
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1879
1870
1878-1879
1872
circa 1880
1830 (original); 1967 (model)
1875
1879
1801-1840 (original); 1901 (model)
circa 1871
1873
1876
1874
circa 1880
1878
1775-1799 (original); 1900-1907 (model)
1668; 1924
1871
1870s
1610; 1923
1870s
1874
1879
1875
1877
1870
1878
circa 1880
1875
1870-1880
1876
1878
1872-1880
1893-4
1879
1870-1875
1879
1955; 1830
1642-1649 (original); 1883 (model)
1880
1871
1870-1880
1879
1870-1881
1870-1877
2000-100 BCE
1872 (original); 1909 (model)
1875