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1. Texas Instruments TI89 Titanium Graphing Calculator  
list price: $199.99
our price: $145.29 (price subject to change: see help) Asin: B0001EMLZ2 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 373 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description The TI89 Titanium's flash technology allows you to upgrade to future software versions without having to continually invest in new calculators. The 188 KB of RAM, combined with an impressive 2.7 MB of flash memory (three times the memory of the TI89), are more than sufficient for your stored functions, programs, and data, and add welcome speed to go with the TI's reliability. You can create custom menus or use the default menu. Another cool feature is the Program Editor, which gives you the ability to write custom applications. The large LCD is adjustable to your environment and can be viewed clearly under a variety of lighting conditions. The calculator also comes with an input/output port and cable, letting you synch up with other TI89s or TI92s, as well as a USB port and cable. An attached, hard slide cover protects the calculator from getting knocked around in your backpack. The manual that ships with the TI89 Titanium is a killer, presenting over 500 pages of clear, concise definitions, function explanations, examples, drawings, and appendices. It's divided into wellorganized chapters that cover all the major features of the calculator. What's in the Box Features
Reviews (10)
The extra $$ is worth it.
Great Calculator
gibberrish
Alpha, diamond, 2nd key words
Great Calc 
2. Texas Instruments TI83Plus Graphing Calculator  
list price: $99.99
our price: $93.90 (price subject to change: see help) Asin: B00001N2QU Catlog: CE Manufacturer: Texas Instruments Sales Rank: 453 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description
The clear, readable display exhibits 12 characters and eight lines, in 64 x 96 pixels on an LCD screen. The TI83 Plus has a pragmatic key layout and an easytouse graphing interface, with a simple programming language for creating conversion programs. The TI83 Plus stores and analyzes up to 10 matrices combined with data storage in lists containing up to 999 elements per list. You can also solve equations interactively for different variables. With the TI83 Plus, you can view an equation, its graph, and the coordinates all at one time. Jump from point to point by entering a number. Several useful plot types are available, including scatter, boxandwhisker, XYline, histogram, and normal probability plots. Advanced statistics and regression analysis, graphical analysis, and data analysis are readily accessed, along with features for calculus, engineering, financial, logarithm, trigonometry, and hyperbolic functionsall crucial tools for advanced analysis.
With its clear display and fast processing, the TI83 Plus incorporates graphing tools for mathematics and science course work, including statistics and finance. Incredibly useful for college boardsPSAT/NMSQT, SAT I, SAT II, Math, IC, and IICthe TI83 is essential equipment for advanced placement courses in chemistry, physics, and calculus. The addition of the optional TIGraph Link (software and cable) allows you to connect the calculator to your computer, permitting the transfer of files and data between machines. The TI83 is powered by four AAA alkaline batteries and one lithium battery for backup, with an automatic shutoff to save energy. It also comes with a hard slide cover and is supported by a oneyear limited warranty. Barbara Price ... Read more Features
Reviews (126)
A Highly Useful Calculator
AllPurpose Number Cruncher 1. Very fast, reliable calculations 9. Well written manual. My favorite calculator, I use this one the most out of my collection. Well worth the $...
Essential for any HighSchool Level Math Class The graphing capabilities of the TI83+ are a superb choice for Algebra I classes. The ability to automatically find intersections and a variety of other important components of a graph are only key presses away. The calculator has a powerful matrix editor allowing for easy multiplication, addition, and subtraction of matrices. Division of matrices is not possible. The list editor allows for statistical analysis of data both numerically and graphically. Graphically, the 83+ can plot data in several different formats. Anyone who is familiar with the BASIC computer language can program the TI83+ with ease. The calculator supports the use of almost every function through a program. Programs can be typed directly into the calculator, or on a computer. The TI83+ also supports a special form of programs called Flash Applications. Flash Applications are generally quite complex, and are written in a special language on the computer. The manual included with the calculator is superb. It goes into detail on every single option the calculator supports. Every section includes a Quick Start tutorial that provides an practical example covering many of the chapter's topics. Learning to program in TIBASIC, the programming language of the calculator is possible through reading the entire manual and following the examples. The TI Graph Link cable is the interface between a computer (PC or Mac) and any TI Calculator with a link port. It comes in several variations depending on what kind of computer it will be hooked to. The cable is not included with the calculator, but can be purchased as an option. The TI83+ Silver Edition includes a Black Link cable for Windows PCs. When the TI83+ is outgrown, upgrading the TI89 will require little work for anyone who has gained experience with TI's entry level graphing calculator. The TI89 has the capability to do Calculus and 3Dimensional graphs primarily. Overall, the 83+ is an excellent choice for anyone taking an Algebra course or any math class above that. The calculator does basic arithmetic, graphic, statistics, matrices, and a variety of other mathematical operations.
