
Difference Engine No. 1
circa 1832
circa 1832
1801-1830
1801
1815-1825
1819
1800-1830
circa 1846
1829
1796-1798
1835
1838
1801-1840 (original); 1901 (model)
1805
1839 (original); circa 1988 (replica)
1846
1844
1821
1806
1845
1840
1842
1837
1837
1834-1844
1837
1820
1822-1840
1803-1828
circa 1840
1839
1843
1821-1831
1841
1837
1840-1845
1839
1955; 1830
1826
1808
1799
1842
1805
1796-1826
1800-1830
1796-1797
1801-1830
1846
1837
1797-1804
circa 1800