Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1815-1825
1846
1834-1836
1844
1829
1842
1821
1820
1829
1839 (original); circa 1988 (replica)
1829
1775-1799 (original); 1900-1907 (model)
1840
1831
1840
1808
1990-96
1838
1838
1934
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1819
1705-1737
1838
1844
1833
1820
1837
1828
1830
1825-1835
1821-1831
1835
1846
1815
1822
1840-1845
2000-100 BCE
1846
1832
1843
circa 1810
1813
4000-2001 BCE
1934
1839
1810-1840