How do digital compass watches work?

here is the answer: http://mathforum.org/library/drmath/view/61130.html

If you have read How Pendulum Clocks Work, you know that all clocks (regardless of technology) have a few required components: A source of power to run the clock In a pendulum clock, the weights or...

compasses work on the magnetic pull of the north and south poles to always point north and whatever direction you look at it points to that letter.

it always points north

the compass will always point north okay (