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