how do a computers move metal around? it dose not make sence its silly

Question: how do a computers move metal around? it dose not make sence its silly
- Keywords:
  computer,
  computing,
  conduct,
  electric,
  electricity,
  electron,
  metal
Asked by tiggy to Chris on 10 Jun 2011.
- Chris Jordan answered on 10 Jun 2011:
  
  Robots are computers with bodies, aeroplanes get flown by a computer … there’s even one in every car. If we want to look at a star with our telescope, the computer works out where it is (they move all the time) then it turns the motors on to make the telescope point up or down and turn round until it’s pointing at a star.

Question: how do a computers move metal around? it dose not make sence its silly