
Difference Engine No. 1
circa 1832
circa 1832
1835
1838
1839 (original); circa 1988 (replica)
1844
1801-1840 (original); 1901 (model)
1845
1840
1842
1837
1837
1837
circa 1840
1839
1837
1840-1845
1839
1837
1838
1833
1835
1835-1845
1834
1832
1834
1834
1845
1845
1831
1842
1844
1934
1837
1844
1830
1840
1842
1836
1843
1837
1841
1893-4
1838
1863-7
2000-100 BCE
1831
1834-1844
1841
1955; 1830
1842