
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1858
1830 (original); 1967 (model)
circa 1861
1862
1875
1865-1866
1860
1858
1869
1858
1854
1860
1856
1861
1861
1879
1857-1870
1858
2000-100 BCE
circa 1868
1870s
1875
1934
circa 1860
1861-1866
1864
1865
1867-1868
1875
1877
1955; 1830
circa 1861
1867
1867
1872
1879
1876
1878
1858
1855
1856
1867
1858
1893-4
1863-7
1870-1877