OK, I admit it I went on a little about this 🙂

Here is a good post on the working of a scanner and in researching it I found that the video (below) in question was correct for colour CCDs.

[kml_flashembed movie="http://www.youtube.com/v/ZTWQbeE82HU" width="425" height="344" allowfullscreen="true" fvars="fs=1" /]

We will look at CCDs in more detail in next weeks lesson.

Here is a take apart that shows a LED scanner in more detail 🙂

[kml_flashembed movie="http://www.youtube.com/v/AuMkpaenqm8" width="425" height="344" allowfullscreen="true" fvars="fs=1" /]