
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1878-1879
circa 1871
1801
1801-1830
1870
1862
circa 1832
1879
1872
1850-1860
circa 1846
1835
1866-1870
1850-1870
1850
1860
1870
1845-1855
1879
1858
1846
1853-1857
1847-1848
1865-1877
1838
1871
1850-1870
1815-1825
1862
1875
1801-1838
1850-1870
1840
1825-1835
1840-1851
1853-1857
before 1857
1868
circa 1848
1830
1839 (original); circa 1988 (replica)
1870
1820
1775-1799 (original); 1900-1907 (model)
circa 1800
1871
1850
1873