Ti-nspire Cas Software-teacher Review

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(More customer reviews)The TI-Nspire CAS is an improved version of theTI-89 calculator. Like the TI-89 it has graphing and symbolic capability as well as the usual calculator functions. What is new in this calculator over the TI-89? The features that I have been able to identify and use are a definite improvement. One feature is that there are templates for most of the operations needed in calculus. These include integration, differentiation, limit, product, and others. The templates make it less likely that there are syntax errors in entering a calculation. The templates can also be used in programs as well as doing individual calculations.
It is possible to organize problems and documents on the TI-Nspire CAS. You can save work as documents. The documents have pages to organize the work into logical divisions. Your work can be saved and retrieved in an organized way. It is also possible to have more than one window displayed at a time. By this means you can monitor a graph as a parameter is changed or you can immediately see the effect of changing some part of a program.
The software version of the TI-Nspire CAS calculator is invaluable for those using the calculator in the classroom. Now you can bring a laptop to class with the software installed. By connecting the laptop to a projector, you can now teach the use of the calculator very effectively. The display is more detailed than projecting the calculator display. With the software version is also easier to write programs and do calculations since you have the computer keyboard and mouse.
Are there drawbacks? The TI-Nspire CAS is definitely intimidating. Once you have learned to navigate its many features, it is very powerful. However, without help, you will have trouble seeing how to do even some of the simple things that you may have in mind. As the calculator becomes more popular, this will not be the problem that it is now. Now, there is no one to turn to when you are frustrated.
As an example, I created some functions. They were examples to see how to create the functions and use them. When I was finished I wanted to delete them. But how do I delete them? Being familiar with the TI-89, I thought that the process would be similar. The familiar ways in the TI-89 did not work on the TI-Nspire CAS. Now that I have figured it out, it is simple enough. But finding the solution to this and other problems can be frustrating for the beginner. A human guide would be helpful and for most people essential.
How does the software compare with Maple and Mathematica? The TI-Nspire CAS software is limited, but has enough capability to be useful for classroom use.

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TI-Nspire Cas Software-Teacher

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Ti-nspire Touchpad Keypad Review

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(More customer reviews)I've used several different types of TI Calculators: A basic scientific calculator in elementary school (TI-30x), a TI-84 Silver Edition for Algebra and Geometry, and the TI-Nspire for Algebra 2 and Pre-calculus. When I recently got online and saw that TI had released the new touchpad keypad along with the new Nspire calculators, I ordered the new keypad right away. After all, this new keypad has a touchpad, so it must be great... right?
Wrong. It first must be noted that the touchpad is likely the best part of this new keypad. The touchpad functions reasonably well, only occasionally freezing up. There is a small rivet in the middle of the touchpad, which sometimes causes interference (this is also the only area in which you can tap the keypad to click, evidently they could not spread this feature to the other few inches of the touchpad). If you enjoy manipulating graphs by dragging various lines to different places and watching the numbers change... then you will probably enjoy using the touchpad. However, the touchpad is useless for doing the usual calculations. As would be expected, using the keys on the calculator is much faster for navigating the various menus on the Nspire.
Calculators generally have the same layout. The numbers are arranged in the same order; the plus sign appears under the minus sign, the minus sign under the multiplication sign, and the multiplication sign under the division sign. The makers of this new keypad seemed to feel the need to change this... The results, well, just look at the image of the keypad. These operations now appear side by side in groups of two (so if you're used to the traditional layout, it's quite annoying). In fact, they have rearranged a lot of the buttons on this new keypad, some of which include:
1. Instead of the traditional SIN, COS, and TAN buttons appearing, there is now just one button labeled 'trig'. Which means if you want to use TAN, you now must press the 'trig' button three times and then press enter. It takes even more button presses to reach the inverse TAN (of course, if you care to spend even more time you can select this using the touchpad)!
2. The original Nspire keypad had 16 round gray buttons. This meant simple one button access to the imaginary number, the heavily used value pi, various punctuation marks, etc. This new keypad has just 6 round gray keys, meaning you will need to press more keys to get to the same symbols you could access with just one or two keys on the original keypad. To use pi now requires two presses, the imaginary number and theta: three.
3. And perhaps the biggest move is that all of the alphabet keys now appear at the bottom of the keypad. This means a few things: (1)If you were finally improving your Nspire typing skills, this keyboard is a different width than the original Nspire keypad. (2)The keys are now even more cramped together, making it uncomfortable to type. Those with large fingers might have trouble typing. (3)The shift key appears in a completely separate area than the keypad, not very handy.
And now a few comments regarding how the keys feel when pressing them:
1. The alphabet keys make a loud and annoying clicking noise when pressed.
2. The round gray buttons also make the same annoying clicking noise.
3. The remaining white keys, the enter, ctrl, shift, var, and del keys all feel about the same to press as the original Nspire keypad keys (thankfully).
4. The remaining black keys (the ones in groups of two) require little to no force to press at all and make hardly any noise compared to the rest of the keys. The difference in the force required to press down on these black keys verses the white number keys is quite annoying when making calculations.
Overall, this is not a good keypad upgrade. If you're used to using the first Nspire keypad, it has much better functionality, so there is no reason to switch to this keypad. The only functionality advantage (besides the touchpad) this keypad has over the original is the button which allows you immediate access to the Scratchpad (which seems to be a relatively pointless function that was added to OS 2.0). If they had simply added the touchpad to the original keypad it would have been a great upgrade, but they didn't.
One last note, this keypad does come with a free registration code for the TI-Nspire Student software, so if you're interested in that, then this may be worth the price.

