
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1862
1872
1850-1860
1850-1870
1850
1860
1866-1870
1853-1857
1870
1858
1871
1850-1870
1875
1862
1850-1870
1853-1857
1868
1874
1862
before 1857
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1850
1873
1851
1870
1860
1850-1859
1851
1850-1859
1850
1850-1860
1860
1856
1861
1861
1934
1861-1866
circa 1868
1853
1865
1854
1875
1850
1858