
Difference Engine No. 1
circa 1832
circa 1832
1801
1801-1830
1815-1825
1800-1830
1819
1829
1835
1838
1805
1839 (original); circa 1988 (replica)
1821
1801-1840 (original); 1901 (model)
1806
1840
1837
1837
1837
1820
1822-1840
1803-1828
circa 1840
1839
1821-1831
1841
1837
1839
1826
1808
1805
1800-1830
1837
circa 1800
1838
1833
1835
1829
1810-1840
1810-1840
1808
1809
circa 1810
1834
1829
1832
1834
1834
circa 1805
1812
1826