'm training its course and we made an initial calculation of traverse with Covadis last Friday! What changes from manual calculations using form and calculator (Excel is also a good alternative, although I prefer Open Office Calc for the clarity with which he introduced the tree in a complex formula!). However, it can be necessary in the field, promptly such a calculation (or other, for that matter!). So naturally arises the problem of choosing (unsolved to this day!) The calculator ideal, robust, compact (excluding graphics), who speaks gons / degrees (which excludes the Texas Instrument), easily programmable (the Casio Graph 25 + is not really a model of ergonomics as such) with enough memory (I think 30 KB must agree), possibly, native to manage lists or tables, and finally with the possibility of external backup programs. Oddly enough, this bird is not rare (at my knowledge) on the market, including the current choice. After some research on the internet and reading forums, it seems that the bird in question looks very much like an HP 41. This calculator is no longer manufactured. However, available on the market opportunity, we must be attentive to the oxidation state of the contacts. This is not (at least most) a credible solution in my opinion. Unfortunately, HP no longer observed the quality standards of yesteryear, both at the keyboard than at the processor (the HP 50 emulates the Saturn processor, which is perhaps not optimal!) .
In my previous job, I used a Casio FX 4500 P (from a dozen years in fact), which unfortunately lacks 30 KB of memory (it has only a few KB!) and the possibility of an external backup. Familiar mode of programming, I appreciate in particular the failure to use a tree of sub-menu to achieve certain functions, as is now the case on new generations Casio (those I know in all cases ). It has indeed an extra row of keys and 2 function keys alternatives. Missing also
microcomputers programmable basic (type Casio P 850) which allowed for the price of a certain size certainly to do what we wanted!
HP has recently released the HP 35s. It does not allow external backup but as the manual is available in pdf format, you can get an idea of its programming. It seems that deceive the calculator to display plain text (type = CLOSE) which occupies space and complicates the listing (and understood by one third). Moreover, the wording of the programs is reduced to its simplest expression. It is for example not possible to name a program "polygon".
remains the option of a PDA with a calculation program guidebook. I do not know if such applications exist. The PDA has the disadvantage of having a seizure that usually delicate, there is no keyboard, and that of autonomy, incommensurate with that of a calculator.
For the moment, memory, programming and external storage (cards or PC connection), it is almost doomed to chart, so with big pockets!
If you have comments, please!
In my previous job, I used a Casio FX 4500 P (from a dozen years in fact), which unfortunately lacks 30 KB of memory (it has only a few KB!) and the possibility of an external backup. Familiar mode of programming, I appreciate in particular the failure to use a tree of sub-menu to achieve certain functions, as is now the case on new generations Casio (those I know in all cases ). It has indeed an extra row of keys and 2 function keys alternatives. Missing also
microcomputers programmable basic (type Casio P 850) which allowed for the price of a certain size certainly to do what we wanted!
HP has recently released the HP 35s. It does not allow external backup but as the manual is available in pdf format, you can get an idea of its programming. It seems that deceive the calculator to display plain text (type = CLOSE) which occupies space and complicates the listing (and understood by one third). Moreover, the wording of the programs is reduced to its simplest expression. It is for example not possible to name a program "polygon".
remains the option of a PDA with a calculation program guidebook. I do not know if such applications exist. The PDA has the disadvantage of having a seizure that usually delicate, there is no keyboard, and that of autonomy, incommensurate with that of a calculator.
For the moment, memory, programming and external storage (cards or PC connection), it is almost doomed to chart, so with big pockets!
If you have comments, please!
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