2. The second was the
gyrocator It was
computerise.
In 1988 they created
a digital road map
• The first sat nav
was the Jones live-
map
• It was an archaic
way to measure
distance and
direction through
a cable conected to
the front wheels.

3. • A sat nav is a machine that can tell you
which way you need to go by using
information received from a satellite

4. WHERE CAN WE FIND IT?
1. In a car
2. In mobile phones
3. In an ipod touch
WHAT FOR DO WE USE
IT?
We use it to travel to places
that we don’t know how
to go
HOW DO WE USE IT?
To use it you insert the
localization of the place
you want to go and the
sat nav will show you a
map with the direction
you have to go

5. 1) SAT NAV was invented after a disaster
in which two aeroplanes crashed
because they got lost in the middle of
the sky
2) It was invented for the military force
3) More than 30 sat nav satellites are
orbiting around the Earth
4) To get the exact location, the sat nav
uses information from 4 different
satellites