Refrences

http://www.bbc.co.uk/schools/gcsebitesize/dida/graphics/bitmapvectorrev1.shtml

http://graphicssoft.about.com/od/aboutgraphics/a/bitmapvector_2.htm

http://en.wikipedia.org/wiki/Bitmap

http://www.bbc.co.uk/schools/gcsebitesize/dida/using_ict/presenting_informationrev5.shtml

http://www.tutorial9.net/tutorials/photoshop-tutorials/saving-images-for-the-web/

http://www.sphoto.com/homedd/