Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1815-1825
1834-1836
1829
1821
1820
1829
1839 (original); circa 1988 (replica)
1829
1775-1799 (original); 1900-1907 (model)
1831
1831
1990-96
1838
1838
1772 (original); 1919 (model)
1934
1819
1705-1737
1833
1838
1820
1828
1830
1837
1821-1831
1825-1835
1835
1815
1822
2000-100 BCE
1832
4000-2001 BCE
1813
1839
1825
1814
1837
1830
1826
1955; 1830
1815
1836
1823
1820-1830
1863-7
1870-1877
1830
1816