
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1780-1850
1879
1829
1853-1857
1846
1829
1875
1831
1858
1815-1825
circa 1861
1862
1850
1781-1790
1858
1869
1791
1795
1847-1848
1830 (original); 1967 (model)
1849
1870
1801-1830
1821
1872
1872
1842
1854
1837
1794
1837
circa 1861
1835
1847
circa 1805
1867
1867
1872
1859
1807
1782-1793
1785-1790
1784
1815
1815
1842
1795-1810
1879
1876