
Difference Engine No. 1
circa 1832
circa 1832
1829
1835
1838
1801-1840 (original); 1901 (model)
1839 (original); circa 1988 (replica)
1840
1837
1837
1837
circa 1840
1839
1837
1839
1955; 1830
1837
1838
1837
1834
1829
1832
1834
1834
1831
1840
1934
1837
1830
1840
1833
1831
1835
1893-4
1838
1863-7
1829
2000-100 BCE
1836
1829
1838
1837-1840
1832
1839
1840
1772 (original); 1919 (model)
1839
1839
1839
1990-96
1830