Difference Engine No. 1
circa 1832
circa 1832
1610; 1923
1834-1836
1829
1775-1799 (original); 1900-1907 (model)
1831
1990-96
1772 (original); 1919 (model)
1934
1705-1737
1833
1837
1828
1830
1825-1835
2000-100 BCE
1832
4000-2001 BCE
1825
1837
1830
1826
1955; 1830
1823
1836
1870-1877
1863-7
1830
1823
1893-4
c.1837
1830-1835
1837
1826
1830
1835
1832
1829
1824
1826
1823-1825
1824
1826
1835
1833
1860-1920
1834
1834
1835
1829