No matter if the calculator looks black or blue, HP it is still selling us the same calculator since a lot of years. And keeping in mind that the 50g is basically a small update over the 49g, then we have much more years to consider. How does the HP-50g looks against the latest TI-Nspire CAS CX?
Apparently, Texas Instruments (and even Casio Electronics) are light-years ahead of HP in terms of advances in these devices. The TI Nspire CX is a modern device. All advances in portable devices with which we deal on a daily basis as a lithium battery, illuminated retro color display and capacitive touch surfaces have permeated him.
It is true HP is much more worried about their other trade areas, however the idea of this document is to try to compare the capabilities of these two devices to a future potential buyer of these equipment with the options available in this moment (independent of whether there are any new model announced or not).
When newly appeared the 49 g , the specifications were far superior to similar products during those years. YOU currently takes the lead with ease:
TI Nspire CAS CX: 320 × 240 pixels (color, retro-iluminada)
HP 50g: 131 × 80 pixels (gray scale)
TI Nspire CAS CX: 100 MB internal
HP 50g: internal 2 MB, 1024 MB or more (SD card)
TI Nspire CAS CX: ARM9 90 Mhz (ARM926EJ-S)
HP 50g: ARM9 75 Mhz (lift to maximum 200 Mhz, 120 Mhz stable)
TI Nspire CAS CX: 64 MB
HP 50g: 0.5 MB
TI Nspire CAS CX: Keyboard, small touch pad
HP 50g: keyboard
TI Nspire CAS CX: Internal lithium ion (on hold last a couple of weeks, in use less than a week)
HP 50g: 4 AAA (standby last more than 6 months, in constant use around a month)
Although within the field of calculators, they are not any device that requires many updates (for me is more like an oscilloscope that a PC in terms of update requirements) clearly, the years have passed the Bill and HP looks already quite not current.
Years ago the 50g users do not receive any update ROM or anything. You can think that a product reaches perfection and don't need never be more up-to-date.
The point is, what happens if the environment where the product is used daily advance? and... would really go?
The concept of use of both devices is similar, but its implementation is different. The HP uses a directory as a basis (working directory) where the applications and functions write data and lists. From the view of FILES we can change to another directory (or commands):
Charts and lists are handled as basis functions. For example to open the Graphics tab and add an equation the HP created a program in UserRPL in the working directory. The same happens with many other functions. There are other applications that interact directly with the battery, which is the main data concentrator.
The HP graphics
The HP - 50g to generate a "macro", gives many more freedoms than you may think.
For example, to the graphing X ^ 2, the HP generates a file 'y1' containing:
This assigns X and then evaluates the algebraic object between single quotes. Now, thanks to this is possible to replace the entry by:
And so we could place 5 as upper limit of the X axis. The versatility of this is actually infinite, but this is just a simple example.
In the TI, the schema uses the same concept but here is more explicit. A "Scratchpad" to which are added documents opens. Documents in this case make reference to the application that edits them, and data. For example, we create a new one:
Add one of the calculator (which is similar to the battery in HP, without being a global hub, being only a simple interpreter):
And the same goes for the graphics:
This, although it is much more rigid, increases convenience. Everything is concentrated in one place, data and "applications", but we lose some flexibility, as shared objects directly between applications and we need to use other avenues such as copy and paste at certain times.
As we don't have the battery to work, it is difficult to reprocess such an arrangement quickly and do something with it out of providing the lists editor. This clearly is not important for the normal user, however the lack of this excessive flexibility also avoids having the learning curve which calls the HP.
In addition, the home of the calculator is friendly and provides other forms of starting work (when you don't have any open Scratchpad as it does a few seconds):
Documents on the calculator
One of the most viewed articles on my site is how to place documents in the HP. A subject that is not rendered correctly, and has poorly designed tests allows a person to have advantages to having "memoranda" on your calculator. Personally I would prefer that this does not happen, but in the current framework is something important when purchasing a calculator.
