
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1853-1857
1850
1858
circa 1861
1862
1858
1869
1872
1830 (original); 1967 (model)
1870
1849
1872
1853
1854
circa 1861
1867
1867
1872
1859
1858
1855
1856
1867
1865-1866
1848-1852
1858
1851
1863-7
1860
1851
1852
1849
1872 (original); 1909 (model)
1862
1855
1870
1854
1850-1856
1857
1850-1857
1850-1870
1850-1870
1855-1860
1865
1857-1858
1857-1858
1858-03-02
1866
1865