
Difference Engine No. 1
circa 1832
circa 1832
circa 1846
1829
1835
1838
1801-1840 (original); 1901 (model)
1839 (original); circa 1988 (replica)
1846
1844
1845
1840
1842
1837
1837
1834-1844
1837
circa 1840
1839
1843
1841
1837
1840-1845
1839
1955; 1830
1826
1842
1846
1842
1837
1838
1837
1834
1829
1832
1834
1834
1845
1845
1826
1831
1842
1840
1846
1844
1934
1837
1844
1830
1840
1825