
Difference Engine No. 1
circa 1832
circa 1832
1870
1847-1848
1819
circa 1846
1851
1829
1860
1852
1862
1848
1835
1870
1853-1857
1838
1850-1860
1858
1801-1840 (original); 1901 (model)
1839 (original); circa 1988 (replica)
1846
1849
circa 1848
1844
1853-1857
1845-1855
1821
1862
1862-1863
1831-1870
1850-1856
1850-1859
1845
1851
1850-1859
1853
1865
1867-1868
1849
1855
1846-1859
1854
1840
1842
1853
1850
1837
1837
1870
1834-1844
1837