Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1847-1848
1846
1834-1836
1849
1844
1842
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1840
circa 1848
1831
1848
1840
1831
1833
1838
1772 (original); 1919 (model)
1934
1838
1801-1840 (original); 1901 (model)
1705-1737
1844
1838
1835
1830
1837
1846
1846
1840-1845
2000-100 BCE
4000-2001 BCE
1843
1832
circa 1840
1839
1934
1830
1845
1837
circa 1840
1849
1955; 1830
1840
1836
1844
1863-7
1870-1877
c.1837