
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1820
1823
1821
1829
2000-100 BCE
1837
1833
1835
1834
1829
1834
1834
1826
1837
1826
1813
1836
1837
1820
1955; 1830
1825-1835
1837
1825
1821-1831
1837
1835
1837
1825
1832
1831
1815
1815
1815
1831
1820-1830
1893-4
1934
1837
1863-7
1821
1830
1829
1814
1816
1829
1821
1826
1832