
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
1862
1879
1870
circa 1871
1872
1858
1860
1862
1870
1870
1855
1879
1873
1877
1860
1858
1875
circa 1860
1863-1865
1856
1861
1861
1893-4
1879
2000-100 BCE
1861-1866
1864
1870s
1857-1870
1871
1855-1870
1879
1878
1860
circa 1868
1610; 1923
circa 1861
circa 1861
1879
1876
1878
1855
1867
1858
1934
1872 (original); 1909 (model)
1860-1877