
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1834-1836
1837
1837
1842
circa 1840
1830-1840
1834
1832
1842
1825
1842
1837
1840
1826
1834
1834
1808
1808
1809
1835
1829
circa 1805
1807
1815
1815
1810-1817
1893-4
1837
1863-7
1808
1807
1821
1805
1812
1805-1815
1830
1820-1840
1807
1812
circa 1808
1829
1807
1814
1840
1816
2000-100 BCE
1813