GIS stands for Geographical information system. The technology behind GIS is GPS (Global Position System). The software's used for GIS mapping & linking are Arc Info & Arc view. It is used for scientific investigation, resource management, development planning, emergency response planning & simulating environmental effects etc. In the strictest sense a GIS is a computer system capable of assembling, storing, manipulating & display geographically reference information according to their locations, which involves GPS survey work.
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