Capturing a digital image

Today we went through everything that happens when you take a digital picture (on a phone, camera, web cam etc).  We started by having a look two people  that came up with the all important device, a CCD (charge-coupled device, see wikipedia here for a good explanation).  You don’t need to remember who invented it, but you do need to know what a CCD does.  Hopefully the slide below goes some way to explaining that.