
Difference Engine No. 1
circa 1832
circa 1832
1847-1848
1853-1857
1838
1830 (original); 1967 (model)
1829
1842
1851
1853
1854
1837
1837
circa 1854
1850
circa 1854
circa 1840
1849
1842
1840-1850
1857
1841
1835
1837
1847
1829
1840-1851
1831
1855
1856
1848-1852
1858
1841
1851
1838
1846
1844
1857-1858
1845-1851
1857-1858
1837
1844
1857-1858
1850
1851
1852
1830
1840
1849
1833
1831