Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1834-1836
1829
1829
1839 (original); circa 1988 (replica)
1829
1775-1799 (original); 1900-1907 (model)
1831
1990-96
1838
1838
1934
1772 (original); 1919 (model)
1705-1737
1838
1833
1837
1828
1830
1825-1835
1835
2000-100 BCE
1832
4000-2001 BCE
1839
1825
1837
1826
1830
1955; 1830
1836
1870-1877
1863-7
1830
1893-4
c.1837
1830-1835
1837
1826
1830
1835
1832
1829
1826
1826
1835
1833
1860-1920
1938; (1838)