
Difference Engine No. 1
circa 1832
circa 1832
1835
1825-1835
1830
1820
1775-1799 (original); 1900-1907 (model)
1821
1829
1837
1837
1893-4
1934
1830
1825
1837
1826
1834
1834
1835
1837
1820
1821-1831
1955; 1830
1834
1832
1837
1829
1826
1831
1837
1863-7
1821
1829
1816
2000-100 BCE
1833
1820-1830
1831
1836
1837
1826
1990-96
1830
circa 1821-1825
1832
1772 (original); 1919 (model)
1819
1823
1824
1830-1835