
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
1879
1870
circa 1871
1872
1870
1870
1879
1873
1877
1875
1893-4
1934
1879
2000-100 BCE
1870s
1871
1879
1878
1610; 1923
1875
1877
1870-1875
1879
1955; 1830
1875
1879
1876
1878
1870-1877
1876
1872 (original); 1909 (model)
1875
1870
1872
1873
1990-96
1876
1870-1875
1870-1875
1772 (original); 1919 (model)
1870
1879
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1879