
Difference Engine No. 1
circa 1832
circa 1832
1838
1835
1838
1829
1836
1825-1835
1837
1837
1837
1837
1838
1835
1837
1834
1829
1832
1834
1834
1826
1831
1955; 1830
1826
1893-4
1934
1837
1830
1825
1837
2000-100 BCE
1833
1831
1863-7
1829
1829
1838
1832
1772 (original); 1919 (model)
1826
1990-96
1823
1824
1830
1830-1835
1830
1826
1831
1830 (original); 1967 (model)
1824
1833