
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1862
1860
1839 (original); circa 1988 (replica)
1870
1872
1831
1870
1831
1874
1869
1846
1874
1858
1849
1847-1848
circa 1842
1853-1857
1829
1066; 1876
circa 1832
1872
1845-1855
1832
1845
1842
1856
1861
1861
1934
1830
1840
1861-1866
1857-1870
1831-1870
1835
1837
1848
1858
1850
circa 1860
1840
1826
circa 1868
1845
1833-1866
1830-1850
1850
circa 1861
1845