
Difference Engine No. 1
circa 1832
circa 1832
1838
1835
1831
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
1837
1837
1837
1835
1955; 1830
1837
1838
1863-7
1833
1831
1836
1834
1832
1831
1893-4
1934
1837
2000-100 BCE
1837
1837
1838
1834
1834
1838
1832
1990-96
1833
1705-1737
1835
1835
1870-1877
4000-2001 BCE
1930 (replica); 1834 (original)
1837
1838
1837
1832
1772 (original); 1919 (model)
1610; 1923
1642-1649 (original); 1883 (model)
1668; 1924
1936
2050-1750 BCE
1990-95