Features

• Graphing calculator for math and science work
• Computer connectivity enabled
• Programming and data collection
• 8-line by 16-character display
• 1-year warranty

Reviews (4)

TI-82 Review
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.

TI-82 vs. Other TIs
TI-82 Is great, I think!?!?? Am returning to college after 30 years. Decided to start with basic mathmatics. Will do Intro to Algebra next semester. On to a Math degree. I am preparing an alternate career to the one I am employed in. I am anticipating a lay off. Thought I would try teaching . . . Math! Anyway, can anyone tell me will the TI-82 do ok for Algebra? Then I could use my money to buy a TI 200 or 92 or 89. Use at home if I can't in class/tests. And . . . I inherited a TI-82. Long story. Please email: kerux@centramedia.net

Fabulous Deal!
I missed the current sale of this particular calculator so my only option was to go online.I found this one for a super low price and received it merely a few days later....in great condition.It does every function it was meant to do and is easy to use! ... Read more

Editorial Review

Students and financial and science professionals, warm up your fingers. The HP 49G+ Graphing Calculator provides basic RPN, algebraic, and textbook entry through its redefinable alphanumeric keyboard. It boasts more than 2,300 built-in functions, with 1.13 MB of user memory. An easy-to-read display accommodates up to nine lines, 33 characters wide, giving you ample room for graphing.Read more

Features

• 131-by-80-pixel display, up to 9 lines by 33 characters
• RPN, algebraic, and textbook entry system logic
• 1.13 MB memory; over 2300 built-in functions
• Advanced statistical, mathematical, scientific, graphing, and programming features
• Carrying pouch, batteries, and USB cable included

Reviews (77)

This is a pile of junk.
A $150 calculator that I am going to trash.I had the same problem with the keyboard (terrible response); I struggled with it for about a year and then called HP.My warranty was out, so Hp suggested I install an update, which I did.Now the keys are firing off 3 or 4 digits with one press of the button.This is ridiculous.

I don't know what has happened to HP
I got this calculator about a year ago. There was some locking up problems and sometimes it would not turn on. I updated all the ROMs like HP instructed. Finally, I got a replacement from HP. But it turns out it was some old refurbished one that the enter key smashed in after I used it for 10 minutes. I had to pay to send this one back and now, they sent me another old used replacement. Most of the gold paint has flaked off the front of this one and also around the side trim. It started missing keystrokes with the latest ROM, so I had to go find an old ROM from last year on the Internet. The keyboard is piss poor and makes a "thunk" noise, annoying when I am taking a test and to the people around me. Also, the right shift key started feeling loose today.
La mejor
Compre esta calculadora luego de anios de uso de la 49g laz verdad el cambio es genial, esta es mucho mas rapida y poderosa. Muy recomendable. ... Read more

Features

• 131-by-64-pixel high-contrast display
• 256 KB of memory, over 600 functions
• Large comfortable keys with wide spacing
• 2-way infrared port for wireless communication
• Statistical, scientific, graphing, and programming functions

Reviews (3)

Not perfect, but good enough
I'd recently bought an HP-49G+ and was terribly disappointed, both by its overall poor design and extreme complexity. I wasn't expecting much from the 39G+, but it really surprised me--especially given the low prices it's been going for lately.
worthwhile
Calculators as the H.P. 49 II, H.P. 48 II, T.I. 89, or T.I. 92 are beyond the average high school or Junior Collage student's needs.
The 39g+ is clearly a winner
The Hp 39g+ is overall a decent calculator for you basic middle school and high school needs.
Read more

Editorial Review

Designed with students of higher math in mind, the TI-85 is a scientific calculator that offers a wealth of features and functions that will take you smoothly from pre-algebra all the way through college calculus. Its data I/O port and unit-to-unit link (compatible with all TI-85 and TI-86 models) allow you to easily transfer your final graphs and equations among systems, while the 28K RAM and customizable menu keys provide quick access to necessary programming functions. As you advance through classes, simply reprogram the keys to keep up with your new textbook chapters. Read more

Features

• Up to 99 graphing functions defined, saved, graphed, and simultaneously analyzed
• Easy-to-read 8-line by 21-character display
• Link capabilities for data transfer through I/O port
• Powered by 4 standard AAA batteries with a lithium battery backup
• Guidebook, unit-to-unit link cable, case, 1-year warranty

Reviews (6)

That calculator is not the TI85 graphing calculator from Texas Instrument.
Don't get me wrong but that calculator shown in the picture is not the TI-85 graphing calculator from Texas Instrument.I have no idea what that thing shown in the picture is.

