
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1867-1868
1870
circa 1868
circa 1871
1867
1867
1955; 1830
1871
1893-4
2000-100 BCE
1870s
1867
1934
1870
1868
1772 (original); 1919 (model)
1870
1990-96
1801-1840 (original); 1901 (model)
1830 (original); 1967 (model)
1867
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1871
1870
4000-2001 BCE
1869
1930 (replica); 1834 (original)
1705-1737
1888
1934
1870-1877
1925; 1862
circa 1868
1834-1836
1867 - 1949
1870
1870
1870
1870
July 1867
1868
1867
1889-02
1870
1871
1871
1870-1871