
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1872
1860
1870
1862
circa 1871
1875
1858
1775-1799 (original); 1900-1907 (model)
1871
1830 (original); 1967 (model)
1870
1856
1857-1870
1858
2000-100 BCE
circa 1868
1870s
1875
1934
circa 1860
1866-1870
1862
1860
1863-1865
circa 1861
1860
1861
1867-1868
1861
1862
1865
1875
1955; 1830
1870-1875
1871
circa 1861
1867
1867
1876
1858
1856
1867
1865-1866
1858
1893-4
1863-7
1861-1866
1864