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TI-Nspire Touchpad Keypad

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HP F2229AA#ABA 12c Financial Calculator Review

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(More customer reviews)I happen to buy this product directly from HP. I had it for two weeks and the interal display broke. Called HP tech to find out about getting it repaired, and was told that it was my fault that it broke, and that it was not something that could be repaired, bottom line I was told I had to buy another at 160.00. I have had a complain into Hpheadquarters for about a week now and have not gotten a response. Next step is the better business bereau.

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Graphing calculator is designed for surveying, engineering, math and science professionals and students. Features a large equation library, more than 2,300 built-in functions, 75Mhz ARM9 processor, a SD card slot with formatting functions, RPN, Algebraic and Textbook data entry, large high-contrast screen (9 lines x 33 characters), serial port and plastic casing. Easily performs complex arithmetic and calculus functions with advanced Computer Algebra System (CAS). Calculate advanced expressions and view solutions in 2-D or 3-D graphical representation. 2.5MB total memory includes 512KB RAM plus 2MB flash ROM for performing future upgrades. Enhanced HP keypad with redefinable keyboard and menu keys reduces keying errors. Customize data with four font sizes and styles. HP Solve application allows you to type and store an equation, then use to solve any variable. Calculator includes a USB connectivity kit with USB cable, connectivity software and pouch. Runs on four AAA batteries.

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Texas Instruments TI-Nspire Math and Science Handheld Graphing Calculator Review

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(More customer reviews)This calculator is a great uprgrade from the Ti-84 and Ti-89 series. It is more that worth the price. Not many people have them only because the Ti-84 are recommended by schools. They are recommended by schools because that is what their teachers and instructors know how to use and therefore are familiar with the operations. If you go with the Ti-Nspire, which I highly recommend, buy the Ti-Nspire for Dummies at the same time because you won't find many people in which to ask for advice. Within a week you will be light years ahead of all of the Ti-89 and Ti-84 users if you go through the dummies book.

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Generous 3.5" diagonal screen size with exceptional 115 dpi resolution.

TallyGenicom TINSPIRE.

