Joe Lau | Main / Computation Introduction

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* ComputationAlternative

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A computer does not have to run on electricity, and it does not have to be made out of silicon chips. A mechanical machine can also carry out computation. [[http://acarol.woz.org/|Here]] is an example of a calculating machine made up of lego pieces. It is modelled after the difference engine invented by Charles Babbage.

media:lego-difference.jpg

In 1994, Leonard M. Adleman used DNA molecules to carry out a very difficult computation to solve a version of the [[http://www.tsp.gatech.edu/|travelling salesman problem]].

* More details: [[http://arstechnica.com/reviews/2q00/dna/dna-1.html|DNA computation]]
* Comic illustration by Larry Gonick: [[media:dna-computer-1.gif|page 1]], [[media:dna-computer-2.gif|page 2]]

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See ComputationAlternative

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* ComputationAlternative

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!!Mental representations

media:peter-in-love.gif

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* [Recommended] [[http://www.alanturing.net/turing_archive/pages/Reference%20Articles/BriefHistofComp.html|Notes by Jack Copeland]]

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* [[http://www.alanturing.net/turing_archive/pages/Reference%20Articles/BriefHistofComp.html|Notes by Jack Copeland]]

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A computer does not have to run on electricity, and it does not have to be made out of silicon chips. A mechanical machine can also carry out computation. [[http://acarol.woz.org/|Here]] is an example of a calculating machine made up of lego pieces. It is modelled after the difference engine invented by Charles Babbage.

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* A calculating machine (a [[http://acarol.woz.org/|difference engine]]) made up of lego pieces.

[[http://~~arstechnica~~.~~com~~/~~reviews/2q00/dna/dna-1.html~~|~~DNA computation~~]]

* ~~DNA computation for solving the travelling salesman problem~~

Comic illustration by Larry Gonick: [[media:dna-computer-1.gif|page 1]], [[media:dna-computer-2.gif|page 2]]

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In 1994, Leonard M. Adleman used DNA molecules to carry out a very difficult computation to solve a version of the [[http://www.tsp.gatech.edu/|travelling salesman problem]].

* More details: [[http://arstechnica.com/reviews/2q00/dna/dna-1.html|DNA computation]]
* Comic illustration by Larry Gonick: [[media:dna-computer-1.gif|page 1]], [[media:dna-computer-2.gif|page 2]]

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!!Computations can be done with different hardware

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A calculating machine (a [[http://acarol.woz.org/|difference engine]]) made up of lego pieces.

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* A calculating machine (a [[http://acarol.woz.org/|difference engine]]) made up of lego pieces.

[[http://arstechnica.com/reviews/2q00/dna/dna-1.html|DNA computation]]

* DNA computation for solving the travelling salesman problem

Comic illustration by Larry Gonick: [[media:dna-computer-1.gif|page 1]], [[media:dna-computer-2.gif|page 2]]

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A calculating machine (a [[http://acarol.woz.org/|difference engine]]) made up of lego pieces.

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media:lego-difference.jpg

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!Readings

* Paul M. Churchland . Functionalism at Forty: A Critical Retrospective

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[-Category.Mind-]