
Difference Engine No. 1
circa 1832
circa 1832
1829
1838
1830 (original); 1967 (model)
1835
1837
1837
1844
1840
1821
1820
1838
1839 (original); circa 1988 (replica)
1838
1844
1829
1831
1829
1775-1799 (original); 1900-1907 (model)
1642-1649 (original); 1883 (model)
1668; 1924
1836 - 1917
1831
1837
1840
1828 - 1947
1990-96
1610; 1923
1830
1825
1772 (original); 1919 (model)
2000-100 BCE
circa 1842
1823-1825
1822
1827 - 1912
1840
1825-1835
1838
1821-1831
1820
1990-95
1934
1843
1832
1828
1838 - 1907
1822 - 1895
1835
1831