WP 34S --> WP 31S

[Jonathan Cameron]

Hi Bruce,

(02-05-2014 06:35 PM)BruceH Wrote:  1) DEG/RAD - do people change mode enough that these need to be on keys? Can they not go under the MODES menu?

I agree. DEG/RAD could be in the MODES menu.

(02-05-2014 06:35 PM)BruceH Wrote:  Ditto HYP?

I think this should be available on a shifted key as shown.

(02-05-2014 06:35 PM)BruceH Wrote:  2) I'd like to see date arithmetic included.

Which functions? I think keeping/adding date arithmetic in the MORE menu is possible, right Walter?

(02-05-2014 06:35 PM)BruceH Wrote:  3) Why do we have A-Z? (I scanned the thread but didn't see any justification.) If it is for memories, why not use 0-9, .0-.9 to give 20 memories - more than enough.

Not only memories. Since we have a large list of functions in the MORE/MODES/etc menus, having the letter keys makes finding a specific function much faster.

(02-05-2014 06:35 PM)BruceH Wrote:  4) Stats: I don't think I have ever used slope and intercept on a calc (assuming these are s and y-hat). Can we not move these to the stats menu and have weighted mean on a key instead? Also: if you're expecting people to do any sort of regular stats work then sigma+ must be on an unshifted key. Maybe it is better to just drop stats completely on the assumption that no one does stats 'in the field' any more and will use a spreadsheet?

We had a specific request for y-hat, so I'm okay leaving on a shifted key. Y-hat lets you use the previously accumulated stat data to estimate a new Y for a given X assuming the data is best-fitted to a line (least squares).

But I agree you have a point. If we are really going to support statistics, it would be best if E+ was on a top key. What do you suggest? What replacing the [->] key with E+? I'm not 100% why we need the [->] key on this calculator (Walter?)

(02-05-2014 06:35 PM)BruceH Wrote:  5) Lastly an HP32SII-style equation solver would be an acceptable alternative to programmability. (Although I realise that this is not so much reducing 34S code as adding more!)

Not sure how that works. Anything like the 42s?

-Jonathan