Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
circa 1846
1846
1834-1836
1830 (original); 1967 (model)
1844
1842
1829
1821
1820
1829
1829
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1831
1840
1831
1837
1840
1838
1990-96
1801-1840 (original); 1901 (model)
1844
1934
1772 (original); 1919 (model)
1838
1838
1705-1737
1820
1833
1837
1828
1825-1835
1846
1830
1821-1831
1822
1840-1845
1843
1846
1934
2000-100 BCE
1832
1839
1845
1825
4000-2001 BCE
1837
1826