
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1872
1870
1871
1875
1868
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1870
1873
1874
1877
1934
circa 1868
1875
1873
1867
1893-4
2000-100 BCE
1870s
1875
1867
1867
1876
1870-1877
1876
1872 (original); 1909 (model)
1870
1867-1868
1875
1870-1875
1955; 1830
1872
1873
1990-96
1867
1888
1875-1877
1934
1876
1870-1875
1870-1875
1772 (original); 1919 (model)
1870
1801-1840 (original); 1901 (model)
1869