
Difference Engine No. 1
circa 1832
circa 1832
1838
1839 (original); circa 1988 (replica)
1834-1836
1837
1837
1837
1820
1821-1831
1955; 1830
1835
1837
1834
1829
1832
1826
1831
1893-4
1838
1934
1837
1863-7
1821
1830
1829
1816
1825
2000-100 BCE
1833
1820-1830
1831
1835
1836
1837
1826
1838
1834
1834
1825-1835
1839
1839
1837
circa 1821-1825
1838
1832
1839
1772 (original); 1919 (model)
1826
1819
1839