
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1862
circa 1832
circa 1846
1870
1815-1825
circa 1871
1872
1850-1860
1858
1853-1857
1847-1848
1838
1829
1835
1862
1850-1870
1850
1860
1837-1840
1870
1870
1855
1845-1855
circa 1850s
circa 1848
1846
1849
1844
1873
1840
1831-1870
1860
1850-1859
1848
1858
1850
circa 1860
1834
1845-1855
1832
1845
1863-1865
1842
1856
1861
1861
1850-1870
1893-4