
Difference Engine No. 1
circa 1832
circa 1832
circa 1800
1832
1825
1826
1808
1808
1809
1829
circa 1805
1807
1815
1815
1810-1817
1800
1807
1821
1805
1800
1800
1800
1812
1800
1830
1807
1812
1800
circa 1808
1807
1814
1802
1816
1802
1821-1831
1815-1825
1806
1805
1831
1803-1828
1820
1800-1830
1955; 1830
1807
1801-1823
1812
1826
1801-1830
1802
1815
1893-4