
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1862
1872
1850-1860
circa 1846
1850-1870
1850
1860
1866-1870
1845-1855
1846
1853-1857
1870
1858
1847-1848
1871
1850-1870
1862
1850-1870
1853-1857
1868
1874
1862
before 1857
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
circa 1848
1850
1873
1851
1870
1860
1850-1859
1851
1850-1859
1850
1850-1860
1860
1849
1845
1856
1861
1861
1934
1861-1866
1845