
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1862
1870
circa 1871
1872
1850-1860
1858
1853-1857
1862
1850-1870
1850
1860
1870
1870
1855
circa 1850s
1860
1850-1859
1858
1850
circa 1860
1863-1865
1856
1861
1861
1850-1870
1893-4
1934
2000-100 BCE
1861-1866
1864
1870s
1857-1870
1871
1855-1870
1851
1850-1859
1853
1854
circa 1854
1850
circa 1854
1850-1860
1860
circa 1868
1610; 1923
1850
circa 1861
1865