
Difference Engine No. 1
circa 1832
circa 1832
1838
1831
circa 1846
1815-1825
1839 (original); circa 1988 (replica)
1846
1705-1737
1830 (original); 1967 (model)
1990-96
1829
1837
1837
1834-1844
1837
1821-1831
1955; 1830
1842
1846
1807
1842
1808
1809
1835
1834
1829
1832
1845
circa 1805
1807
1815
1815
1842
1841
1893-4
1838
1844
1934
1837
1844
1835-1845
1863-7
1808
1807
1821
1805
1812
1805-1815
1830
1820-1840