
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1770
2019
1860
1877-1897
1920-1950
1872
2013
1920-1950
1939-1955
1625
1858
1849
1949
1960-1970
1607-1653
1700
1760-1775
1640
1889
1920-1950
1847-1848
1915-1925
1801
1948-1950
1999
circa 1832
1872
circa 1964
1944
1885-1894
1890
1859
1770
1785-1790
1784
1630-1653
1815
1660-1665
1660-1665
1660-1665
1660-1665
1750-1760
1568-1590
1784
1755
1695-1702
1769
1663
1574