How do Navigation Systems work?

Question:
a) What are the components that go into a Navigation System?

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b) How much do each of those components cost?

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c) Why are they priced so high for cars at $1500 vs. $500 for non-automotive?

Answers:

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Navigation systems (for cars) generally use data from GPS satellites to figure out your exact lattitude/longitude location, then use that in conjunction with a large array of digital road maps found in the system itself to show where you are on the roads. It's priced so high for cars because you're basically also getting a highly detailed digital database of every road map in the country, as well as the system's ability to accept directions and tell you hot to get there. A handheld or boat GPS system, on the other hand, can only tell you things like location and speed, but can't show you any roads, give you directions, etc. Hope this helps!

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