
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1862
1872
1860
1866-1870
1858
1870
1871
1862
1875
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1862
before 1857
1868
1873
1870
1874
1860
1865
1867-1868
1875
1870-1875
1860
1955; 1830
1873
1858
1875
circa 1860
circa 1861
1865
1867
1867
1859
1863-1865
1856
1861
1861
1876
1858
1858
1856
1867
1865-1866
1858
1865