GPS

[|Link] = What do i need to know to get my Gps into operation. =

= Gps: I in the 1970s U.S. Department of Defense conceived idea of the Gps out of need to accurately determine = = position of ballistic missile submarines prior launching missiles.The Gps became common for commercial use = = in the mid 1980s for surveying industry. There are many uses for the Gps and different ways to use it. =