
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
1879
1870
1872
1879
1879
1875
1877
1870
1878
1870-1875
1879
circa 1871
1875
1955; 1830
1871
1879
1876
1878
1893-4
1934
1870-1877
1879
1875
2000-100 BCE
1876
1870s
1872 (original); 1909 (model)
1875
1872
1870-1875
1870
1870-1875
1772 (original); 1919 (model)
1873
1870
1990-96
1879
1801-1840 (original); 1901 (model)
1830 (original); 1967 (model)
1876
1878
1877
1839 (original); circa 1988 (replica)
1874
1869
1930 (replica); 1834 (original)
1873