Although it had many uses outside of Political Geography, the most significant technological development of the late 20th century in this area resonated particularly with geographers.
Geocoded data is captured, stored, checked, integrated, manipulated, displayed, and analyzed using geographic information systems (GIS), which combine hardware and software. These systems accept data input and show it as two- or three-dimensional maps and other diagrammatic formats (i.e., information with coordinate referencing, such as latitude and longitude). Even if two or more maps were created using distinct spatial grids, they can be combined for analysis by being overlay, for example, a relief map and a map of wells.
Although it had many uses outside of geography, the most significant technological development of the late 20th century in this area resonated particularly with geographers.
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