The calculator did not work
The calculator did not work when I got it even after putting new batteries in it so I contacted Mr. Carlson.He was so nice and got right back with me.He apoligized for it not working and said that he would return my money.And in a few short days, I got a check in the mail from him.I found him to be a very nice guy and very true to his word.

replaced my TI-30 Stat
I used a scientic calulator for years. I bought the TI-85 my Senioryear of High School and even though I'm not yet in college (five years later) I'm still a nerd that likes to play on it. most of time I just use it for basic stuff I can still do with a new TI-30X I bought granted I can graph with it and I've been looking hard at TI-89 for no other reason than I can. (more than likely would be my next purchase if I did buy another one) the sad thing is resources for this calulator are limited seeing as it's been discontinued but you know it's still more powerful with it's computing power over my GF TI-83 plus. it just lacks the storage of memory. ... Read more

Editorial Review

Great for students and teachers in the sciences, engineering, or mathematics, the Casio FX7400G PLUS graphing calculator offers basic and advanced functions including fractions (conversion, mixed numbers, and decimals), standard deviation, regression analysis, and base arithmetic. You can create tables of values from given functions and then generate plots and graphs from those tables. Simultaneously, you can store, graph, trace, and analyze up to 10 functions and, in addition, up to four pictures can be stored and used as backgrounds for comparing graphs.Read more

Features

• Graphing calculator
• Easy-to-use icon menu selection
• 6-line-by-13-character dot-matrix display
• Enhanced fraction features including simplify and fraction-to-decimal conversions
• Rectangular, parametric, and inequality graphing of up to 10 functions at a time

Reviews (6)

n
Not that bad of a calculator.It graphs and calculate pretty good.However, It can be difficult to use because the key are confusing.Purchase with manual is better.

First Graphic
I purchased mine for $49.Its suitable for any classes through college algebra.For trig you'll want to upgrade as it doesn't graph polar coordinates though it does convert rectangular to polar and back.If you needed to you could program it to input the (x,y) into a parametric graph and so display the results. Memories?
This calculator has many good features.Large enough for keys to be easily used, but fits in a shirt pocket.Uses two cheap AAA bstteries with a button battery for memory backup.It has a detailed instruction book, But the MEMORY is next to IMPOSSIBLE to access. The calculator does not even use the word memory, but uses the word list. It goes in to great detail how to manipulate the data in the list, but does not have a store or save and a recall buttonI spent 2 days trying to figure it out, and finally took it back.The HP9g that I replaced it with was easy to enter and access memory. ... Read more

Editorial Review

With more power than most of us had in our PCs less than 20 years ago, the TI-92 Plus graphing calculator is the machine of choice for students and engineers both at the desk and on the go. It comes with over 500 KB of memory and software for working through algebra and other mathematic problems quickly and easily.Read more

Features

• Over 500 KB memory for storing functions, programs, and data
• Pretty Print technology displays mathematical expressions as they appear in textbooks
• QWERTY keyboard and large display; real-time rotation of 3-D surfaces
• Electronically upgradable using flash technology
• Input/output port and cable; also supports optional TI-GRAPH LINK

Reviews (35)

The Elite of the Ultimate
Never a better caluclator in existance.
Greatest Calculator Ever!!
I am not too happy that TI stopped releasing operating system updates since it's basically the same as the 89 and voyage 200. Other than that, its awesome. The QWERTY keyboard and function key layout is good. The large screen is good. It takes AA instead of AAA batteries so it lasts longer. Pretty print, symbolic manipulation, algebra, and calculus... just awesome. It also does a lot of stuff with units which has been very helpful in several of my enigneering courses.

