Remote controls use an infrared ray to tell its machine to do something like changing a channel on a T.V. This might look like it might take forever but it takes less than a second. Remotes are now being used on many things, like CD players, VCRs, and in computer technology. You can see the electronic components below. Here is a good link on How It Works: Remote Controls. If you would like to see Beakman's World explain the use of a remote control click here (you will need the Macromedia Shockwave Plug-in).