WP-34S: Stopwatch - bug, feature, or user error?

[Marcus von Cube]

(05-09-2014 09:02 PM)Brad Barton Wrote:  Would it be possible to set a flag if the stop watch is running, and store the difference between stop watch value and the internal clock when the idle timer puts the machine to sleep?

The problem is that in deep sleep the processor is shut off and so are the interrupts. The only reliable time source during deep sleep is the RTC with a resolution of a second. I'd say: forget saving battery and just disable the shutdown while the stopwatch is active. The battery consumption shouldn't be excessive anyway because the stopwatch doesn't need a lot of processing power.