
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1862
1872
1860
1866-1870
1870
1858
1871
1862
1875
1862
before 1857
1868
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1870
1873
1874
1860
1860
1856
1861
1861
1934
1861-1866
circa 1868
1858
1875
1873
circa 1860
1867
1855-1860
1893-4
1863-7
2000-100 BCE
1870s
1857-1870
1855-1870
circa 1861
1858
1858
1865-1866
1858-03-02
1875
1863-1865
circa 1861