Highly recommended as a firsttime graphing calculator
TI83 
3. Texas Instruments Voyage 200 Calculator  
list price: $199.99
our price: $189.99 (price subject to change: see help) Asin: B00006D2Q1 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 1646 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Features
Reviews (17)
A Great Help After getting it, I was instantly impressed. The iconbased desktop makes navigating through all the features and programs much easier. The LCD is very easy to read and very big compared to other calculators I've used. It can do everything I need it to do, and more. The included USB link cable makes it easy to upload new software and updates to the calculator as well. I easily upgraded the OS on mine from 2.07 to 2.08 without a hitch. After getting this calculator, I would highly suggest you take a look over at TI's website and look for updates and addons. There is a lot to explore with these highend TI calculators, and the Voyage 200 is just another great milestone in the TI line.
Do you really need QWERTY? As for HP, well they've reentered the calculator business; the HP 49G+ will be available by the end of September, based on a processor more than 4 times faster than the original HP 49G. Add to that a standard USB interface (Just like the one you use to plug in your digital camera) and a builtin SD card slot, it'll be hard to beat for memory upgradability. And I hear they'll be reintroducing the equation library. For those of you who don't know, the equation library brought together a bunch of formulas from economics, physics, engineering, etc. and made them available through a menu system  instant crib notes! Can't wait to see a final production model.
A great product It is also outstanding the main menu and its easy navigation. You can customize it by adding software applications from the texas instruments web page. The "Computer Algebra" application can solve equations, integrals and much more. "Organizer" mades a nice calendar to schedule activities, classes, and keep track of the important business of you life. "Notefolio" and "Cell sheet" are applications that work as interface for text and data between calculator and computer. The operative system can be downloaded to the calculator via USB cable with out problems. In conclusion, I believe that is a great product. Just be careful, so many features are not allowed in most of the standardized test and courses.
Great product (By the way, they wrote a great user manual for the TI89. Download that one.)
Astonishingly powerful, but awful documentation Just beware that some standardized tests and some teachers will not let you use this calculator. The biggest drawback is the documentation that is supposed to help you utilize the power of this calculator. There really isn't any. There's a short manual that's included in the box, but it only gives you the broad overview of how to put the batteries in and how to turn it on and off. To find any information on how to, say, type something in that you want to factor, you have to load up the cdrom, and hunt around on that thing to find the information you want. It's a huge hassle  if I'm at class, or work and want to be able to use some function, I have to wait to figure it out until I can get home and load up the cdrom, find the right page, etc....not to mention that the documentation on the CDrom isn't that helpful either. There's lots of discussion of stuff, but it is very hard to understand. A great calculator, but awful documentation that makes learning how to use all of its powerful functions frustrating and annoying. ... Read more 
4. Texas Instruments TI84Plus Silver Edition Graphing Calculator  
our price: $125.95 (price subject to change: see help) Asin: B0001EMM0Q Catlog: CE Manufacturer: Texas Instruments Sales Rank: 664 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description
TI84 Silver Plus Silver Edition, kickstand slide case, USB cable/TI connectivity cable, silver faceplate, silver oxide battery, TI Product CDROM with full reference Guidebook and free software Apps, warranty information; four AAA batteries not included, alkaline recommended; color faceplates not included ... Read more Features
Reviews (3)
I Loved It!!
Great !
