Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1847-1848
1834-1836
1844
1849
1829
1842
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
circa 1848
1840
1848
1831
1840
1990-96
1838
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1934
1705-1737
1838
1844
1833
1837
1828
1830
1825-1835
1846
1840-1845
2000-100 BCE
1846
1843
1832
4000-2001 BCE
1934
1839
1845
1825
1837
circa 1840
1830
1826
1849
1955; 1830
1840
1836
circa 1840
1870-1877
1844