
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1870
1872
1839 (original); circa 1988 (replica)
1874
1705-1737
1830 (original); 1967 (model)
1872
1879
1870s
1875
1877
1955; 1830
1875
1875
1879
1876
1878
1893-4
1934
1870-1877
2000-100 BCE
1876
1872 (original); 1909 (model)
1875
1870
1879
1872
1873
1872
1870
1878
1934
1875-1877
1870-1877
1872
1930 (replica); 1834 (original)
1874
1873
1925; 1862
1879
1879
1878
1888
1873
1875-1878
4000-2001 BCE
1878
1870