
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1875
1872
1830 (original); 1967 (model)
1869
1870
1872
1872-1880
1934
1879
circa 1868
1875
1865
1867-1868
1875
1867
1867
1872
1879
1876
1878
1867
1865-1866
1870-1877
1870-1880
1876
1872 (original); 1909 (model)
1875
1870
1893-4
1880
2000-100 BCE
1870s
1877
1870-1880
1879
1865
1866
1955; 1830
1865
1873
1867
1872
1880
1865
1878
1934
1875-1877
1872