TI does it again 
5. Texas Instruments BA II Plus Professional Calculator  
our price: $47.99 (price subject to change: see help) Asin: B0001EMLZW Catlog: CE Manufacturer: Texas Instruments Sales Rank: 859 US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description Though it takes a little effort to master the collection of financial worksheets available on the BA II Plus Professional, you'll be glad you invested the time and money in this fine financial calculator. It operates in standard calculator and worksheet modes. The standard mode lets you perform common math as well as operations involving the time value of moneythat is, applications such as mortgages or annuities in which payments are equal and evenly spaced. You can also perform trigonometric functions in standard mode. The more hardcore worksheet mode includes tables for amortization, bond, depreciation, and compound interest. If you're not familiar with such calculations, the very helpful user's manual will guide you through the process. All previous worksheet values are stored in memory, so you don't have to retype all the bond maturity or cash flow analysis figures. The average user who wants to calculate a basic loan payment will be more comfortable working in the standard calculator mode. You can learn to calculate basic interest and payment periods within minutes, and more advanced features are available for those who require heavyduty financial computing. What's in the Box: Features

6. Texas Instruments BA II Plus Advanced Financial Calculator  
list price: $45.00
our price: $28.94 (price subject to change: see help) Asin: B00000JZKB Catlog: CE Manufacturer: Texas Instruments Sales Rank: 975 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description The BA II Plus operates in standard calculator and worksheet modes. The standard mode lets you perform common math as well as operations involving the time value of moneythat is, applications such as mortgages or annuities in which payments are equal and evenly spaced. You can also perform trigonometric functions in standard mode. The more hardcore worksheet mode includes tables for amortization, bond, depreciation, and compound interest. If you're not familiar with such calculations, the very helpful user's manual will guide you through the process. All previous worksheet values are stored in memory, so you don't have to retype all the bond maturity or cash flow analysis figures. The average user who wants to calculate a basic loan payment will be more comfortable working in the standard calculator mode. We were using the BA II Plus tools for calculating basic interest and payment periods within minutes. Still, it's good to know that the more advanced features are available for those who require heavyduty financial computing. Finance students and average users alike will find much to like in the Texas Instruments BA II Plus. John Frederick Moore ... Read more Features
Reviews (31)
Most Bang For Your Bucks The only thing the BA II Plus is missing is a "solver", but saving $60, I feel, is a good trade off, since most finance problems can be solved using the TMV keys. So to business/accounting/finance students, if NOT the TI83 (Plus/SE), then get this one!
Great Value for the Price!! The reason I cannot give this calculator a "5" is the fact that TI has cheapened it up quite a bit over time. My first BA in 1990 was by far the best built and lasted the longest. I exchanged it for the BA II in 1997 only because the letters wore off the buttons. The calculator in all aspects has become more flimsy with each new revision. So with intensive daily use, figure it will last about two to four years. After that time the buttons start to malfunction and it is time for a new one. Even my previous BA II Plus from 1997 was better in quality than this one. It had a tilted display for better readability, rubber stoppers on the bottom for working onehanded on slick surfaces and a small battery door. All of these features of the older model are not installed in this newest model. This newest version is also again lighter than the old one. I would pay subsantially more if TI would make this calculator in a better (metal!) housing with better buttons and more longevity, but price on these items obviously sells first and foremost in our society. Another issue I have with all BA II Plus calculators (the older one too) is the fact that the display is apparently supposed to be read from a 45 degree angle lookin from the bottom of the calculator. If you look straight down on the display, the numbers almost vanish. The contrast of the LCD display is in general not the best. It's annoying and I have never figured out why TI designed it that way. Don't be worried about this "quality issue" too much since with occasional use this calculator will last forever. Don't be distracted by some of the reveiwers here giving the BA II Plus a bad review. It looks to me they have been individuals using the HP 12C or similar reverse polish input HP calculators for a long time and can't hack the TI BA II Plus. The HP financial series and the TI BA II are very different beasts from a user interface and people used to the HP will not (or never) warm up to the BA II Plus easily. Besides, I learned for our company's finance dept. (all HP users) that HP 12C users are quite the snobs about their "classic" financial calculators. The BA II Plus calculator is definitly worth every penny it costs and will do more than the average consumer will need to do with it. It is especially recommended for personal households or individuals who want to calculate loans, mortgages, interst spendings and savings annuities for personal financial planning. Even if you have never held a financial calculator in your hands before, you will calculate amortizations, loans, savings annuities, interest cost and any other so called "TimeValue" calculation easily and within minutes. The manual is easy to read and well organized for the layman to get going right away. Bottom line: this calculator is geared towards the student and personal household user. There is no other financial calculator anywhere on the market today that will provide you with this amount of functionality and utility for this low price. PERIOD.
Good calculator for Mortgage industry
Horrible machine STAY away if you want to pass your CFA If I use it for my CFA exam i am sure I will fail.
