
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1780-1850
1738-1777
1879
1701-1800
1690
1607-1653
1712-1713
1853-1857
1770
1879-1896
1829
1846
1601-1850
1829
1815-1825
circa 1861
1862
1632-1640
1623
1850
1781-1790
1777-1785
1831
1701-1800
1858
1877-1897
1885
1875
1744-1774
1884
1607-1618
1801-1830
1501-1600
1872
1858
1849
1675-1679
1760-1775
1791
1889
1690-1700
1795
1681
1847-1848
1775
1830 (original); 1967 (model)
1821
1869
1870