|Re: Some uWatch details...|
Message #18 Posted by DaveJ on 22 Mar 2008, 3:54 a.m.,
in response to message #17 by Walter B
Thanks! I understand your wish for a primary LOG in my proposals better now. BTW you may save space by calling "LOGe" "LN". And I'd expect "e^x" nearer to "LN", not interrupted by trigs.
I know, but I only have 6 menu options on each screen, and I wanted my (personally) most often used keys on the first menu. I couldn't bear to drop 1/X, X^2, or SQRT, so that left only three.
I'll probably end up moving the parallel key to that menu, so the two might meet up after all.
Also, you seem to be a non-statistic guy (I've seen x!, nPr, nCr, but no sums, mean, std. deviation, L.R., forecasting). These tedious sample statistics were crucial reasons for me and many other students saving our scarce money for expensive calcs in the seventies. I still rate these as one of the great benefits of calcs.
Correct, I have very little use for calculator statistics in my field of electronics design.
Any stats I need to do are better done in Excel.
If stats are needed then I think they may be best taken out of the calculator menu and have their own dedicated system that allows easier entry and review of data entered etc.
2 more questions:
What's "//" ?
It's a "parallel" function, used extensively in electronics design.
Only one calculator I know of has this a primary function key, the Casio FX-61F, a calc designed specifically for electronics design.
The parallel function is actually an operator and has the same precedence as multiply and divide.
There must be a similar menu structure under "MODE". Can you unveal this, too?
Mode simply switches between the watch modes, just like normal Timex/Casio watch etc. Currently there is only Time/Date mode, calculator mode, and setup mode.
Setup mode allows you to set the date and time, calculator mode (RPN/ALG), LCD time-out, 12/24hr mode, and calibrating the clock frequency (so you can "tweak" the watch accuracy).
The mode key also wakes the calc up and switches on the LCD. Unfortunately the LCD can't be left on, as it draws a few milliamps, so that would drain the 2032 batteries in hundred hours or two.
The calc picks up exactly were it left off when it went to sleep, even if you are in the middle of a calculation.
Edited: 22 Mar 2008, 3:59 a.m.