
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1872
1866-1870
1870
1871
1875
1868
1874
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1873
1870
1934
circa 1868
1865
1875
1875
1867
1867
1865-1866
1865
1866
1875
1870
1867-1868
1870-1875
1955; 1830
1873
1865
1867
1893-4
2000-100 BCE
1870s
1872 (original); 1909 (model)
1872
1873
1990-96
1867
1870
1888
1934
1865
1930 (replica); 1834 (original)
1874
1869
1872