
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1820
1821
1838
1819
1835
1831
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1829
1813-1814
1837
1837
1837
1820
1839
1821-1831
1835
1955; 1830
1837
1826
1838
1863-7
1829
1833
1831
1836
1839
1815
1834
1829
1832
1831
1815
1815
1893-4
1934
1837
1821
1830
1814
1816
1825
2000-100 BCE
1813
1820-1830
1837
1837