How do maps made using geographic information system make use of computer technology

Geographic information may include the area of land or a body of water. It may also include the shape of the islands and their relative location with the surroundings. Eventually, this information should be translated into a visual chart called a map. It would use computer technology in the sense of drawing them and adding legends. Finally, you would need computers to print them out in large volumes.

Cause of he different elevations  hope this ?