
Difference Engine No. 1
circa 1832
circa 1832
1775
1838
1860
1771-1830
1788
1858
1839 (original); circa 1988 (replica)
1846
1770
1870
1791
1834-1836
1851
1850-1859
1853
1854
1837
1794
1837
1860
1849
1842
1860
1850
circa 1840
1850-1859
1863-1865
1827-1850
circa 1800
1830-1840
1834
1845-1855
1832
1845
1798
1842
1856
1861
1861
1797
1825
1771-1800
1831-1870
1842
1790-1819
1790-1819
1790-1819
1790-1819
1790-1819