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Casio Graphing Calculator Review

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(More customer reviews)This is the best graphing calculator you can buy for under $100, period. I teach mathematics, and have used everything you can imagine, from TI to HP to Sharp and Canon, and this is the fastest sub-$100 graphing calc out there, nearly twice as fast to draw functions as the TI 84, which runs at least $20 more ($35 more at educational prices). It is also faster than my first generation TI89, and unlike the TI89, is legal to be used for ACT and SAT tests.
The menu navigation takes a few minutes to learn, but then it is easy, and much faster to do most things, compared to the TI and other calcs. For instance, it takes four button presses to find the zeroes of a quadratic, rather than the nine (or more) it takes on a TI.
The USB port means you can use it to write to a computer screen with the downloadable software, as well as use the computer to write to the calc; (you must supply the USB cable), and you can also hook to other Casios with the included non-USB wire.
The manual is online, or in a CD included with the calculators I bought. (is that still true?)
The screen isn't the best around, but is plenty good enough for my 45 year old eyes.
If you want a calc that will get you through anything from Algebra to Calculus and beyond, this is the one.

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MODEL- FX-9860g VENDOR- CASIOFEATURES- Graphing Calculator The FX-9860G Graphic Calculator has a large high contrast display with dual screen capability. Icon memu provides easy access to advanced functions. All the functionality of the FX-9750GPlus with USB connectivity 1.5MB flash memory natural display capability and a PC Emulator.* Suggested Courses for the FX-9860G Graphing Calculator include: Pre-Algebra Algebra I and II Geometry Trigonometry Calculus Statistics Biology Chemistry Physics Finance and Business.* The FX-9860G is allowed on all major exams like AP SAT I/II PSAT/NMSQT ACT and state level assessments allowing graphic calculators.-- SPECIFICATIONs -----------------------------------MEMORY- Available RAM/Flash ROM: 64KB/1.5MB Electronic upgradeabilityPrior Entry RecallNumber and Constant MemoryDISPLAY - Interface Iconic Menu Lines x characters: 8 x 21 Screen Size (Pixels): 64 x 128 Natural Display Input Capture Clip & Paste CapabilityLanguage Options Available GRAPHING- Function (y=Equations to graph): 20 Parametric Polar Sequence Constant (x=) Inequality (auto shading)Zoom TraceDynamic/TransformationConicsMATHEMATICS - Table of function values Fixed Decimal OptionsScientific Notation: 10 +2 Fraction Operations Interactive Equation SolverSimultaneous Equation Solver: Up to 6 Polynomial Root Finder: Up to 3 Complex Numbers Matrices: up to 55x55 Recall and Edit Last Entry Spreadsheet CapabilitiesCOMPUTER MATH - Calculates in Dec

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Casio ClassPad 300 Touch-Screen Graphing Scientific Calculator Review

