
Difference Engine No. 1
circa 1832
circa 1832
1838
1829
1835
1837-1840
1840
1834
1832
1893-4
1934
1830
1840
1825
2000-100 BCE
1837
1837
circa 1840
1837
1840
1826
1834
1834
1610; 1923
1825-1835
1837
1955; 1830
1835
1837
1829
1826
1831
1838
1837
1863-7
1829
1833
1831
1836
1837
1839
1838
1839
1838
1826
1839
1839
1990-96
1830
1832
1839