Image Characteristics

A pixel is the smallest controllable element on a graphic screen

Resolution : More pixels in a display/image (high resolution) mean more information and details can be shown

The relationship between the image on the screen and the bits in memory (VRAM) is called bit mapping.

Bit depth (colour depth or pixel depth) for images is the number of bits per pixel

A 640 * 800 screen has 512,000 pixels  

Each pixel is controlled by data stored in "Video RAM" or "Frame Buffer"