HP Prime micro sd

06112017, 09:41 PM
Post: #15




RE: HP Prime micro sd
(06092017 12:09 PM)toml_12953 Wrote:See also: http://www.hpmuseum.org/forum/thread4792.html(06092017 11:12 AM)matthiaspaul Wrote: * selectable much larger display fontsI'm not that old yet but we should have many more fonts and sizes available in any case (no pun intended!) (06092017 12:09 PM)toml_12953 Wrote:Sure, I didn't mean to put away with HPPL.(06092017 11:12 AM)matthiaspaul Wrote: * userRPLAs long as HPPL is still available! (06092017 12:09 PM)toml_12953 Wrote:I consider turns to be some kind of "missing piece" among degrees, gons and radians. Each of these modes can be substituted by another to some extent, yet one mode is more convenient to use than another depending on the application.(06092017 11:12 AM)matthiaspaul Wrote: * direct support for turns (360° = 2*pi rad = 400 gon = 1 turn) as a fourth angular mode (not only as a unit) in addition to degrees/radians/gonsWho uses turns? If they're used by a large number of people then it would be worth it. If the number of users is relatively small, then no. It doesn't seem like using grads (gons) and dividing or multiplying by 400 to convert back and forth as necessary is too much trouble. While turn is an established angular unit, it certainly isn't in mainstream use. I'm sure more people would start using it if it were readily available as a mode on calculators. So far, they are using turns implicitly. I implemented a turns mode in a software calculator I wrote decades ago, and I found it quite useful  that's why I propose this to be implemented in other calculators as well. In engineering I regularly find myself converting angular values to some internal representation and back. For this, the value gets normalized by dividing it by 2*pi, 360 or 400, then it is multiplied by some factor (say 256, if it needs to be stored in a byte). This can be shortened if the normalization could be skipped (by working in turns instead of one of the other three modes) or if the normalization could at least be simplified (using a set of builtin conversion functions or relying on implicit conversions alongside angular mode switches). (Of course, it would be even easier, if one could work in target units right from the start, but this very much depends on the actual problem to be solved. One user might need binary radians where a full circle is 256 brads, another might prefer an angular mil mode where full circle corresponds with either 6000, 6283, 6300, or 6400 amils  I can think of at least a dozen other more or less useful units as well. Since not all of them can be implemented in a calculator mode realistically, I suggest to at least implement one "neutral" one which can be converted into the other ones easily  turns. Even more flexible would be an angular mode with a userdefinable factor, set to 1 for turns by default.) I also think that a turns mode could have some educational value when discussing circles and trigonometric functions in math education. I have seen pupils who had difficulties trying to understand the significance of values like 360 or 400. Things might be easier to understand for them using 1 instead. After all, 1 turn nicely corresponds with 100 percent as well. See also: http://www.hpmuseum.org/forum/thread542...l#pid48945 (06092017 12:09 PM)toml_12953 Wrote:I see that my statement wasn't clear. I want both, of course. Bnotation should be accepted by the system whereever Enotation is supported already, and doublepressing the EEX key in direct number entry could be a shortcut in the UI frontend to input the B (like: first press of EEX displays ...E_ (with _ symbolizing the cursor), a second press of EEX would change this to ...B_ and so on).(06092017 11:12 AM)matthiaspaul Wrote: * (even in decimal mode) optional number entry in binary Enotation (on doublepress of EE or by using "B" for *2^ instead of "E" for *10^) and toggle display (single press of button) between decimal and binary scientific / engineering notation for easy adhoc conversion between SI and IEC prefixes (not only as unit prefixes, but for any displayed numbers)Yes! (I'd want the B rather than double press of EE.) Some other hotkey would be needed for the +/ exponent shifting feature and for the decimal/binary exponent display toggle, and depending on if this would be (somehow) bound to the EEX key as well or if a separate ENG key (as on Casios) would be available, the best implementation very much depends on the target calculator. See also: http://www.hpmuseum.org/forum/thread464...l#pid58908 (06092017 12:09 PM)toml_12953 Wrote:(06092017 11:12 AM)matthiaspaul Wrote: * exponent shifting in scientific notation (+/1) as well as in decimal (+/3) and binary (+/10) engineering notationYes! (06092017 12:09 PM)toml_12953 Wrote:See also:(06092017 11:12 AM)matthiaspaul Wrote: * full set of trigonometric / hyperbolic functions (as suggested in old thread)Yes! http://www.hpmuseum.org/forum/thread542...l#pid49015 http://www.hpmuseum.org/forum/thread4750.html (06092017 12:09 PM)toml_12953 Wrote:See:(06092017 11:12 AM)matthiaspaul Wrote: * more detailrefined UI (as suggested in old thread)How so? http://www.hpmuseum.org/forum/thread463...l#pid41607 http://www.hpmuseum.org/forum/thread4667.html http://www.hpmuseum.org/forum/thread4750.html Greetings, Matthias  "Programs are poems for computers." 

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Messages In This Thread 
HP Prime micro sd  math7  06082017, 12:07 AM
RE: HP Prime micro sd  pier4r  06082017, 12:51 AM
RE: HP Prime micro sd  math7  06082017, 01:33 AM
RE: HP Prime micro sd  Tim Wessman  06082017, 02:06 AM
RE: HP Prime micro sd  toml_12953  06082017, 10:11 AM
RE: HP Prime micro sd  Tyann  06082017, 10:54 AM
RE: HP Prime micro sd  Tim Wessman  06082017, 03:10 PM
RE: HP Prime micro sd  math7  06092017, 01:20 AM
RE: HP Prime micro sd  math7  06082017, 06:38 AM
RE: HP Prime micro sd  pier4r  06082017, 08:37 AM
RE: HP Prime micro sd  math7  06092017, 01:10 AM
RE: HP Prime micro sd  matthiaspaul  06092017, 11:12 AM
RE: HP Prime micro sd  toml_12953  06092017, 12:09 PM
RE: HP Prime micro sd  matthiaspaul  06112017 09:41 PM
RE: HP Prime micro sd  toml_12953  06122017, 01:26 AM
RE: HP Prime micro sd  math7  06102017, 01:47 AM

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