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(More customer reviews)First off, I bought this calculator more out of excitement and curiosity than need. I thought a touch screen interface would be a wonderful thing for a calculator, and the descriptions leading up to the ClassPad's release were tantalizing and exciting. To sum up, what I feel I actually have is a strange mixture of poor planning and deep insensitivity to users' needs.
The display contrast is terrible. And if you try to remedy this with a strong light source, you trade horrible contrast for double images caused by shadows. The 'screen protector' Casio provides is no help, either. It adds a reflection problem to the mix.
The huge amount of screen real estate seems like it would be a wonderful thing. Unfortunately, it is used by the calculator's OS with stunning inefficientcy. Even performing basic calculations can be frustrating. As soon as you bring up the soft keyboard, a full half of your screen is lost. Answers or problems that exceed one line are simply truncated, followed by an ellipsis and a tiny, tiny triangle you must tap to see the rest of the line. There is no way to display the whole line at the same time.
The touch screen interface, the most intriguing aspect of this calculator for me (before purchase), is very poorly implimented. The calculator has a very basic keypad for entering numbers and basic functions. It also has dedicated keys for three variables, x, y and z. Oddly, they have no keys for storing anything in these variables. The only way to do it is using the 'soft keyboard', a touch screen keyboard with several panels of keys, all of which are quite tiny and very difficult to see due to the poor display. Imagine being in an engineering or technical environment and having to pull out a stylus every time you wish to do anything but the basic four functions. You cannot lay this calculator on a table and use it with one hand effectively, unless you wish to try to balance the stylus in your remaining fingers as you enter numbers, then flip it about to use it on the soft keyboards. And yes, you must use the stylus. All the soft keys are far too tiny to be used with a fingertip.
The documentation is bewildering. Individual commands and functions are often explained in relation to other commands and functins, and examples are given with no remarks or explainations. The upshot is that when you need to understand a function, you often have to make several trips to various indexes, back to pages that explain other functions, only to be driven back to the indexes again. To top it off, many functions have bewildering, counterintuitive names. What might be a self-contained 'if' command in another calculator or in a spreadsheet, for instance, is called 'piecewise' in the ClassPad.
The CAS is odd. As a matter of fact, the entire operating system is confusing at times. Menus are arranged in strange ways, icons on toolbars give few clues as to what function they perform. The built-in applications are not even loosly tied together, save by obscure system variables whose names are all but meaningless to humans. There's a plethora of functions and commands, but there is odd and glaring omissions as well. Who has seen a recent scientific calculator, for instance, that has no engineering format for the display? Only the ClassPad.
Programmability of this calculator is weak. It is especially difficult to prompt users for input, as there are odd limitations on things like input and output commands. And, of course, the poor, difficult to use documentation does not help.
This is a machine with tremendous potential that is marred by poor implimentation, and after having one for some years now, I see no signs of improvement. I would strongly advise anyone considering this calculator to visit the Universal Calculator Forum's ClassPad area. Read it carefully before investing in this expensive but frustrating machine. In my book, it is not a practical calculator for anyone, though some students seem to like it. Use this URL- http://www.casiocalc.org/ and click on the ClassPad forum.

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CASIO CLASSPAD300 PEN BASED GRAPHING CALCULATOR.

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Texas Instruments TI-89 Titanium Graphing Calculator Review

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(More customer reviews)My science and math minded daughter used a loner TI-89 all through her senior year of High School and, after being accepted at a very good engineering collage, asked for one of her own as a graduation gift. My daughter could have asked for another model or brand, but she did research and was set on getting the TI-89. This was most useful for use in her AP Calculus and Physics classes so she checked and found that this would also be among the preferred model in her college classes.
This is a seriously complicated device with a large learning curve and is likely more calculator than most people will ever need, but for those that do need these functions this is likely the right choice. I have only used it a few times out of desperation and was able to navigate the basic functions.
Highly Recommended!
CFH

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TI-89 Graphing Calculator - Battery Powered

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Chocolate Deluxe Calculator Review

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(More customer reviews)Calculator works, but the buttons are so hard to push it's not worth it. It is one plastic overlay for all the keys and the plastic is too rigid.
Wasn't practical so we tossed it.

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Got Chocolate? Everyone who loves chocolate needs a chocolate calculator. Even smells like chocolate. Yum! 4.5" x 2.5""

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HP 48G Graphing Calculator Review

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(More customer reviews)HP calculators are built to be used by professionals. They are built to a standard of quality you seldom see anymore. Unlike calculators from other manufacturers, people who use HP calculators tend to use them for a VERY long time! I have had my HP48g for 8 years now and it still measures up to the competition. YES RPN entry is different BUT it is FAR MORE efficient to use in lengthy or repetitve computations. Unlike Casio,Sharp, and TI, there is a tremendous amount of professional grade software for scientist and engineers widely available. There are games too. The HP48g is solid and it has an IR port as well as a serial port for connection to a computer or other device. This calculator is a powerhouse! If you are a science or engineering major and you want to be serious about your trade then this has to be a device you own!

