
Difference Engine No. 1
circa 1832
circa 1832
1846
1838
1850
1835
1838
circa 1846
1847-1848
1829
1836
1825-1835
1845
1849
1840
1842
1850
1837
1837
1834-1844
1837
1850
circa 1840
1839
1843
1849
1841
1837
1840-1845
1839
1850
1838
1835
1837
1847
1834
1829
1832
1834
1834
1845
1845
1826
1831
1842
1955; 1830
1826
1842
1849
1840-1850
1830-1850