
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
circa 1871
1870
1862
1879
1872
1850-1860
circa 1846
1850-1870
1850
1860
1866-1870
1870
1858
1846
1853-1857
1847-1848
1865-1877
1845-1855
1879
1871
1862
1875
1850-1870
1850-1870
1868
1853-1857
1862
before 1857
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
circa 1848
1850
1873
1851
1870
1874
1873
1860
1850-1859
1851
1879
1850-1859
1853
1865
1867-1868
1849