
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1862
1860
1839 (original); circa 1988 (replica)
1870
1875
1872
1870
1874
1869
1874
1066; 1876
1878-1879
1872
1861
1861
1872-1880
1934
1879
1861-1866
1875
circa 1860
1877
1882
circa 1868
circa 1861
1860
1870-1880
1867
1867
1879
1876
1878
1865-1866
1875
1862
1870
1865
1875
1955; 1830
1879
1865
1866
1865
1870-1881
1870-1877
1870-1880
1876
1872 (original); 1909 (model)