
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1862
1860
1877-1897
1897-1898
1839 (original); circa 1988 (replica)
1870
1885
1875
circa 1900
1872
1870
1880-1900
1874
1869
1853-1857
1879-1896
1874
1858
1889
1066; 1876
1888
1878-1879
1872
before 1889
before 1889
About 1890
1856
1875-1890
1861
1861
1860-1900
1896
1872-1880
1893-4
1934
1900
1896
1879
1880
1864-1900
2000-100 BCE
1870-1890
1861-1866
1871-1900
1875-1885
1857-1870
1851-1900
1860-1880