
Difference Engine No. 1
circa 1832
circa 1832
1835
1825-1835
1830
1775-1799 (original); 1900-1907 (model)
1829
1934
1830
1825
1826
1834
1834
1834
1832
1893-4
1863-7
1829
2000-100 BCE
1835
1829
1826
1831
1833
1831
1836
1955; 1830
1826
1990-96
1830
1831
1833
1832
1772 (original); 1919 (model)
1830-1835
1824
1829
1829
1829
1705-1737
1826
1835
1835
4000-2001 BCE
1930 (replica); 1834 (original)
1829
1828
1870-1877
1825
1826
1830 (original); 1967 (model)