
Difference Engine No. 1
circa 1832
circa 1832
circa 1846
1829
1835
1838
1801-1840 (original); 1901 (model)
1839 (original); circa 1988 (replica)
1846
1844
1821
1845
1840
1842
1837
1837
1834-1844
1837
1820
1822-1840
circa 1840
1839
1843
1821-1831
1841
1837
1840-1845
1839
1955; 1830
1826
1842
1846
1837
1838
1833
1831
1835
1825-1835
1841
1893-4
1838
1835-1845
1863-7
1829
2000-100 BCE
1820-1830
1836
1842
1837
1847
1834