
Difference Engine No. 1
circa 1832
circa 1832
circa 1846
1838
1829
1835
1837-1840
1846
1844
1840
1834
1832
1845
1842
1893-4
1830
1840
1825
2000-100 BCE
1820-1830
1842
1842
1837
1837
1822-1840
circa 1840
1837
1845
1840
1826
1845
1834
1834
1610; 1923
1825-1835
1841
1838
1846
1844
1934
1844
1835-1845
1820-1840
1833
1831
1836
1842
1839
1838
1841
1839