
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1862
1872
1860
1866-1870
1870
1871
1862
1875
1862
1868
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1870
1873
1874
1860
1860
1861
1861
1934
1861-1866
circa 1868
1875
1873
circa 1860
1867
1893-4
1863-7
2000-100 BCE
1870s
circa 1861
1865-1866
1875
1863-1865
circa 1861
1865
1867
1867
1876
1865
1866
1876
1872 (original); 1909 (model)
1862
1870