
Difference Engine No. 1
circa 1832
circa 1832
1831
1705-1737
1830 (original); 1967 (model)
1990-96
1829
1955; 1830
1829
1832
1893-4
1863-7
1830
1829
1825
2000-100 BCE
1826
1831
1826
1772 (original); 1919 (model)
1826
1830
1826
1831
1775-1799 (original); 1900-1907 (model)
1824
1823-1825
1829
1822
1829
1829
1828
1823
1825
1830
1823-1825
1826
1826
1832
4000-2001 BCE
1829
1824
1823
1830
1832
1870-1877
1936
1826
1610; 1923
1830
1668; 1924