
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1846
1834-1836
1851
1853
1854
1837
1837
1849
1842
1850
circa 1840
1827-1850
1830-1840
1834
1845-1855
1832
1845
1842
1856
1825
1842
1848
1850
1837
1840
1826
1845
1834
1834
1830-1850
1850
1851
1845
1847
1829
1840-1851
1815
1815
1851
1837
1821
1830
1814
1840
1849
1816
1820-1855