
Difference Engine No. 1
circa 1832
circa 1832
1838
1831
1705-1737
1830 (original); 1967 (model)
1990-96
1829
1837
1837
1837
1955; 1830
1835
1834
1829
1832
1893-4
1838
1934
1837
1863-7
1830
1829
2000-100 BCE
1833
1835
1836
1837
1826
1838
1834
1834
1837
1837
1831
1826
1838
1772 (original); 1919 (model)
1826
1830
1826
1831
1775-1799 (original); 1900-1907 (model)
1833
1829
1829
1829
1837
1835
1828
1837