
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1838
1830 (original); 1967 (model)
1829
1837
1837
circa 1840
1808
1809
1835
1837
1829
circa 1805
1826
1831
1807
1815
1815
1810-1817
1838
1837
1808
1807
1821
1805
1830
1820-1840
1807
1812
circa 1808
1807
1814
1840
1816
1833
1820-1830
1831
1836
1838
1812
circa 1810
1815
1806
1837
1822-1840
1821-1831
1955; 1830
1805
1807