BA II Was recently at an auto dealership helping my girlfriend buy a car and saved lots of $ and frustration by having this little jewel along. The finance mgr started quoting some strange monthly pmts and I was able to sit him down with the BA II and show him that his numbers made no sense based on our agreed purchase price. After a few rounds of this he gave up the tricks and started dealing straight. Yes I could have probably done the same thing with the 12c but in a situation with real $ at stake I reverted to thinking in Algebraic io RPN: Its very easy to get confused with several salespeople pressuring you to sign on the dotted line. While the 12C will always be a classic compared to the BA I appreciate the BAs straightforward design. Cons: Construction is a little weak, reverts to 2 decimal places after power is turned off Pros: Excellent manual, menus for cash flow calcs, no need to learn RPN, faster than 12c ... Read more 
7. Texas Instruments TI83 Graphing Calculator  
list price: $99.99
(price subject to change: see help) Asin: B00000JBO8 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 6303 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description The LCD screen displays 16 characters over 8 lines. Though the TI83's keyboard layout might seem daunting to those who've never laid eyes on a graphic calculator before, the helpful, if intimidatingly thick, manual will get you up and running quickly. The TI83 includes function, parametric and polar, and sequence plot modes. You can store, graph, and analyze up to 10 functions, 6 parametric and polar functions, and 3 sequence functions. The TI83's Draw operations allow you to annotate graphs. Along with the advanced math and science features, the TI83 also includes such financial functions as cash flow, amortization, and time value of money. The included inputoutput cable lets you link the TI83 with another TI83 or a TI82 for data sharing, and the optional TIGraph Link software lets you transfer files to a PC. ... Read more Features
Reviews (24)
Why should I get an 83?
worth its weight in gold
Great Calculator
Awesome Calculator!?!?!?!?!
Decent, but go for the 86 if possible 
8. Texas Instruments TI84Plus Graphing Calculator  
our price: $119.99 (price subject to change: see help) Asin: B0001EMM0G Catlog: CE Manufacturer: Texas Instruments Sales Rank: 1027 US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description
What's in the Box Features

9. Texas Instruments TI83Plus Silver Edition with Graph Link Cable  
list price: $169.99
(price subject to change: see help) Asin: B00005LA9D Catlog: CE Manufacturer: Texas Instruments Sales Rank: 3641 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Review
While the mathematic and graphing tools are comparable to the TI83 Plus, the Silver Edition boasts significantly improved speed and memory. Its processor is 2.5 times faster, and it has over 1.5 MB of memory10 times that of the TI83 Plus. These upgrades make the Silver Edition a significantly improved graphing tool, enabling you to work faster and save more of your equations and programs. Like the TI83 Plus, the Silver Edition has a large, easytoread 64 x 96 pixel LCD that fits 16 characters and 8 lines. Altering the contrast of the screen is intuitively easy, as is the key layout and graphing interface. Mathematic tools are substantial, including viewing equations, graphs, and coordinates simultaneously; advanced statistics and regression analysis, graphical analysis, and data analysis; and tools for engineering, financial, logarithm, trigonometry, and hyperbolic functions. The calculator is ideal for students in algebra, calculus, and statistics, as well as those taking the PSAT/NMSQT, SAT I or II, and AP College Board Tests.
The calculator is also rich in tools for those studying biology, chemistry, or physics, including a preprogrammed periodic table. Other programs included with the calculator include a spreadsheet, organizer for phone numbers, puzzle pack, probability simulation, and CBL/CBR applications. The most exciting bonus of the Silver Edition is TIGraph Link, which lets you connect the calculator to a computer and download programs from Texas Instruments' Web site (http://education.ti.com) and from enthusiast sites like www.ticalc.org. There you'll find thousands of programs and games for TI graphing calculators, as well as a TI83 Plus tutorial, electronic guidebook, programming support, and discussion groups. The calculator uses four AAA batteries and one lithium battery for backup. All batteries are included, as well as a hard slide cover, the TIGraph Link software and cable, and a remarkably readable 60page instruction manual. Overall, the improved power, faster speed, and included TIGraph Link for a remarkably low price make this a truly special "special edition," and we have to admit that the silver casing does look pretty cool. Ariel Meadow Stallings ... Read more Features
Reviews (126)
A Highly Useful Calculator
AllPurpose Number Cruncher 1. Very fast, reliable calculations 9. Well written manual. My favorite calculator, I use this one the most out of my collection. Well worth the $...
