
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1846
1834-1836
1837
1837
1849
1842
1850
circa 1840
1827-1850
1830-1840
1834
1832
1845
1842
1825
1842
1848
1850
1837
1840
1826
1845
1834
1834
1830-1850
1850
1845
1835
1847
1829
1820-1850
1893-4
1837
1863-7
1821
1830
1820-1840
1829
1840
1849
2000-100 BCE
1821-1850
1833
1820-1830
1831
1835
1836