Types of Graphics

"There are two types of computer graphics: raster graphics, where each pixel is separately defined (as in a digital photograph), and vector graphics, where mathematical formulas are used to draw lines and shapes, which are then interpreted at the viewer's end to produce the graphic."

Raster Graphics are digital images made 

of rectangular pixels, or squares of color.

The file size and quality depend on the number of bits per pixel.

Vector Graphics are based on shapes, lines, and control points,

and are based on mathematical expressions rather than individual

pixels.

This allows vector graphics to be resized with minimal effects on file size

and image clarity