Essential for any HighSchool Level Math Class The graphing capabilities of the TI83+ are a superb choice for Algebra I classes. The ability to automatically find intersections and a variety of other important components of a graph are only key presses away. The calculator has a powerful matrix editor allowing for easy multiplication, addition, and subtraction of matrices. Division of matrices is not possible. The list editor allows for statistical analysis of data both numerically and graphically. Graphically, the 83+ can plot data in several different formats. Anyone who is familiar with the BASIC computer language can program the TI83+ with ease. The calculator supports the use of almost every function through a program. Programs can be typed directly into the calculator, or on a computer. The TI83+ also supports a special form of programs called Flash Applications. Flash Applications are generally quite complex, and are written in a special language on the computer. The manual included with the calculator is superb. It goes into detail on every single option the calculator supports. Every section includes a Quick Start tutorial that provides an practical example covering many of the chapter's topics. Learning to program in TIBASIC, the programming language of the calculator is possible through reading the entire manual and following the examples. The TI Graph Link cable is the interface between a computer (PC or Mac) and any TI Calculator with a link port. It comes in several variations depending on what kind of computer it will be hooked to. The cable is not included with the calculator, but can be purchased as an option. The TI83+ Silver Edition includes a Black Link cable for Windows PCs. When the TI83+ is outgrown, upgrading the TI89 will require little work for anyone who has gained experience with TI's entry level graphing calculator. The TI89 has the capability to do Calculus and 3Dimensional graphs primarily. Overall, the 83+ is an excellent choice for anyone taking an Algebra course or any math class above that. The calculator does basic arithmetic, graphic, statistics, matrices, and a variety of other mathematical operations.
Highly recommended as a firsttime graphing calculator
TI83 
10. Texas Instruments TI86 Graphing Calculator  
list price: $150.00
our price: $109.97 (price subject to change: see help) Asin: B00000JF53 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 2234 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description The TI86 runs with programs designed for the TI85 and includes all the same matrix features, but with a new matrix editor that allows the user to view and edit matrices in two dimensions. You can also view multiple lists and attach formulas to those lists for automatic computations. A new aspect of the TI86 is the ability to customize product functionality with machine language programs downloaded from TI's Web site. Besides the strong graphing abilities, the TI86 also has powerful calculus features like integration, derivatives, minimums, maximums, roots, and arcs. It also supports Z80 assembly language programming. The 64 x 128 highcontrast pixel screen displays eight lines of 21 characters each plus two levels of display menus. With the TI86, you can link to other TI86s and TI85s via the input/output port, and to CBLs, CBRs, and computers. Dana Van Nest ... Read more Features
Reviews (37)
An excellent buy
Served me well to date My high school normally gives out 85's for students to use during the year, but I found that the Table function makes the 86 a much more valuable tool than the 85. Using that table enabled me to get my work done faster and more accurately than other students in the class that used the schoolloaned 85. Overall, I'd say getting an 86 is a good investment for math levels, until you reach higher level calculus, when it may be in your best interests to invest in a TI89.
Good Graphing Calculator
Very Useful calculator I actually bought a TI89 around soph year of college just to complement the TI86. You see, the TI86 is a SOLID engineering calculator. It's got fast units conversions, an intuitive and FAST menu system BUT it lacks "pretty print", handling of units for math (keeps the units throughout equations, calculators), and integration/differentiation with the variables in place (it doesn't just evaluate it). With the right software, the TI89 is a very powerful math tool. I used the TI89 primarily for theoretical math but came in handy for standardized tests as well. I would recommend getting both the TI89 and TI86 and start familiarizing yourself with both calculators before you start tackling tests. Check the rules and regs for calculators also  standardized tests should allow the use of the 86 and 89. Overall, the TI86 is a solid math tool  notice I say TOOL because that's what it is. If you have no idea what you're doing in class, the TI86 won't give you an A. My recommendation is to get both the TI86 and TI89. Also, slap in four 750mAH NiMH batteries. You will NOT regret this because these calculators drain alkaline batteries in half a semester of intensive use. We didn't have cheap NiMH batteries back in the day  TI actually pushed the use of Rayovac Renewals (remember those rechargeable alkalines that only lasted 5 charges?) and our other choice was NiCd. Forget all that. Slap in four Energizer 750mAh NiMH batteries and you'll save yourself a LOT of money in the long run. That means more money for video games and other forms of entertainment in college.
