
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1846
1834-1836
1851
1849
1837
1837
1852
1834-1844
1837
1849
1955; 1830
1842
1846
1837
1843
1840-1850
1849
1850
circa 1840
1839
1840-1851
1841
1838
1863-7
1850
2000-100 BCE
1847
1834
1832
1845
1842
1848-1852
1893-4
1851
1846
1844
1934
1845-1851
1837
1844
1835-1845
1851
1852
1840
1849
1833
1835