
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1872
1871
1875
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1873
1874
1877
1878
1934
1875
1875
1873
1893-4
2000-100 BCE
1876
1955; 1830
1872 (original); 1909 (model)
1876
1878
1875
1872
1873
1990-96
1878
1888
1875-1877
1934
1878
1801-1840 (original); 1901 (model)
1873
1875
1705-1737
1878
1872
1875-1878
4000-2001 BCE
1830 (original); 1967 (model)
1930 (replica); 1834 (original)
1876
1772 (original); 1919 (model)
1874
1872
1877
1668; 1924
1877