Need a calc for engineering work? Get the TI86. It's menu system is extremely intuitive and easy to use. You can fire away units conversions and simple math w/o running into any problems. In Comparison, the TI89 is more powerful, has a better CPU, and has more memory  but the TI89 shines in its simplicity. It's quite powerful in the right hands and is more useful in the workplace. The TI89 is more suited towards the classroom environment. I bought one of the very first TI86's in 1997 and used it throughout high school, college, and a few graduate courses. I still carry it around at work because it's been a big help. I dropped it once and lost the first 2 lines on the LCD, but it's still chugging along fine. Just get 4 NiMH AAA batteries and you'll be fine for years to come. I made the mistake of using Alkalines, Rechargeable Alkalines, and NiCD batteries back in the late 90s when NiMH's weren't readily available. ... Read more 
11. Texas Instruments TI89 Advanced Graphing Calculator  
list price: $190.00
(price subject to change: see help) Asin: B00000JF55 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 1499 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Review The manual that ships with the TI89 is a killer, presenting over 500 pages of clear, concise definitions, function explanations, examples, drawings, and appendices. It's divided into wellorganized chapters that cover all the major features of the calculator. Graphing functions include basic function graphing, parametric graphing, polar graphing, sequence graphing, 3D graphing, and differentialequation graphing. Additionally, the TI89 includes symbolic manipulation, constants and measurement units, statistics and data plots, a numeric solver, a text editor, programming capabilities, tables, a splitscreen function, variable management, and the ability to link to other calculators or a computer. The large, colorcoded keys are easy to read and finda nice touch on such a featureheavy calculator. An improvement over earlier Texas Instruments graphing calculators is the addition of onetouch X, Y, and Z variable keys. The large LCD screen is also adjustable to your environment; we were able to view it clearly in a variety of lighting. The TI89 comes with an attached, hard slide cover that protects it from getting knocked around in a backpack. The TI89's flash technology allows you to upgrade to future software versions so you don't have to continually invest in new calculators. The whopping 500 K of memory is more than sufficient for your stored functions, programs, and data. You can also create custom menus or use the default menu. Another cool feature is the Program Editor, which gives you the ability to program. The TI89 also comes with an input/output port and cable, letting you synch up with other TI89s or TI92s. Jill Lightner Pros:
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Reviews (155)
Oh TI89 how do I love thee? Let me count the ways 2) entry memory : ever forget how you arrived at your answer? Your TI89 stores up to the past 80 calculations you've done 3) graphing functions: oh so much easier to do math when I can see the problem... function, polar, differential, parametric, sequential, even 3D graphs 4) algebra support: x^3 + 42x^2  8x + 2.1 = 0 ... forget factoring by hand : x = 42.1907945554 of course! 5) data tables: set up matracies, lists, and other data stuff... 6) units: A MUST for a science student... put in all your units and it will convert them 7) Calculus capabilities: differentiate, integrate, find limits (and MORE) of functions you type in! 8) Numeric solver: type in your own equations and plug in the numbers... KE = 1/2 * m * v^2 9) Easy interface, very intuitive 10) Seemingly limitless capabilities: download programs from the internet and load them on to your calcualtor (my favorite: the Periodic Table, with lots of data on each element). (you need the TIgraph link for a PCCalculator hookup) 11) You CAN use them on SAT1, SAT2s, APs, and many other standardized tests. 11 reasons doesn't come close to how much I love this calculator! If you are or will be taking any of these classes I highly recommend the TI89 : Calculus I, Calculus II, Statistics, Physics, Chemistry, ... and beyond!
Powerful calculator thats easy for TI82/TI83 users The calculator is actually powered by the same processor as the Macintosh Plus/SE, so it is very fast when graphing, solving equasions, or playing games. The screen is sharp enough to hold several expressions and answers or display a smooth view of a curve. Functions include the excellent CAS (try "solve(0=1x^2+2x+3,x)"), basic scientific math functions, programs (games), matricies (like a primitive spreadsheet), graphing, statistics, and many other functions.
Do your calculus and model scenarios too!
very friendly
It does everything!... And another user said that there are no stats options like ttests, pvalues, etc etc. Well actually THERE ARE if you DOWNLOAD TI's stats flash program off their site for free. QUOD ERAT DEMONSTRANDUM! So overall this calculator does everything... which may be bad. ... Read more 
12. Texas Instruments TI92 Plus Graphing Calculator  
list price: $250.00
(price subject to change: see help) Asin: B00000JBO3 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 7741 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Review With the TIGraph Link accessory (not included), you can connect to computers and even download software upgrades. Solve linear and nonlinear equations, use the Pretty Print feature to see equations in textbook format, and work with 3D surface graphs in real time. The QWERTY keyboard is rugged and easy to use, the 128 x 240 screen is easy on the eyes, and the calculator comes with a durable shell to protect its face when you're traveling or in the field. Additional accessories can turn the TI92 into a mobile datacollection station, but it's just as useful at home. Students beware: some professors and teachers discourage, or even ban the use of calculators like the TI92 in their classes, so make sure it's OK before you buy. Once you're set, the manual is clear and straightforwardyou'll be programming in no time. Ultrageeks will love the assemblylanguage option, but the rest of us can get by just fine with the regular interface. The old timers might still cling to their slide rules, but anyone who needs a calculator for school or work can see why the Texas Instruments TI92 is so popular: its versatility, power, and portability give you the numbercrunching power of a computer no matter where you are. Rob Lightner Pros:
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Reviews (33)
As good as a calculator gets!!
