
Difference Engine No. 1
circa 1832
circa 1832
1870
circa 1846
1847-1848
1846
1668; 1924
1862
1860
1835
1870
1849
1850-1860
1838
1830 (original); 1967 (model)
1844
1853-1857
1839 (original); circa 1988 (replica)
1858
circa 1842
1866
1845-1855
1862
1845-1855
1840
1862-1863
1845-1855
1862-1863
1831-1870
1860
1850-1856
1850-1859
1845
1851
1835-1870
1850-1859
1853
1865
1849
1846-1859
1854
1840
1842
1850
1837
1837
1852
1870
1831-1870
1842
circa 1854