
Difference Engine No. 1
circa 1832
circa 1832
1838
circa 1846
1847-1848
1851
1835
1831
1846
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1844
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1829
1840
1853
1849
1853
1837
1837
1834-1844
1837
1822-1840
1850
circa 1840
1839
1849
1842
1840-1850
1827-1850
1822-1850
1846
1842
1848
1850
1835
1852
1843
1955; 1830
1829-1851
1849
1830-1850
1837
1826
1848-1852
1841
1851
1838
1835-1845
1863-7