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Now the power of 3-D graphing, charts, and lists are in an RPN graphic calculator. The HP 48G helps you work through complicated equations quickly and easily. Use the pre-created forms to input your data fast. The HP 48G gives you the functionality of a high-powered graphic calculator in an easy-to-use system.

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Texas Inst. TI-82 Graphic Calculator Review

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(More customer reviews)I apologize for the negative feedback given recently for the purchase of the Calculator I bought from them. It was simply mis-communication, and in doing so, they have issued me a $15.00 refund. I greatly recommend them, and I will be sure to buy from them again. Thank you very much.

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TI-84 Silver Edition Calculator Designer Face Plate Review

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(More customer reviews)I loved this faceplate! The only reason why i'm giving 4 stars is because of the skull on the front. other than that... its really pretty.

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This FacePlate and Holster fits TI-84 Plus Silver Edition. Easy to install protective aceplate. Personalize your TI-84 Plus SE with this designer faceplate & slide holster.

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Texas Instruments Inc. TI-84 Plus Silver Edition Pink Graphing Calculator (Extra Purple faceplate) Review

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(More customer reviews)This model of the TI-84 Plus Silver Edition is pink. The color may help ward off theft, but at the very least it is definitely not easy to misplace the calculator.
From the TI site you can find comparison charts, and for high school here are the main additions that the Silver Edition has over the regular TI-84 Plus:
It is for Precalculus, Chemistry, and Geometry. This has more memory and a few other bells and whistles, but the deciding factor may be if you are in one or all three of those classes. This also comes with downloadable SAT and ACT test questions to help a person prepare for those.
For the price, if you're considering this being used at least one year in high school and 4+ years of college, it's about $20-30 a year for one of the most helpful tools a student needs. Two thumbs up!


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Texas Instruments Inc. TI-84 Plus Silver Edition Pink Graphing Calculator (Extra Purple faceplate)The latest and greatest for high school students. An enhanced version of the TI-83 Plus, the nation's best-selling high school graphing calculator, the TI-84 Plus Silver Edition offers a built-in USB port, 9x the memory and 2.5x the speed of the TI-83 Plus. Already preloaded are 30 software Apps, including Cabri Jr. foralgebra and geometry and Periodic Table for science and chemistry. High-resolution, 8-line display includes horizontal and vertical split-screen options and exponents. Convert matrices to lists and vice-versa. Solve numerically for different variables in an equation with the interactive equation solver editor. Build scatter plots, xy-line plots, histograms and probability plots for statistics. Graph rectangular functions, parametric and polar expressions, and recursively-defined sequences. Practice for college-entrance exams with SAT StudyCards and official AP Biology exam review questions. Use the included cable to download new Apps, share data with a classmate or connect to any TI presentation tool and display your work to the class. Changeable color faceplates and kickstand slide case available separately. Features:* Electronically upgradeable operating system and features with extensive programming capability* 30 preloaded software Apps, including including Cabri Jr.* 9x the memory and 2.5x the speed of the TI-83 Plus* Built-in USB port and cable (included) make sharing data with a classmate easy* Prep for college with AP* Biology exam review questions andSAT StudyCards* Connect to any TI presentationtool (adapter sold separately)

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Texas Instruments TI-82 Graphing Calculator Review

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(More customer reviews)This calculator is good and is designed for pre-algebra and algebra students. However it is a very old model and has been discontinued. Most schools now use the newer TI-83 plus.

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TI-84 Plus School Pack Review

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(More customer reviews)This package has everything and a kitchen sink. Its such an incredible deal! The only problem is, it water powered, and I dropped it in the supply and fried all the circuits. But since i saved 66% on the first, I went and bought a second one and just used the first as a super cool paper weight. Needless to say I am the coolest gu in the office.

