
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1870
1858
1830 (original); 1967 (model)
circa 1861
1862
1865-1866
1860
1875
1858
1869
1858
1860
1856
1861
1861
1857-1870
1858
circa 1860
1865
1867-1868
1875
1955; 1830
1867
1867
1872
1876
1858
1855
1856
1867
1858
1893-4
1934
1863-7
1875
circa 1861
2000-100 BCE
1861-1866
1864
1876
1872 (original); 1909 (model)
1875
1862
1855
1870
circa 1868
1857
1867