
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1838
1829
1835
1837-1840
1844
1840
1834
1832
1842
1893-4
1934
1830
1840
1825
2000-100 BCE
1820-1830
1842
1842
1837
1837
1822-1840
circa 1840
1837
1840
1826
1834
1834
1610; 1923
1825-1835
1834-1844
1837
1820
1843
1821-1831
1955; 1830
1835
1837
1829
1826
1831
1815
1815
1841
1838
1844
1837
1844
1863-7