
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1819
1829
1835
1838
1821
1837
1837
1837
1820
1821-1831
1837
1826
1808
1837
1838
1833
1835
1829
1808
1809
circa 1810
1834
1829
1832
1834
1834
1812
1826
1831
1807
1815
1815
1810-1817
1934
1837
1807
1821
1812
1830
1807
1812
circa 1808
1807
1814
1816
1825
1836
1825-1835