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Calculator, Graphing; Texas Instruments; Educational; EZ-Spot; TI-84 Plus Silver Edition; Bright yellow back cover and slide case; Teachers pack; Built-in USB port; Preloaded software applications; 8 Line x 16 character display
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A computing devices that is able to plot graphs and solve graphing problems is called a graphing calculator. It can solve simultaneous equations and can perform various tasks with variables. The calculator has a large display that is able to take in numerous lines of text and calculations at the same time. There are also color displays, 3D graphing, and readily user-programmable graphing calculators that are useful in education, engineering, and scientific applications.
World's Leading Producers
Casio, Hewlett Packard (HP), Texas Instruments (TI), and Sharp are the world's leading producers of graphing calculators. Each company has their own top of the line models.
For instance, Casio has its fx-7000G graphing calculator manufactured in 1985. it was also one of the first graphing calculators that came out in the market. Hewlett Packard has HP-28C after few years and eventually produced the HP-28S in 1988.
The other models HP had produced are the HP-48SX in 1990, HP-48S in 1991 and the recent model, the HP 50g in 2006. The HP 50g has a feature of Computer Algebra System (CAS), powerful in solving analytical problems and in manipulating symbolic expressions. The production of HP-28 and HP-48 range is specifically intended to groups of science and engineering professionals.
The HP-38 HP-39 and HP-40 target the high school and college students as the main market. And the HP-49 model is sold to all levels of both educational and professional customers. It is known for its standard expression entry interface. All the HP series are popular because they are featured with Reverse Polish Notation interface.
In 1990, Texas Instruments started to manufacture graphing calculators. Their first model was the TI-81 series. The TI-82 and TI-83 series consist of TI- 83, TI-83 Plus, and TI-83 Plus Silver Edition. These have larger internal memory. Their TI-80 and TI-73 series are best suitable for students, ages 10 to 14 years old. The design of TI-85, TI-86, TI-89 series, and TI-92 series which comprises of the TI-92, TI-92 Plus, and Voyage 200 are applicable for calculus. And the TI-89 and TI-92 series are designed with computer algebra system; however, the TI-92 series offers a QWERTY keypad.
Texas Instrument devices are purposely produced mainly for the educational sector and the general public. Sharp has been also involved in the production of graphing calculators. However, they do not have collections of programs.
Here are the top selling models regardless of brand names:
HP 48G II Graphing Calculator
It is a perfect graphing calculator for either laboratory activities or classroom work in math, science, statistics, engineering and surveying. The calculator features 128KB Memory, and 80.7KB of the total memory is available to the user. It has 131 x 64 pixel display and has large built-in constant library and structured programming for making applications.
The HP graphing calculator features more than 2,300 functions. It has a Computer Algebra System (CAS). This feature is very helpful in numeric solving and symbolic manipulation. Thus working in complex arithmetic or calculus functions will be easier and not complicated.
It also provides comfortable viewing because it has a large screen along with 2D and 3D graphing modes. Such screen has also serial port and IrDA connectivity that consists of cable and software. The serial port can be connected to the PC for easy transfer of data. The graphing calculator is featured with algebraic, RPN and textbook entry modes As well.
It is operated on three batteries. It also comes with an auto shut off feature after five idle minutes. It measures only 7.2 x 3.4 x .09 inches and weighs 7.7 ounces.
Texas Instruments TI-89 Titanium Graphing Calculator
Texas Instruments TI-89 Titanium Graphing Calculator is ideal for advanced engineering applications and advanced college mathematics. It has a big working memory of 188 KB RAM, and upgradeable to 2.7 MB Flash ROM and 3D graphing. It includes a mini USB port and such USB port is useful for a more convenient transferring of data. It has a display of 100 x 160 pixels.
This device is handy in storing important financial data. It has pre-programmed applications like a cell sheet, polynomial root finder, calendar, note folio, symbolic math guide, French and German localization, and simultaneous equation solver. The calculator has a graph mode that can store 99 equations. And some of the analysis of TI calculator includes maximums, minimums, roots, intersections, derivatives, arc lengths, inflection points, and integrals.
