
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1846
1834-1836
1851
1853
1849
1854
1853
1837
1837
1852
1834-1844
1837
1849
1955; 1830
1842
1830-1850
1846
1837
1831
1843
1840-1850
1826
1849
1850
1829-1851
1855
circa 1854
circa 1854
circa 1840
1839
1827-1850
1825-1835
1830-1840
1840-1851
1855
1856
1841
1838
1863-7
1850
2000-100 BCE
1850-1857
1847
1834
1829
1845-1855
1832