
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1820
1819
circa 1846
1821
1838
1835
1831
1846
1844
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1829
1840
1813-1814
1837
1837
1834-1844
1837
1820
1822-1840
circa 1840
1839
1843
1821-1831
1955; 1830
1808
1842
1846
1807
1842
1808
1809
1835
1837
1847
1834
1829
1832
1845
1826
1831
1807
1815
1815
1842
1810-1817