
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
1879
1870
1872
circa 1871
1870
1870
1879
1873
1877
1875
1879
1870-1880
1879
1875
1877
1955; 1830
1875
1870-1877
1882
circa 1868
1610; 1923
1879
1876
1878
1872-1880
1870-1881
1934
1872 (original); 1909 (model)
1875
1870
1870-1880
1876
1893-4
1880
2000-100 BCE
1870s
1879
1878
1870-1875
1871
circa 1880
1870-1880
1872
1880
1880
1873
1868