
Difference Engine No. 1
circa 1832
circa 1832
1847-1848
circa 1846
1851
1835
1848
1852
1838
1839 (original); circa 1988 (replica)
1846
1849
circa 1848
1844
1801-1840 (original); 1901 (model)
1845
1851
1849
1840
1842
1850
1837
1837
1834-1844
1837
1850
circa 1840
1839
1849
1841
1837
1840-1845
1839
1842
1840-1850
1846
1830-1850
1837
1850
1838
1833
1835
1835-1845
1847
1834
1832
1834
1834
1840-1851
1845
1845