
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1953
1949
1770
1934
1780-1850
1948-1953
1879
1392
circa 1832
1870
1935
1853-1857
1950-1952
2008-2010
1872
1945
circa 1919
1978
1829
1976
1955
1675-1679
1775-1785
1797-1804
1917
1956
1956
1982
1776
1950-1953
1650
1802
1876
1913
1978
1996
1940-1945
1728
1726-1728
1967
1763
1761
1650-1660
1680-1685
1936
1845-1855
1991-2002
1974
1976