
Difference Engine No. 1
circa 1832
circa 1832
1829
1835
1838
1839 (original); circa 1988 (replica)
1837
1837
1837
1839
1837
1839
1837
1838
1833
1835
1829
1834
1829
1832
1834
1834
1831
1934
1837
1830
1836
1955; 1830
1837
1893-4
1838
1863-7
2000-100 BCE
1831
1829
1838
1832
1839
1839
1839
1839
1990-96
1830
1830-1835
1830 (original); 1967 (model)
1830
1775-1799 (original); 1900-1907 (model)
1831
1833
1930 (replica); 1834 (original)
1829