
Difference Engine No. 1
circa 1832
circa 1832
1834
1832
1834
1834
1830
1835
1831
1955; 1830
1934
1835
1893-4
1863-7
2000-100 BCE
1833
1831
1830
1831
1830
1930 (replica); 1834 (original)
1830
1990-96
1833
1832
1830 (original); 1967 (model)
1832
1772 (original); 1919 (model)
1870-1877
1705-1737
1775-1799 (original); 1900-1907 (model)
1835
1835
4000-2001 BCE
1830-1835
1936
300 BCE; 1905-1915
1835
1833
1834
1832
1836-02
1831
1831
circa 1833
circa 1831
circa 1831
circa 1831
1899/12
1899/12
circa 1831