
Difference Engine No. 1
circa 1832
circa 1832
1860
1853-1857
1862
1852
1858
1775-1799 (original); 1900-1907 (model)
1853-1857
1831
1849
1830 (original); 1967 (model)
circa 1842
1846
1854
1845-1855
1832
1856
1840
1835
1848
1858
2000-100 BCE
1840
1851
1934
circa 1860
1850-1859
1850
1855
1862
circa 1854
1850-1859
circa 1840
1860
1850-1860
1863-1865
1853
1850
1834
circa 1861
1834
1842
1849
1860
1861
1861
1842
1850
1837
1845