
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1830 (original); 1967 (model)
1875
1865-1866
1880
1869
1865
1875
1877
1870-1880
1867
1867
1876
1878
1872-1880
1893-4
1934
1879
1880
2000-100 BCE
1875
1870
circa 1868
1875
1872
1867
1870-1877
1876
1872 (original); 1909 (model)
1867
1872
1865
1866
1870s
1865
1867-1868
1955; 1830
1879
1870-1880
1879
1872
1880
1873
1839 (original); circa 1988 (replica)
1874
1873
1872