The difference between traditional and digital photography is that you have to use light sensitive paper with a film and chemicals but with digital there is a sensor instead of film.
The different sources of digital images which take photos are :
Ipod, Phones, Camera, CCTV and Webcam.
The different sources which store photos are:
Tv, Computer, Ipod, DVD, Phones, Camera, Xbox, CCTV and Internet.
Original photo which hasn't been processed. not all software can convert or edit an item which is in RAW.
Using the jpeg format means you can save alot more photos but most of the quality is sacraficed.
Other types of format are:
Bitmap - .bmp - for use on windows
Pict - .pct - for use on mac
Tagged - .tif - high definition - best for printing photos.
Photoshop - .psd - Edit photo
Graphics - .gif - used on compuserve
Digital images are measured by pixels, 1 pixel includes 1 million pixels