Analytical engine: Difference between revisions

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Correct image caption: it's Babbage's son's 'Analytical Engine Mill' of 1910, not a modern model of Babbage's complete mill.
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Late in his life, Babbage sought ways to build a simplified version of the machine, and assembled a small part of it before his death in 1871.<ref name="meccano" /> But in 1878, a committee of the [[British Association for the Advancement of Science]] recommended against constructing the analytical engine, which sank Babbage's efforts for government funding.{{Clarifyme|date=September 2008}}<!-- dates wrong? How could Babbage make efforts 17&nbsp;years after his death? -->
 
In 1910, Babbage's son Henry Prevost Babbage reported that a part of the mill and the printing apparatus had been constructed and had been used to calculate a (faulty) list of multiples of [[pi]]. This constituted only a small part of the whole engine; it was not programmable and had no storage. (Popular images of this section have sometimes been mislabelled, implying that it was the entire mill or even the entire engine.) Henry Babbage's "Analytical Engine Mill" is on display at the Science Museum in London<ref name="mill">[http://www.sciencemuseum.org.uk/objects/computing_and_data_processing/1896-58.aspx ''Henry Babbage's Analytical Engine Mill, 1910''] Science Museum, London</ref>[[Image:Analytical Engine (2290032530).jpg|thumb|right|200px|Henry Babbage's Analytical Engine Mill, built in 1910<ref name="mill" />, in the [[Science Museum (London)]]]]
In 1910, Babbage's son Henry Prevost Babbage reported that a part of the mill and the printing apparatus had been constructed
and had been used to calculate a (faulty) list of multiples of [[pi]]. This constituted only a small part of the whole engine; it was not programmable and had no storage. (Popular images of this section have sometimes been mislabelled, implying that it was the entire mill or even the entire engine.) Henry Babbage's "Analytical Engine Mill" is on display at the Science Museum in London<ref name="mill">[http://www.sciencemuseum.org.uk/objects/computing_and_data_processing/1896-58.aspx ''Henry Babbage's Analytical Engine Mill, 1910''] Science Museum, London</ref>[[Image:Analytical Engine (2290032530).jpg|thumb|right|200px|Henry Babbage's Analytical Engine Mill, built in 1910<ref name="mill" />, in the [[Science Museum (London)]]]]
 
Henry also proposed building a demonstration version of the full engine, with a smaller storage capacity: "perhaps for a first machine ten[columns] would do, with fifteen wheels in each".<ref name="fourmilab">[http://www.fourmilab.ch/babbage/hpb.html ''The Analytical engine''] By Major-General H. P. Babbage - From the Proceedings of the British Association, 1888;