
Difference Engine No. 1
circa 1832
circa 1832
1847-1848
1815-1825
1819
circa 1846
1851
1829
1852
1848
1835
1838
1801-1840 (original); 1901 (model)
1839 (original); circa 1988 (replica)
1846
1849
circa 1848
1844
1821
1806
1845
1851
1849
1840
1842
1850
1837
1837
1834-1844
1837
1820
1822-1840
1850
circa 1840
1839
1843
1821-1831
1849
1841
1837
1840-1845
1839
1955; 1830
1826
1808
1842
1829-1851
1849
1840-1850
1830-1850
1827-1850