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MODEL- TI84PLUSTKYELVENDOR- TEXAS INSTRUMENTSFEATURES- TI84 Plus Graphics Calculator- Teachers Kit Yellow Teacher Pack includes (10) TI84PLUS calculators each with a bright easy-to-spot "school bus yellow" back cover and slide case. In addition each units faceplate is inscribed with the words "School Property".Also includes (10) USB cables (10) unit-to-unit cablesand manuals; (40) AAA batteries; (1) product CD poster and transparency. With the TI-84 Plus all students can now share their work by connecting their TI-84 Plus to any TI presentation tools for the whole class to see fostering a collaborative learning environment.Plus a built-in USB port makes data transfer to your computer and between handhelds easier than ever. The TI-84 Plus handheld is fully loaded with convenient features and accessories including a kickstand slide case compatibility with TI presentation tools on every unit and more!* Electronically upgradeable graphing handheld allows you to have the most up-to-date functionality and software applications (Apps).* 2.5 times the processor speed of the TI-83 Plus.* 480 KB FLASH ROM memory for data archive and storage of Apps.* 24KB of available RAM memory.* USB port for computer connectivity unit-to-unit communication with TI-84 Plus and TI-84 Plus Silver Edition graphing handhelds and more.* I/O port for communication with other TI products.* Internal Clock with date and time display.* TI Connectivity Cable included.* TI Connectivity Cable and TI Connect software allow information to be transferred to and from a computer and printed or stored on disk.* Included Apps: Cabri Jr. CBL/CBR Conic Graphin

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Texas Instruments TI-NSpire Math and Science Handheld Graphing Calculator Review

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(More customer reviews)Strengths:
The document management system -- multiple "problems" can be kept in the calculator at the same time, and each problem keeps its own variable names; good graphing capabilities; ability to split the screen and work with multiple views of the same problem; spreadsheet application. The calculator has 5 "applications" (calculator, graphs & geometry, spreadsheet, data & statistics, notes), and information can be shared between them.
Weaknesses:
The documentation is very poor. There are two user guides, with considerable overlap in the contents. In User Guide Part 1, which comes packaged with the calculator, there are 25 pages on the Graphs & Geometry application, and the information on how to actually plot a graph is barely mentioned. User Guide Part 2 comes as a PDF file, and has more detail, but is badly organized and missing a lot of information. For example, instructions for a number of operations say to "drag" something, but nowhere in the manual does it say how to do that.
Keypad: other reviewers have commented on the difficulty pressing the right buttons on the keypad. Even worse is the "mouse" operation. I finally discovered that dragging involves holding the center "Click button" while pressing the arrow keys on the "NavPad". It is very difficult to control the cursor with the NavPad, and doubly so when trying to hold down the click button. Also, what operation is done by a click or drag is dependent on where on the screen the cursor is, and it's difficult to control the cursor location with the level of precision needed.
TI-84 compatibility: This seemed like a great idea. However, as far as I can determine, there's no way to integrate TI-84 functions with TI-Nspire functions. When you put in the TI-84 keypad, you get a TI-84. With the TI-Nspire keypad, you get a TI-Nspire. If you want to transfer information from one to the other, it seems to be impossible. The only relevant information in the documentation about TI-84 mode is a warning that if you update the operating system, all your added TI-84 applications will be deleted.
Lack of software: The TI-84 has a lot of user-contributed software. There's almost nothing on the TI web site for the TI-Nspire. I also didn't find much with a web search, and some of what is available requires the CAS version. For example, there don't appear to be any built-in physical constants or conversion factors for units. I could switch to TI-84 mode and get them, but then what's the point of buying the TI-Nspire?
Summary:
This calculator does not appear to be well-engineered or well-supported by TI. I would recommend waiting to see whether they give it the support that it deserves.

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The TI-Nspire handheld comes with a snap-in TI-84 Plus Keypad that provides the same keystrokes as TI-83 Plus, TI-84 Plus and TI-84 Plus Silver Edition graphing calculators. Whether handhelds are provided by your school or your students bring in personally-owned units, this side-by-side compatibility between TI-Nspire handhelds and existing TI graphing calculators delivers a comfortable transition to TI-Nspire technology.Inclueds USB cable for software and file downloads.

