
Difference Engine No. 1
circa 1832
circa 1832
1838
1831
1853-1857
circa 1846
1862
1840-1851
1860
1839 (original); circa 1988 (replica)
1846
1705-1737
1847-1848
1830 (original); 1967 (model)
1860
1990-96
1829
1851
1850-1859
1853
1865
1849
1846-1859
1854
1853
1837
1837
1852
1834-1844
1837
1860
1821-1831
1849
1955; 1830
1842
1830-1850
1846
1860
1842
1862
1848
1858
1850
circa 1860
circa 1861
1835
1847
1834
1829
1845-1855
1832