
Difference Engine No. 1
circa 1832
circa 1832
1830 (original); 1967 (model)
1838
1801-1840 (original); 1901 (model)
1831
1835
1838
1775-1799 (original); 1900-1907 (model)
1837
1668; 1924
1610; 1923
1840
1840
1837
1837
circa 1840
1841
1837
1837
1834
1832
1834
1834
1893-4
1837
1840
1836
1837
1839
1955; 1830
1642-1649 (original); 1883 (model)
1839
1838
1835
1837
1840
1841
1838
1863-7
2000-100 BCE
1833
1831
1934
1832
1772 (original); 1919 (model)
1839
1930 (replica); 1834 (original)
1831
1840
1839 (original); circa 1988 (replica)