
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
circa 1871
1870
1862
1860
1866-1870
1870
1871
1862
1868
1839 (original); circa 1988 (replica)
1870
1775-1799 (original); 1900-1907 (model)
1871
1862
1860
1860
1861
1861
1893-4
1934
1861-1866
circa 1868
1865
1867-1868
1955; 1830
circa 1860
1865
1867
1867
1867
1865-1866
1865
1866
1863-7
2000-100 BCE
1864
1870s
1862
1870
circa 1861
1863-1865
circa 1861
1990-96
1867
1860
1860-1870
1865
1860
1772 (original); 1919 (model)