
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
circa 1861
1862
1858
1858
1830 (original); 1967 (model)
1869
1870
1860
1861
1861
1934
1857-1870
circa 1868
1858
circa 1860
1865
1867-1868
circa 1861
1867
1867
1859
1858
1867
1865-1866
1858
1863-7
1860
1861-1866
1864
1862
1870
1893-4
2000-100 BCE
1870s
1857
1865
1857-1858
1857-1858
1858-03-02
1866
1857-1858
1955; 1830
1865
1867
1865
1934
1858
1860-1866
1870