
1875
1850
circa 1860
1865
1867-1868
1849
1875
1853
1852
circa 1861
1867
1867
1872
1859
1876
1878
1858
1855
1856
1867
1865-1866
1848-1852
1858
1851