
Difference Engine No. 1
circa 1832
circa 1832
circa 1846
1847-1848
1846
1829
1668; 1924
1829-1851
1829
1860
1835
1825-1835
1849
1850-1860
1838
1830 (original); 1967 (model)
1821
1844
1853-1857
1839 (original); circa 1988 (replica)
1858
circa 1842
1845-1855
1845-1855
1840
1845-1855
1860
1850-1856
1850-1859
1845
1851
1850-1859
1853
1849
1855
1846-1859
1854
1840
1842
1850
1837
1837
1852
1810-1840
1842
1810-1840
1822-1840
circa 1854
1850
1825
circa 1840