
Difference Engine No. 1
circa 1832
circa 1832
circa 1846
1847-1848
1838
1829
1835
1837-1840
circa 1848
1846
1844
1840
1848
1834
1832
1845
1842
1893-4
1934
1830
1840
1825
2000-100 BCE
1842
1842
1837
1837
circa 1840
1837
1845
1840
1826
1845
1834
1834
1610; 1923
1825-1835
1834-1844
1837
1843
1955; 1830
1846
1835
1837
1847
1829
1826
1831
1841
1838
1846