
Difference Engine No. 1
circa 1832
circa 1832
1829
1835
1838
1839 (original); circa 1988 (replica)
1801-1840 (original); 1901 (model)
1840
1837
1837
1837
1822-1840
circa 1840
1839
1837
1839
1826
1837
1838
1833
1835
1829
1834
1829
1832
1834
1834
1826
1831
1840
1934
1837
1830
1840
1825
1836
1825-1835
1955; 1830
1837
1893-4
1838
1863-7
2000-100 BCE
1831
1829
1838
1837-1840
1832
1839
1826
1839