As we saw in the document entitled Writing documents in your HP Calculator Although we have options in the HP, offering you exceeded by far anything HP has been able to offer us in the past (and that was only the horrible Conn4x):
The installable application on the PC of TI have a full editor problems, where we can create any type of document, sort it by problems and import data. There is no official way to import other types of files such as Word or PDF, but I would not hesitate to the potential of the calculator to allow any third party application to do so.
CAS, commands, reference and other aspects
During my studies, the link with my HP was always present. Personally I always thought engineering was one of the few races in which it should not matter what you memorize something at the time of the test and it was normal to allow calculators in testing. As I already mentioned, the calculator should be much more than a carrier of documents (torpedoes), should provide enough to not need to reference books to face challenges. Let's see how our two containers behave:
CAS and catalog commands
In calculus, algebra and other courses, the usual expected part through the functions of CAS, search for unknowns and clear simple. This is then complicated by limits, derived and integrated. Matrix, lists. Eventually it comes to differential equations, Fourier, Lagrange, Taylor, probability estimations of economy and other methods. Both calculators have clearly bases to face any of these problems.
Reviewing both advanced manual calculators, I notice that Texas, despite having a much more didactic manual, missing several commands (not all are necessary because it CAS CX has other ways of manipulating information, however there are methods that simply don't exist). The complete list is below (770 versus 372):
Documentation on the device itself is quite precarious in the HP, there are applications that expand the catalog, but original form is a brief reference by command:
In Texas there is nothing equivalent, but there is a catalog that shows references to parameters of each function (which can help predict what does):
Additionally, there are certain features that include attendees requiring the input of parameters by means of a dialogue:
Work on several problems at the same time
To solve several problems at the same time, in the TI we can divide the screen easily:
It is also possible to use the upper tabs to swap between sections of the current problem, or the main menu to switch completely from Scratchbook as he could see makes some paragraphs.
In the HP nothing is so elegant. We can use HALT and CONT to suspend and continue to edit a pile of commands or change are main directory with the CHDIR and VAR/HOME but there is nothing to perfectly isolate the work on several things at the same time.
The TI includes an incredible editor of geometry that is unthinkable in the current HP thanks to the small touch surface that possesses.
This editor allows to work with exact measurements and shapes similar to a simple CAD application, graphically solving problems that otherwise would be very difficult to even imagine.
The current HP stays more than anything by the nostalgia of their users as HP really has done nothing in years to improve the experience. Despite this, the years of development which has the HP maintaining it as a solid product to address engineering problems and such as I felt it with the TI89 Titanium in the revision of some years entitled HP49g versus TI - 89 Titanium I still feel that TI product is much more oriented towards education and people who really want a calculator as a temporary tool, rather than a support permanent.
That said, hardware product that gives you is unprecedented and is very ad-hoc with the current times. Noteworthy is the low quality and resistance that the latest HP models have shown, personally I have no information on TI, but on my site on a nearly daily basis I get a comment or an email of someone who by that recounts will need another calculator, then your HP has stopped working irreparably by problems on the screen or batteries.
As closing of this conclusion, it is always in the end a decision by each user, but at this time, TI product I would recommend to any student or professional simply because being a modern product is much more versatile, easy to use and fully control. Even imagine that it is almost possible to emulate a HP50g within the new TI. Only now we can perhaps expect when time HP movement in the world of graphing calculators...
The future of graphing programmable calculators of HP, the new HP Prime
During the 2013 HP announced that they had a new calculator that would be available during the same year (the final months of 2013).
This new calculator rejects the entire base of the serious HP48 and presents a solution that is very similar to what you offer. In fact there is no RPN (there is a input method, but it is no longer a global stack; what makes sense anyway).
Naturally it is necessary to take it into their hands to say, but at least there is a light in the distance for HP users... but this is another story. There are available a preliminary emulator that allows you to try it without compromise: