Hi,
Just for fun, I've implemented a Stopwatch function like the one on the HP-55 and the HP-41C TimeModule.
Of course, it would need a quartz to be precise but I'll see later if I can implement a calibration function.
It is a simple addon to the last firmware version and if someone is interested, I can give the calc.bin and/or the source code.
How it works:
- there is now a TIMER function in the P.FCNS menu, under TIME
- Pressing F then H then EXIT quickly enters the TIMER mode too
- once in TIMER mode, R/S starts & stops the stopwatch
- EEX toggles the 10th secs display
- ENTER stores the current value in memory. 0 to start and the increments
- arrows increment/decrement the memory used
- one can also enter the memory number directly
- the memory used is displayed in the exponent zone and -> toggles it
I plan on implementing a delta mode later, like the TimeModule one but maybe simpler.
Here is what it looks like:
Cheers