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Texas Instruments TI-89 Advanced Graphing Calculator Review

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(More customer reviews)The TI-89 is an excellent calculator. It has an absolutley HUGEfeature set, and is so advanced that it can basically do most math for you. My favorite features are the CAS (computer algebra system), which can solve a lot of algebraic equations for you, and the factoring function (I dont have to waste time factoring on paper anymore! whoohoo!). My old ti-83+ seems like a slide rule compared to this thing, but the 89 is still quite easy to use. In addition, not only is this calculator great for math, its great for games! There's a multitude of mathematical programs and games that you can find for free online. . . The only downside to this calculator is that the rich feature set can actually be a problem. A lot of students that use this calculator rely on it too much, and some of them barely understand any of the math that they are supposed to be learning. It is probably for this reason that it and its brother the TI-92 (difference between the TI-89 and TI-92 is the 92's qwerty keyboard, useless for a calculator in my opinion,and the 89 is smaller) are banned in some colleges, and on some tests, like the ACT's. If you've got the discipline not to rely too much on this fine piece of equipment (if you're a student), I highly recommend this calculator. But be warned, keep your old calculator around for tests that you can't use your 89 on, and NEVER rely to much on it.

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Introducing TI's most powerful graphing calculator: The TI-89 Titanium, offering new features, preloaded Apps, and even more versatility. A built-in USB port makes data transfer ultra-convenient. Plus, with three times the memory of the TI-89, you can store more Apps, data, and programs

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CASIO - Graphing Calculator (CLASSPAD330) Review

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(More customer reviews)I purchased this Casio ClassPad 330 through Amazon and Computer Brain Inc. I ordered the calculator on November 15 and I received it on November 18 via an express carrier. I am delighted by the responsiveness of Computer Brain and their working relationship with Amazon. It's an ideal partnership that gives buyers like me a great feeling of security, and attention at a great price.
I bought the Casio 330 AFTER I already purchased the Hewlett-Packard 50G AND the Texas Instruments nSpire with TI-84 keyboard. The HP is a quality product built to the standards of their long line of calculators. The TI nSpire represents great value for the price along with a widespread user community. I kept the HP because of its external SD storage capability although it will take me a long time to master the keyboard and internal functions. I'd rather not spend the time required with the HP to master its capability. I was a former jet aircraft pilot and I like to joke that the HP is more complex than my old aircraft cockpits. Regrettably, I returned the TI nSpire/84 because the display was so dim that my eyes hurt after ten minutes of straining. When calculators like the TI have adjustments for contrast, it's really an erroneous understanding because when you increase font contrast, you also increase the contrast of the background screen which means the font does NOT improve relative to its screen background.
The Casio 330 has tremendous contrast range which actually works. I even left the contrast setting at the default level because it is super, even for my old, tired eyes. The screen has stylus touch ability that HP and TI both lack. This makes the Casio operate a lot like a Personal Digital Assistant (PDA). It's intuitive, responsive, and fun to work with. There are applications, functions, and modes of operation common to other high-end devices along with the ability to connect to a desktop. If you feel that Casio is limited to low-end, low-cost devices, think twice and give this calculator a chance. If you purchase it from Computer Brain through Amazon, you'll discover like I did that it's the perfect solution to other troublesome calculators. One last thing-the Casio comes with a hard-shell protective case, startup manuals, cable connectors, batteries, and the best news of all - IT'S NOT PACKED IN A BUBBLE-PACK which is often impossible to open. Casio comes in a nice, "retro" box.

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The ClassPad 330 comes with all the functions of the ClassPad 300 including an impressive collection of applications that support self-study, like 3D Graphing, Geometry, eActivity for creating discovery based lessons and lots more.Uses an intuitive pull-down menu interface that simplifies even complex operations. Solutions, expressions and other items can be selected with the tap of the stylus.

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