
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
circa 1871
1853-1857
1862
1860
1839 (original); circa 1988 (replica)
1705-1737
1830 (original); 1967 (model)
1871
1860
1990-96
1853
1865
1867-1868
1854
1853
1860
1955; 1830
1860
1862
1858
circa 1860
circa 1861
1865
1867
1867
1859
1856
1861
1861
1858
1855
1856
1867
1865-1866
1858
1893-4
1934
1863-7
2000-100 BCE
1861-1866
1864
1857-1870
1862
1855
1870
circa 1868
1854
1857