Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1834-1836
1844
1829
1842
1821
1820
1829
1829
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1840
1831
1840
1831
1990-96
1833
1838
1934
1838
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1705-1737
1844
1819
1838
1820
1828
1835
1830
1837
1821-1831
1825-1835
1840-1845
1822
2000-100 BCE
1843
1832
4000-2001 BCE
circa 1840
1825
1839
1845
1830
1837
1826
1820-1840
circa 1840
1955; 1830