Free Download | GPS For Dummies

As you may have guessed from the title, this book is about GPS (the satellite-based Global Positioning System) and maps; digital maps to be exact. I remember back in 1989 when Magellan introduced the first handheld GPS receiver, the NAV 1000. (Don’t worry. This isn’t going to be one of those “I used to walk 20 miles to school in the snow when I was your age,” stories.) The NAV 1000 was the size of a brick, and weighed a little less than two pounds. It was single channel receiver, could only track four satellites, and just supported latitude and longitude coordinates. It could save 100 waypoints and you could have a single route with up to 10 waypoints. It cost $2,500. Fast forward to the present.