Image Characteristics

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.

Screen has over 152000 pixels in a 640 * 800 screen  

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