NEEDS HIGH CONTRAST DISPLAY!!!
I'm sure the capabilities are wonderful. That's why I bought it. But, it was so difficult to use - because I couldn't see what was on the low contrast (even with adjustment) display - that it wouldn't have mattered if it had outclassed a Cray. I couldn't program it without getting a headache from eye strain.If it had a decent display, it would be great. Without reasonable input and output display, it is just a piece of junk! ... Read more

Subjects:  1. Texas Instruments    2. TI92 Plus   

Editorial Review

Hewlett-Packard's HP 48GX is the most powerful calculator in the 48 series, offering the same advanced calculation and programmability features as its siblings, along with expansion options that should appeal to power users and programmers. All this is made possible by the expansion card slot, which lets users expand the built-in memory from 128 KB to a maximum of 1.256 MB or install application software that adds more advanced features to the calculator. Read more

Features

• Over 2,300 functions including over 300 for scientific and engineering applications
• Built-in equation library with over 300 formulas and constants
• 2-way infrared communication, RS-232C serial port; supports optional printer
• 128 KB memory; 2 card ports for expandable RAM and ROM
• 2-D and 3-D graphing capabilities

Reviews (35)

Stack is different.This required learning
To store '5' on the HP48 line of calculators, hit 5 [enter].It's stored.You can even see where it's stored right away because you're always looking at the bottom four stack entries.It seems the previous reviewer believes that the way TI does calculators is the way calculators should be done.If that's you, buy a TI.Storing a value in a named variable is a fundamentally different way of thinking about calculation from the way HP decided to do it. The Mercedes Benz of Calculators
Being a college professor of Electrical Engineering for over 30 years, and having used numerous brands and models of calculators and having written reviews of some of them for various publications, there is no doubt in my mind that the HP48GX is indeed head and shoulders above all the other calculators (even the HP49).The RPL entry system is a natural and easy to learn process that mimics the pencil and paper approach that we've all learned in Grammar school arithmetic.The efficiency of input and the ease with which it handles comlex-number calculations is second to none.Formulae can be entered with mixed units and the calculator automatically performs internal conversions to present the answer in whatever valid units you desire. It handles 2-D and 3-D vectors with all the corresponding mathematical operations seemlessly. The infrared connectivity (wireless) and RS232 port (wire) both allow communication between another HP calculator and your computer.This calculator has the right mix of 'function per key' versus 'menu per key' that makes it very easy to negotiate. HP and RPN Entry
Sorry if this is a little off the topic, but I guess you could say HP sent me here.....Read more

Subjects:  1. graphing   

Editorial Review

The TI-73 is a great compromise for those in the market for a full-featured scientific calculator who don't want to spend a lot of money. The only real problem is that the superior TI-83+ is now available for about the same price, but if you have your mind set on this model, it certainly won't disappoint. Read more

Features

• Graphing calculator for students in middle grades
• Large display screen
• Easy-to-use keyboard
• Stacked fractions
• Upgradable with flash software to keep up with changing curriculum

Reviews (4)

Depends on what you need a calculator for
If you are in grades 4-8 this is a wonderful calculator to explore and formalize your understanding of the math concepts.It has many nice features.However if you need a graphing calculator that you will use through high school use the TI-83 Plus Silver Edition.If you are purchasing during your high school years you may want to consider even starting with a higher caliber calculator than this as a TI-83 Plus will not take you through very many college level math courses until you need something more substantial in available functions.

Good calculator--but I would save the money for a better one
Well....this calculator has many features for middle school students, butreally is it worth it ? If you're in middle school, then you probably won'tneed such an expensive calculator, because you really don't need to use acalculator to graph. If you are learning graphing, you might not be able touse it one the test. In my opinion, I would buy one of those cheaperplainly scientific calculators. They get the job done and they are cheaper.But, if you really want to get a graphing calculator, I would suggest theTI-83 plus. Right here on Amazon.com, it being sold at $86.99, CHEAPER thanthis one and with more functions!!!!!!

