Re: Gtech + speedometer error = ???

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <370E52D9.5C221030@together.net> John Cunningham writes:

> of course it does, although it's not a direct connection.  the thing
> knows you have hit 60 when you start slowing down.  if you start slowing
> down at 55mph because you think it's 60mph,  you car sure is going to
> look faster...

If it's any good, it will know you've hit sixty because it knows you
started at rest and it can integrate the acceleration to determine
speed.  This is such a basic function of intertial navigation that
you can buy chips to do it for peanuts.  It probably has a better idea
of your speed than the car does, because it won't be fooled by tyre size
errors.

--
 Phil Payne
 Phone: 0385 302803   Fax: 01536 723021
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