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