
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1872
1870
1871
1875
1874
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1873
1870
1877
1934
1875
1875
1876
1875
1870
1870-1875
1955; 1830
1873
1893-4
1870-1877
2000-100 BCE
1876
1870s
1872 (original); 1909 (model)
1872
1873
1990-96
1870
1888
1875-1877
1934
1930 (replica); 1834 (original)
1874
1872
1877
1876
1870-1875
1870-1875
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1873
1875
1705-1737
1870-1877