
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
circa 1871
1870
1862
1879
1872
1866-1870
1879
1870
1865-1877
1871
1875
1862
1868
1874
1862
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1873
1870
1879
1877
1878
circa 1880
1861
1861
1872-1880
1934
1879
1861-1866
1882
circa 1868
1865
1875
1870-1880
1875
1867
1867
1876
1878
1865-1866
1865
1866
1875
1870
circa 1861
1863-1865