
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1834-1836
1837
1837
circa 1840
circa 1800
1830-1840
1834
1832
1825
1837
1840
1826
1834
1834
1808
1808
1809
1829
circa 1805
1807
1815
1815
1810-1817
1801-1838
1837
1800
1807
1821
1805
1800
1800
1800
1812
1800
1830
1807
1812
1800
circa 1808
1807
1814
1840
1802
1816
1802
1810-1840
1810-1840