The TI 73
The TI 73 is the best. At least in my opinion, it is the best for all thepeople in Middle School. If you are in Middle school at this moment and youneed a graphing calculator for math or science, don't go out and spend alotof money on another kind of calculator. The TI 73 is fit for the job! ... Read more

Subjects:  1. Calculators    2. Texas Instrument   

Editorial Review

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. ... Read more

Features

• 32 KB of RAM
• Built-in equation library
• 300+ Formulas/Scientific constants
• Create applications quickly and easily
• Statistic/Mathematic/Scientific features

Reviews (12)

My faithful calculating companion
I bought mine about 10 years ago, and I still have it and use it extensively. It has seen use all through pursuing my undergraduate degree and my Ph.D., and in my current work. I have used it for calculating things related to computer graphics, statistics, data compression, and a host of other areas. It has always been up to the task. It is loaded with useful functions and does a lot. Sure, it's not as fast as a more modern one, but it's more than adequate.

Used to own one. Durable but some graphing problems.
The good thing about the 48 and other HP's I've owned is that when I have broken them they were actually stolen or lost. I can't say that about the TI-86 or TI-83's I've owned and paid a considerable amount for.HP's seem to be made to last; I hope that hasn't changed. The weakness on the HP48G that I owned during the 90's when graphing calculators came out is that the graphing functions were not as well designed nor worked as well as the TI's. They seem to have improved the latest models so they act a lot more like the TI's. It's something to consider if you are buying an HP graphing calculator from the mid 90's when I purchased and then lost one.
Fine craftsmanship!!!
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! ... Read more

Subjects:  1. Calculators - Graphing    2. Hewlett-Packard   

Editorial Review

The 48gII from HP is a graphing calculator designed for engineering, surveying, math, science, and statistics applications. With its large built-in library of functions and structured programming for creating applications, the 48gII is a powerful computational tool. The 131-by-64-pixel display is easy to see, while the textbook, traditional algebraic, and RPN entry modes provide an easy way to enter data and navigate the calculator's many features.Read more

Features

• Over 2,300 built-in functions
• 128 K memory, 80.7 K available for programming and data storage
• RPN, algebraic, and textbook data entry modes
• Serial and IrDA ports
• Makes 3D graphs, 2D and 3D plots

Reviews (7)

Had it for 18 months, then keyboard started to break
Pros: This calculator (and presumably other HP 48/49 calculators) has an operating system that far surpasses TI's in usability. The angled keys are really nice to use, when they work.
why not get a HP49g+? Look at the price!
at the time of writing the HP49g+ is available on
Hold on to your 48GXs
I had high hopes of this calculator being a "real" 48G, maybe with a faster processor running an EMU, but the original case/key design and ROM.
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Features

• Large and easy to read 8-line by 16-character display
• Graphs up to 4 functions and 3 parametric equations
• Easy-to-use display menus with advanced functions
• 2.4K byte memory stores up to 37 programs
• Easy-to-use keyboard layout; protective slide case

Reviews (4)

Hong
Actually, at first I was a hesitate to buy the ti-81.Finally, I had made the decision to buy it.I find that it's worth every penny.I love it.Trust me, this calculator can do almost everything like the ti-83, except that it doesn't have as much memory as the ti-83 and the ability to transfer info.However, I find that the ti-81 is every easy to use.Not bad at all!!

Pretty Good Calculator
I needed a good graphing calculator quick, and this one really does the job.It's just as good as the later models, don't waste your money on the more expensive ones.The batteries do go pretty quick though.I have to constantly adjust the contrast due to low battery power.

TI-81
If you need a graphing calculator for a calculas class this may do the trick but I recommend the TI-82r a higher model. This calculator did not have the features needed for my college class but it may be ok for a high school class. See what features you need and then buy it. The only good thing about it was you cant beat the price. ... Read more

Editorial Review

The FX-9750G from Casio is a scientific graphing calculator with a wide range of functions and features. Accepted on major exams such as the SAT, ACT, and others, this calculator is a valuable study and learning tool. The 21-character per line, 8-line display is easy to see with a screen size of 64 by 128 pixels. The icon-driven menu and 20 function keys provide an easy way to navigate through the calculator's many features. Read more

Features

• brand name:Casio
• manufacturer:Casio
• model name:fx-7400G Plus
• memory:20 KB
• display size:6 lines, 13 characters/line

Subjects:  1. Calculator (Calculators)    2. Graphing    3. Scientific