
Difference Engine No. 1
circa 1832
circa 1832
1838
1801-1840 (original); 1901 (model)
1829
2000-100 BCE
1840
1842
1837
1837
1833
circa 1840
1841
1842
1842
1837
1835
1834
1829
1832
1834
1834
1842
1841
1838
1934
1837
1863-7
1836
1837
1839
1843
1839
1955; 1830
1838
1835
1837
1831
1837
1831
1840
1893-4
1829
1842
1841
1838
1837-1840
1839
1839
1990-96
1832