
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1820
1819
1821
1838
1835
1831
1775-1799 (original); 1900-1907 (model)
1830 (original); 1967 (model)
1829
1813-1814
1837
1837
1837
1820
1821-1831
1955; 1830
1808
1807
1808
1809
1835
1837
1834
1829
1832
1826
1831
1807
1815
1815
1810-1817
1893-4
1838
1934
1837
1863-7
1808
1807
1821
1812
1830
1807
1812
circa 1808
1829
1807
1814
1816