Most amazing calculator in the world
The Ultimate Calculator 1) Unique Qwerty keyboard: Immensely useful.
Make sure it is a Plus! Art Ketcham
Magnificent!!!!!!!!! 
13. Texas Instruments BA35 Calculator  
list price: $28.95
our price: $21.99 (price subject to change: see help) Asin: B00004UFMI Catlog: CE Manufacturer: Texas Instruments Sales Rank: 1901 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Review The BA35 is extremely thin, and although the button layout looks cluttered at first glance we rarely miskeyed entries. The buttons are also sensitive enough that little force is required to get them to register input, yet not so mushy that simply brushing them causes mistakes. Unlike many of the calculators in this price range we've tested, the BA35 actually comes with some useful documentation. A quick reference card with examples of important calculations like converting annual percentage rates to annual effective rates and entering statistical values is placed inside the calculator cover so you can always keep it handy. A small but surprisingly thorough pamphlet lays out the rest of the calculator's features, covering topics like compound interest and annuity calculations, and providing many illustrated examples for common procedures like computing mortgage payments or determining loan eligibility. It is possible to enable the calculator to display any number of fixed decimal places, and a percentage key can be used to easily add tax, subtract a discount, or determine a percentage ratio. There's also a Percentage Change key to easily find the percentage difference between two values, and Dedicated Cost, Selling Price, and Markup keys for quickly calculating profit margins. The BA35 may not have the advanced statistical modes and other complicated features of a more expensive financial calculator, but its combination of portability, price, and practical functionality should appeal to small business users who don't need all the nice extras they used to solve hypothetical problems in business school. T. Byrl BakerPros:
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Reviews (5)
Great for money, great longevity
Underrated but Outdated Deficiencies: 1. Lack of algebraic logic, it just does the calculations in the order you enter them. 2. inconvenient memory it takes several keystrokes to store or retreive from the memory (but you can use the 5 financial registers as memories). 3. wears out too easily I have had the displays on 34 of these calculators go whacky on me. This is not a problem I have had with other TI models. There are lots of cool tricks you can do with this calculator, but even the Society of Actuaries has moved on to allow more capable models.
Virtually everyone should own a business calculator.
Underpowered and overpriced My overall recommendation is  if you want a financial calculator that has actual capability, spring for either the HP12c or the TI BA II Plus.
A good, basic business calculator It came with a great book, teaching elementary foundations of statistics and finance. I do not know if the present version comes with this book, but I would hope so. I never had a statisitics course in college, but with this aid can do some meaningful analysis. ... Read more 
14. Texas Instruments TI73 Graphing Calculator  
list price: $92.99
our price: $92.99 (price subject to change: see help) Asin: B00004UFME Catlog: CE Manufacturer: Texas Instruments Sales Rank: 14479 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Review The highlight of the TI73 is its large display, which shows the history of your calculations, depicts graphs and charts, and has a high enough resolution to simultaneously display several rows of stacked fractions. The stackedfraction feature is a boon for struggling middle school students, as the results of calculations involving fractions are displayed as fractions, not decimals. The TI73 is fully programmable and comes with a fairly large library of builtin formulas, making things like time and distance conversions a snap. The product comes with two features that few other calculators boastfirmware with flash memory and link capabilities. The use of flash memory means Texas Instruments can upgrade and enhance the features of the calculator and make them available to TI73 users without requiring a hardware upgrade. Instead, you simply download the new firmware or software applications, connect the calculator to your computer, and copy the new stuff over the old stuff. The package comes with a cable for linking two calculators, but unfortunately, the cable for connecting the TI73 to your computer is sold separately. Texas Instruments didn't skimp on the documentation and bundles a 350+ indexed manual with the calculator. This tome is chockfull of illustrated examples that demystify the device's more advanced features like statistical analysis, lists, tables, and function graphing. We were graphing within 10 minutes of unpacking the TI73, and cobbling together simple programs within an hour. The TI73 is marketed as a calculator for middle school students, but it has enough power and features to satisfy all but the most advanced high school and college students. T. Byrl Baker Pros:
Cons:
Features
Reviews (4)
Depends on what you need a calculator for
Good calculatorbut I would save the money for a better one
The TI 73
Student 
15. Texas Instruments TI82 Graphing Calculator  
Asin: B00005QT8B Catlog: CE Manufacturer: Texas Instruments Sales Rank: 5421 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Features
Reviews (3)
TI82 vs. Other TIs
Fabulous Deal!
