
Difference Engine No. 1
circa 1832
circa 1832
1775-1799 (original); 1900-1907 (model)
1849
1830 (original); 1967 (model)
circa 1842
1846
1832
1840
1835
1848
2000-100 BCE
1840
1851
1934
1850
circa 1840
1850
1834
1834
1842
1849
1842
1850
1837
1845
1845
1837
1837
1834-1844
1845
1837
1842
1841
1837
1955; 1830
1846
1837
1849
1840-1851
1840-1850
1851
1839
1849
1843
1835
1847
1841
1893-4
1851
1838