Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1830 (original); 1967 (model)
1829
1820
1821
1829
1829
1775-1799 (original); 1900-1907 (model)
1831
1831
1990-96
1772 (original); 1919 (model)
1705-1737
1820
1833
1830
1828
1821-1831
1822
2000-100 BCE
1832
4000-2001 BCE
1825
1830
1826
1955; 1830
1823
1820-1830
1870-1877
1863-7
1830
1823
1893-4
1821
1829
1821
circa 1820
1826
1830
1821
1829
1824
1832
1820
1826
1823-1825
1824
1826
1833