These two calculators are the evolution of the main models of Hewlett Packard, and Texas Instruments, respectively. I will compare aspects and features of both products to deliver a profile as objective as possible to them.
In the box
The two calculators come in a plastic pouch. The HP comes from starting with a disadvantage, the user manual is much smaller than the TI.
The HP Calculator includes a basic manual and the TI includes a manual that apparently recounts all the functions of the calculator in less than 320 pages.
Each Calculator comes with a CD-ROM which includes drivers for communication with the computer and the user manual. It should be noted that the advanced manual for the HP is about 1000 pages, in PDF format. In addition, the calculator you includes the disk to the calculator (Apps) applications, unlike the disk from HP that does not include them.
The two calculators include battery, the HP uses three AAA batteries and a backup lithium battery. The TI uses four AAA batteries and also a lithium battery.
Also calculators include the USB cable, and Additionally the calculator it comes with a cable connection between calculators, similar to that used by the series of graphing calculators CASIO.
A positive point of the HP is your (synthetic) leather padded with a magnetic snap case. The TI has a slide-out plastic cover, which is subjected to pressure, typically, mechanism that expires with the cover and use ends up falling off single.
Design and materials
Although both calculators are manufactured in China, the TI gives the appearance of being more solid, in addition to (non-conventional) screws to repair. The HP has screws, but also you cannot remove and refit since bumpers that sustain it can be cut and replaced with a screw.
The TI has a rounded and dark design. Function labels color is quite attenuated what could make it difficult to read.
The HP has a modern appearance, with brighter colors, highlighting the gold of its exterior. The arrow keys are separated, not like in the TI where the vertical direction is composed of a long button, which I find especially uncomfortable.
The great dilemma of HP has been the quality of their keyboards. First series calculators had a keyboard so bad that he began with failures like for example keys sinking after less than three months.
As a recommendation for a calculator HP49g buyer, it is important to verify that the serial number of your calculator is greater than or equal to CNA5. The probability that your calculator present keyboard failures as well reduciras.
I would say that the screen is one of the most important elements of a calculator, the user-level. Good contrast of the screen makes the calculator much more usable, being more pleasant to use it.
On the topic of contrast, the HP exceeds many times the TI. The TI screen has a slight green color and graphics appearing on the screen are dark gray, on the other hand, in the HP looks dark graphics on an off-white background.
In addition the HP screen is protected by a mica, and the TI is directly facing the environment.
This comparison is probably one of the most appreciated, because it compares the features I got from the manual and specifications published for each calculator.
Integrated flash memory capacity:
TI - 89 Titanium: 2.7 MB
HP 49 g : 2.5 MB
TI - 89 Titanium: no
HP 49 g : 1024 MB or more (card Secure Digital)
TI - 89 Titanium: 12 Mhz
HP 49 g : 75 Mhz (lift to maximum 200 Mhz, 120 Mhz stable)
TI - 89 Titanium: 160 pixels by 100 pixels
HP 49 g : 131 by 80 pixels
TI - 89 Titanium: USB (proprietary protocol) & owner
HP 49 g : USB (X-Modem, Kermit), infrared (IrDA)
Programming and debugging on the device capabilities:
TI - 89 Titanium: TI-Basic
HP 49 g : HP-Basic UserRPL, SystemRPL, ML
Data input methods:
TI - 89 Titanium: Algebraic command-line, slate (optional applications only), Editor of lists and matrices
HP 49 g : Algebraic command line and reverse polish notation (RPN), integrated slate, Editor of lists and matrices
TI - 89 Titanium: Multiple languages (including Spanish) supported (functions, messages, and environment)
HP 49 g : minimum support of languages (some messages)
Mathematics, speed and capacity
Due to the absence of an evaluation of commands command timed in Texas Calculator (the HP has the command TEVAL, which evaluates commands and returns the time of evaluation) is difficult to compare the performance of calculators objetivamente.
However the HP Calculator shows starting its greater capacity to calculate factorial of the level of 2000! with the possibility to show their more than three thousand digits. The limitation of the HP command are probably simply from physical memory.
Instead of you it is impossible to calculate a value of 300! for example, or manage large arrays with the agility that makes it the HP. It is true that some integrations Texas, made them "faster" due to its integration by internal tables of integrals, but we frequently see messages of "values were approximate", where we note that certain integrals differ from responses to delivery the HP in some decimal.
Denotes quoted above of greater speed, as the HP Calculator can be overclocked, i.e. increase its clock frequency, getting better speeds at cost of increased consumption of energy. This can be done with a program allowing for example, integrate twice the speed raising the frequency of the processor to a little more than twice the original (200 Mhz). While at top speed calculator is not controllable, a speed of about 124 Mhz is.
In favor of the TI, I can say that I find amazing applications that includes, as for example Cabri Geometry among many others. The quality of these applications, that seems notable but they are a very basic level and for beginners, do not cease to be useful.
The user experience when using "the educational product" of Texas Instruments is quite comprehensive. The it environment is friendly, intuitive and easy to use also the full range of applications including calculator will provide additional capabilities such as organizer, Notepad, among others.
However, the TI base system does not reach the elegance with which HP does your calculator. Although HP is nowhere near being an intuitive calculator nor easy to use (even with the algebraic mode) all the elements interact as if it were a piece of watchmaking, in contrast to the TI, the HP operating system is a whole, with a high mathematical precision.
The TI shows in everything that was designed as a product clearly for students.
If you classify the HP, personally I would place it as a product designed for engineering and not as suitable for students from first years as the TI.