Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1847-1848
1846
1834-1836
1849
1844
1842
1840-1851
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
circa 1848
1850
1840
1851
1848
1840
1990-96
1838
1838
1772 (original); 1919 (model)
1934
1801-1840 (original); 1901 (model)
1705-1737
1833
1838
1851
1844
1851
1837
1835
1846
circa 1850s
1840-1845
2000-100 BCE
1846
1832
1843
1840-1850
4000-2001 BCE
1839
1934
1845
1837
circa 1840
circa 1840
1849
1955; 1830
1850
1840