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How do digital cameras work?

Like how does the whole pixels or mega pixel thing work?(The higher the better, the lower the better???)... And what kinds of memories are there?? I am trying to get into selling electronics business so what are basic things to know about digital cameras?

Public Comments

1. go to howstuffworks.com to find out
2. Too complicated to explain here, but works on pretty much the same principles as TV Cameras / Cameras on the Hubble Space telescope / CCD imagers used by Astrophotographers. Here's some blurb that should further explain things: http://www.howstuffworks.com/digital-camera.htm http://www.bythom.com/ccds.htm http://www.washington.edu/computing/training/860/work.html http://www.howitworks.net/how-digital-cameras-work.html