Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1815-1825
1829
1821
1820
1829
1775-1799 (original); 1900-1907 (model)
1829
1831
1831
1833
1772 (original); 1919 (model)
1705-1737
1819
1820
1828
1830
1821-1831
1822
2000-100 BCE
1815
4000-2001 BCE
1832
circa 1810
1825
1813
1814
1830
1826
circa 1810
1955; 1830
1815
1823
1863-7
1820-1830
1870-1877
1830
1812
1816
1823
1821
1813
1893-4
circa 1820
1829
1814
1815
1821
1812