[time-nuts] iPhone keeping better time?

David J Taylor david-taylor at blueyonder.co.uk
Thu Nov 17 01:11:52 EST 2011

>> Chris, I can see your point, but these devices must have a CPU running 
>> all
>> the time, otherwise how would the soft power-up work?
> The ARM processor has a power manager that wakes the CPU and powers it
> up when events like a WiFi packet comes in or there is some input by
> the user.   The CPU is not left running.   watching for these kind of
> evens is done by a much smaller chip
> Chris Albertson
> Redondo Beach, California

Thanks, Chris.  That's why I wrote "a CPU" rather than "the CPU".

SatSignal software - quality software written to your requirements
Web:  http://www.satsignal.eu
Email:  david-taylor at blueyonder.co.uk 

More information about the time-nuts mailing list