
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1879
1870
1858
1830 (original); 1967 (model)
1885
1862
1875
1865-1866
circa 1861
1858
1860
1889
1880
1869
1858
1853-1857
1888
1870-1888
before 1889
1886
1853
1865
1854
1875
1884
1852
1877
1860
1955; 1830
1884
1895
1870-1880
1858
1875
1850
circa 1861
1867
1867
About 1890
1856
1875-1890
1861
1861
1879
1876
1878
1858
1894