The unit comes in a hard slide case and power supplied by 4 batteries that are silver oxide. It comes along as well with a user instruction guide. It has one year warranty for the parts and for the labor.
Casio CFX-9850GB Plus Graphing Calculator
This graphing calculator is best for math and science students. It has 900 advanced features to help solve problems quickly and accurately. It has a total memory of 32 KB and can store up to 38 programs. It has also a large, easy to read display that can show eight lines and 21 characters, 15-digit, 10-plus-2. And such display is in three colors which make then the graph in animated form. Thus the variables in can be changed in a formula, and then will able to view the movement of the graph.
The calculator has ability to work on statistical calculations that include histograms, eight regression types, scatter plots, and box and whisker plots. It has a built-in communications port that can be connect to a personal computer. Graphic functions include making vertical lines, parametric, rectangular and polar coordinates.
The Casio graphing calculator is enclosed in a hard slide case and uses four alkaline batteries and a lithium battery. It comes also with a user guidebook. It weighs 2 pounds.
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It's 8 o'clock at night. Dinner is over. You're sitting down to watch a movie or Monday Night Football -- and then it happens . . . "Mommmmmmmmm (or Daddddddddddd), my calculator isn't working. I have to turn in my math homework tomorrow, and my graph isn't showing up."
"This can't be so bad", you think. "I passed high school math. Heck, I even installed the Quicken Accounting System at work. How complicated can a calculator be?"
The last time you looked at your child's TI-83 or TI-84 was in August at the office superstore; it was in the front of a shopping cart with on top of a pile three ring binders and notebook paper. It didn't look so bad then, but now you take a closer look and there are all kinds of keys you never saw before on a calculator. At the bottom is something familiar -- a normal looking array of number keys, and at the right are the usual add, subtract, multiply, and divide keys. But what the heck are "MODE", "DEL", "STAT", "ZOOM", "TRACE", etc. ? What are you going to do? Who ya gonna call?
Relax.
Here are a couple of really simple things to do; but remember, the title of this article is "Help, My TI-83 / Ti-84 Won't Graph", and that is really all that is addressed in this article.
The Graphing Buttons
Look at the top row of buttons on the TI-83/TI-84 calculator. There should be five of them, set apart from the other buttons; and they should have the following labels:
[Y=] [WINDOW] [ZOOM] [TRACE] [GRAPH]
This is where all of your activity is going to take place.
The Three Major Problems
Most of the time when a graph is not displaying, there are three reasons:
Graph Function.The graph function is not entered properly, or not entered at all. Graph Not Turned On. The graph function is entered properly, but graphing is not turned on. Viewing Window. The viewing window for the function is set to the wrong size or location.
We will deal with these one at a time.
Check that the Graph Function is Entered Properly
Push the [Y=] key at the top of the calculator. This puts you into the Y= editor screen. You should see a screen that looks something like this:
Plot1 Plot2 Plot3
Y1= 2X+1
Y2=
Y3=
Y4=
Y5=
Y6=
The expression "2X+1" is just an example, but you need to see some kind of expression in the Y= editor screen, not just a bunch of blank "Y=" lines. If all you see is the following, then you need to add an expression:
Plot1 Plot2 Plot3
Y1=
Y2=
Y3=
Y4=
Y5=
Y6=
If you want to try a really simple expression to make sure that the calculator can plot, use "Y1=X". This should plot a nice 45 degree line directly through the origin of the graph screen.
Check that the Graph Function is Turned On
It is possible that graphing of the function is not turned on in the Y= editor screen. This error is a little bit subtle. Look at the "=" sign in the equation you are trying to plot The "=" sign, must be highlighted.
If it is not, you must cursor to the "=" sign and press the [ENTER] key, to highlight it.
Viewing Window must be Set to Correct Size and Location
If the viewing window is set to the wrong size or location, the calculator may plot but you won't see it on the screen.
There are many ways to set the viewing window, but an easy reliable method is to simply "Zoom Out", until you see the function you are trying to graph. Push the [ZOOM] key at the top of the calculator. Then push "3" to zoom out. Repeat until you see the function you are trying to graph. Now you should have some idea what window you need to use to see the function plotted. Push the [WINDOW] key at the top of the calculator and adjust the display characteristics as necessary.
