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