
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1834-1836
1837
1837
1837
1955; 1830
1837
1831
circa 1840
1839
1838
1863-7
2000-100 BCE
1834
1832
1893-4
1934
1837
1840
1833
1831
1835
1836
1837
1840
1838
1834
1834
1839
1837
1835
1838
1839
1772 (original); 1919 (model)
1839
1831
1775-1799 (original); 1900-1907 (model)
1833
1705-1737
1837
1839-1840
1835-1840
1870-1877
1837
circa 1840
1832
1840
1930 (replica); 1834 (original)