Easy To Use 
16. Texas Instruments 94327 Ti Graphlink USB  
(price subject to change: see help) Asin: B00006BXBS Catlog: CE Manufacturer: Texas Instruments Sales Rank: 2660 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Features
Reviews (4)
Works great, very fast. Highly recommended!
For now atleast, go with the black serial cable. Cons: The cable came with my TI83 plus silver edition. I read about all hte programs i could use on my computer to trasnfer stuff to my calculator ok. And I find the flip card program, it's like a digital verison of writing stuff you need to memorize on teh back and front of a note card and flipping it over. Well I get home and hook up the USB cable, and I find that almost all the programs i want to use can't use a USB cable. It was really agrivation. It just asks what "Com port" you want. And obviously i wnat usb... So the only good for the usb connectivity cable is to upgrade your calculators software and a few other small things. Nothing useful. Maybe they'll upgrade the programs later ot use the USB...
Better off with black graph link
Texas Instruments Connectivity Kit 
17. Texas Instruments TI85 Advanced Graphing Scientific Calculator  
Asin: B00005QT8A Catlog: CE Manufacturer: Texas Instruments Sales Rank: 8131 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Product Description Functions are widely varied, and include the ability to solve for systemsofequations, polynomialroot, or any variable in an equation. Graphing possibilities include parametric equations, polar equations, and solutions to differential equations. Statistical analysis runs the gamut from linear, logarithmic, exponential and power to quadratic polynomial, cubic polynomial, and quartic polynomial regressions. In addition, data is viewable as strings, pictures, or vectors. Simultaneous separate graph capability and 15 interactive zoom features are also included. The display is a generous eight lines long and 21 characters wide; this unit is powered by four AAA batteries, with a dependable longlife lithium ion providing memory backup. Texas Instruments includes a oneyear warranty covering parts and service. What's in the Box Features
Reviews (4)
replaced my TI30 Stat
Excellent Investment.. (1) Inverse of a Matrix (2) Solving Quadratic and higher order Equations. (3) Plotting the graph of Algebric Equations which help in finding out the Maxima and Minina.. regards,
TI  85 Overall, a good graphing calculator.
Awesome! 
18. TI SCI CALC TEACHER KIT  
our price: $185.99 (price subject to change: see help) Asin: B00008OOY9 Catlog: CE Manufacturer: Texas Instruments Sales Rank: 59519 US  Canada  United Kingdom  Germany  France  Japan  
19. Texas Instruments TI30XIIB Scientific Calculator  
our price: $15.99 (price subject to change: see help) Asin: B00008VF6N Catlog: CE Manufacturer: Texas Instruments Sales Rank: 4366 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Features
Reviews (1)
Good for college stats class The only thing that I wished it has would be a solar power strip because I'm always worried that I left it on and now the battery is dead, especially right before a test. ... Read more 
20. Texas Instruments TI5018 Desktop Calculator with SuperView Display  
list price: $27.95
our price: $9.99 (price subject to change: see help) Asin: B00004TS1A Catlog: CE Manufacturer: Texas Instruments Sales Rank: 1360 Average Customer Review: US  Canada  United Kingdom  Germany  France  Japan  
Amazon.com Review Two switches at the top of the calculator let you round decimals up or down and choose from several decimal display modes, including floating, fixed (0,2,3), and an add mode. Dedicated square root and percentage keys make these operations simple, and a backspace key corrects entry mistakes without having to clear the entire line. As we used the calculator, mistakes were rare, thanks to the large and responsive keys, and the few mistakes we made were easy to spot as they showed up on the big display. The display is angled slightly to make it easier to read when the calculator is sitting flat on a desk. That position also allows the solar cells that power the unit to soak up as much light as possible, although the included battery kicks in when room lighting dims. For those who need only basic functionality in a form factor that's easy to use and doesn't take up an inordinate amount of desktop space, the TI5018 is a good choice. T. Byrl Baker Pros:
Features
Reviews (1)
Great Desktop Calculator 
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