
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1875
1858
circa 1861
1862
1858
1869
1872
1830 (original); 1967 (model)
1870
1872
1854
circa 1861
1867
1867
1872
1859
1879
1876
1878
1858
1855
1865-1866
1858
1870-1881
1860
1870-1877
1870-1880
1876
1872 (original); 1909 (model)
1875
1862
1855
1870
1854
1857
1879
1865
1857-1858
1857-1858
1858-03-02
1866
1865
1867-1868
1875
1860
1955; 1830
1870s
1856