2. - Athens,Greece
- Approx. 325 BC
- Greece
- 5th century BC
- 3th century
- Liutprando (Europe)
- Catedral de Chartres,
Francia
- Europe
- 13th century
3. - Approx. 16th century.
- German cities: Nuremberg,Augsburg
- 1656
- patented by Christian Huygens.
-1812
-Nicolas Rieussec to measure the
distance traveled.
4. - 1955
- Dr. Essen, National Physical
Laboratory.
- 1812
- Abraham-Louis Breguet (for
Caroline Murat, Queen of
Naples.)
- 1957
- America's Hamilton Watch Company
5. -1969
-by: Seiko
- 1972
- Peter Petroff
- 1975
- Hamilton Watch Company
Quartz-Crystal
Analog Wristwatch
Digital watch
Calculator
Watch
6. - 1980
- Seiko
- develop watches with computing
ability.
- 2013
- by startup Omate with the TrueSmart
7. In general all the families have got a mobile phone for each family member and
the most common one is to be a family of 4 and have 4 mobile phones.In some
cases they´ve got more phones than people.