
Difference Engine No. 1
circa 1832
circa 1832
1838
1846
1839 (original); circa 1988 (replica)
1834-1836
1851
1853
1854
1837
1837
1849
1842
1850
circa 1840
1827-1850
1830-1840
1834
1845-1855
1832
1845
1842
1856
1842
1848
1850
1837
1840
1845
1834
1834
1830-1850
1850
1851
1845
1847
1829
1840-1851
1851
1837
1830
1840
1849
1835
1855
1849
1853
1834-1844
1837
1842
1838