The TI-84 Plus Silver Edition graphing calculator comes with a USB cable, plenty of storage and operating memory, and lots of pre-loaded software applications (Apps) - all to help you gain an academic edge from pre-algebra through calculus, as well as biology, chemistry and physics. Key features: . USB cable included for downloading free Apps and games. Preloaded Periodic Table and Organizer software applications. FREE Download for SAT or ACT questions. Customizable color faceplates (available separately)NEW! TI-84 Plus operating system update This latest OS update features MathPrint . NEW Stat Wizards for selected commands and functions . FREE Download for MathPrint. Input and view math symbols, formulas and stacked fractions exactly as they appear in textbooks. Scroll the history of calculations and quickly recall input/output . Fraction math with easy-to-use templates. Trace a function using each fraction listed (or those you define) as the step sizes. Choose how you prefer to view calculations on screen: as decimals or fractions . Choose different display modes that include: n/d Un/d, Answer: AUTO DEC FRAC, GOTO FORMAT GRAPH: NO YES, STAT DIAGNOSTICS: OFF ONFREE! test prep practice questions TI and The Princeton Review have come together to provide students with a complete college preparation resource. Download free SAT or ACT questions on your TI graphing calculator and get test-ready to perform your best. Find what you need TI graphing calculators are learning tools designed to help students visualize concepts and make connections in math and science. Take a look at the TI Calculator Comparison Chart to find which model fits your needs. New App makes entering easier You can now see and enter math problems in your TI graphing calculator just like they appear in your textbooks. Download the free Zoom Math Starter Edition - App4Math App by I.Q. Joe to your TI-83 Plus or TI-84 Plus family calculator.
For over 15 years, Texas Instruments has owned the graphing calculator marketplace. Since the release of the TI-81 graphing calculator, TI has grown their following by improving that original TI-81 into the TI-82, TI-83, TI-83 plus, and eventually, the TI-84 plus. The TI-84 plus is still remarkably close to the TI-81. Despite the fact that the TI-84 has been incredibly popular, it's a dated device. Texas Instruments realized it was time for a new platform.
So in in 2007, Texas Instruments made public their new calculator, the Nspire. The improved features from the old product line were striking. On the old TI-84, the menus were odd at best, nonsensical at worst. It was hard for beginners just to figure out which button to push, and then the menu would fill the entire screen. With the Nspire, drop down menus are the norm, meaning students can stay in the screen they were working on and pull down a menu the way they would on a computer. Among other features are the highest resolution screen available on a calculator, the ability to save documents, a spreadsheet mode, mathprint for virtually all mathematical symbols, and a vastly improved system for graphing equations, simplifying the 84's ancient interface.
Frankly, the TI-Nspire made the TI-84 look like a dinosaur, and yet, the first reaction in the market was tepid. Why? TI didn't anticipate the reaction of two influential groups. First, despite positive TI-Nspire review s, educators were initially hesitant to adopt the Nspire. Many had just spent too much in the old TI-84. That was the case both in terms of the time invested learning the TI-84 and in terms of the school budget invested on classroom sets of TI-84 calculators. Texas Instruments tried to ease that consternation by offering a TI-84 keyboard that made the TI-Nspire look and act like a TI-84, but many felt that defeated the purpose of the Nspire. The other group that was cautious about the Nspire was the hacker community. At first, the TI-Nspire didn't offer programming as an option. Later, an OS upgrade offered some programming, but it wasn't enough to win over the programmers.
Lately, the Nspire has been gaining traction. Texas Instruments has noticed, getting rid of the Silver Edition of the TI-84. Now, however, TI finally faces competition from a competitor's calculator, not just its own TI-84. Casio has revealed its answer to the TI-Nspire. The Casio Prizm offers many of the same features as the TI-Nspire at almost the same cost, but offers two extra features with backlighting and the ability to display color pictures. The Prizm is set to be out in January 2011.
The Nspire finally has traction with buyers, but will face tough competition from the Prizm. The question now is whether the educator loyalty and user support they've created over the last 20 years will be enough for the TI-Nspire.
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