
Difference Engine No. 1
circa 1832
circa 1832
1815-1825
1820
1821
1819
1835
1831
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
1829
1820
1821-1831
1835
1955; 1830
1826
1863-7
1829
1833
1831
1815
1834
1829
1832
1831
1815
1815
1893-4
1934
1821
1830
1816
1825
2000-100 BCE
1820-1830
1826
1834
1834
1825-1835
circa 1821-1825
1832
1826
1990-96
1823
1824
1815-1825
1830
1830-1835
1830
1826
1824