GPS Serial Communications
handheld GPS unit, that comes with a serial cable allowing you to interface it with a PC. Using a terminal program like Windows’ Hyperterminal or DOS’ Lynx, one can directly access the GPS to view the incoming geospatial message received from satellites orbiting Earth. Among other parameters, the message describes the unit’s position (longitude and latitude) and speed (if carried or transported in a vehicle). Using a terminal program to read the geospatial message isn’t very practical. The messages scroll too quickly to read well and they contain a lot of extraneous information.
   GPS Serial Communications
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