
Difference Engine No. 1
circa 1832
circa 1832
1838
1829
1835
1834
1832
1830
1837
1837
1821-1831
1835
1829
1837
1829
1837
1826
1834
1834
1934
1893-4
1863-7
2000-100 BCE
1820-1830
1825-1835
1825
1837
1820
1955; 1830
1837
1826
1831
1838
1821
1833
1831
1836
1838
1837
1610; 1923
1826
circa 1821-1825
1775-1799 (original); 1900-1907 (model)
1830
1820
1829
1930 (replica); 1834 (original)
1821
1833
1830
1826