
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1770
1701-1800
1870
1632-1640
1879
1870
1858
1690
1607-1653
1791
1681
1501-1600
1775
1830 (original); 1967 (model)
1601-1850
1846
1801-1900
1885
1780-1850
1815-1825
circa 1861
1862
1771-1830
1630-1642
1865-1866
1801-1838
1860
circa 1897
1898
1875
1898
1899
1858
1795-1805
1877-1897
1889
1700-1850
1880
1744-1774
1845-1855
1801-1900
1554
1869
1829
1822
1849
circa 1900
1675-1679
1858