
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
1862
1870
circa 1871
1872
1862
1860
1870
1870
1873
1860
circa 1860
1863-1865
1861
1861
1893-4
1934
2000-100 BCE
1861-1866
1864
1870s
1871
1860
circa 1868
1610; 1923
circa 1861
1865
1867-1868
1955; 1830
circa 1861
1865
1867
1867
1867
1865-1866
1865
1866
1863-7
1872 (original); 1909 (model)
1862
1870
1866-1870
1867
1872
1873
1990-96
1862
1860
1860-1870