
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
1879
1870
1872
1879
1879
1865
1882
1867-1868
1875
1877
1870
1866-1870
1878
1870-1875
circa 1868
1879
circa 1871
1870-1880
1865
1875
1867
1867
1870-1880
1955; 1830
1871
circa 1880
1879
1876
1878
1872-1880
1867
1865-1866
1865
1870-1881
1893-4
1866
1934
1870-1877
1879
1880
1875
2000-100 BCE
1870-1880
1864
1876
1870s
1872 (original); 1909 (model)