
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1870
1872
1830 (original); 1967 (model)
1875
1801-1840 (original); 1901 (model)
circa 1871
1876
1873
1775-1799 (original); 1900-1907 (model)
1874
1668; 1924
1871
1870s
1610; 1923
1870s
1874
1875
1877
1870
1870-1875
1872 (original); 1909 (model)
1955; 1830
1875
1875
1876
1893-4
1934
1870-1877
1871
1642-1649 (original); 1883 (model)
2000-100 BCE
1870s
1876
1877
1872
1870-1875
1870-1875
1870
1772 (original); 1919 (model)
1873
1870
1990-96
1871
1839 (original); circa 1988 (replica)
1870
1874
1930 (replica); 1834 (original)
1873