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Staples® SPL-230-CC 8-Digit Display Calculator
$ 8.29
Staples SPL-250 10-Digit Display Calculator
$ 15.79
Texas Instruments TI-84 Plus Graphing Calculator
$ 119.99
Staples® SPL-230 8-Digit Display Calculator
$ 5
Texas Instruments TI-84 CE Color Screen Graphing Calculator, Black
$ 159.99
Texas Instruments® TI-30Xa Scientific Calculator
$ 9.99
Staples® SPL-230 8-Digit Display Calculator, Assorted Designs
$ 5
Texas Instruments TI-NSPIRE CX CAS Graphing Calculator
$ 164.99
Texas Instruments® TI-30XIIS Scientific Calculator, Blue
$ 15.99
Canon 4075A007AA LS-82Z 8-Digit Display Calculator
$ 9.29
Casio® FX-300MS Plus Scientific Calculator
$ 10.49
Texas Instruments TI-84 CE Color Screen Graphing Calculator, Silver
$ 159.99
Casio FX260SLRS Pink Solar Scientific Calculator, 144 built-in functions
$ 9.49
Texas Instruments® TI-36X Pro Scientific Calculator
$ 19.99
Texas Instruments TI-83 Plus Graphing Calculator
$ 109.99

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Calculators are essential tools for the home, office and classroom. They simplify daily tasks such as paying bills, balancing checkbooks or ledgers and completing homework assignments. There are many different styles and models available, from simple devices with single-line screens to scientific and graphing models that can handle complex mathematical equations. Staples carries many different types of calculators including professional financial models and scientific calculators for students.

Types of Calculators
Common brands such as Texas Instruments, HP and Casio each offer several styles with different levels of computational capability. Handheld or desk models usually have large buttons for numbers and basic mathematical functions along with a display that portrays a single line in large text.

Graphing calculators are larger and feature many buttons for numerals and functions as well as a large screen to show multiple lines of computations or two-dimensional graphs. Scientific models fit in between basic and graphing devices regarding functionality. They include additional capabilities beyond a basic model, such as logarithmic and trigonometric functions, and display one or two lines of numbers. There are also calculators that include printing capability to create hard copies of computations and results. Some styles print in both black and red ink to distinguish between deposits and withdrawals.

Choosing the Right Calculator Features
When selecting a device for the home or office, there are several things to consider. The type of work you will be doing is the most important factor. A basic calculator works well to keep on a desk for quickly completing and checking simple calculations. These styles generally include addition, subtraction, multiplication and division, as well as an easy way to change the sign of the current input. Most solar-powered models are extremely efficient for areas that get a lot of light. You can find models with an angled display that's easy to read and different colored buttons for numerals and functions.

Students may prefer a scientific or graphing style to help with homework, especially for higher-level math such as trigonometry and calculus. Most devices include numerous operations as well as a memory bank that contains several inputs or results for quick recall. Accountants usually find printing models useful for completing long strings of calculations and having a physical receipt to add to ledgers or files.

Do Calculators Require a Specific Type of Battery?
Nearly all basic calculators need some sort of battery as a main or secondary power supply. Some handheld versions use solar cells, and large printing models may include an AC power supply. Most devices use standard AA or AAA batteries or smaller watch-type batteries.

What Are the Benefits of Engineering Calculators?
Some brands refer to scientific styles as engineering calculators. These models are useful for complex mathematical calculations and can display several lines of text at a time. Some financial calculators allow complicated equations to appear in a vertical rather than horizontal configuration. This makes it easy to compare user inputs with textbook notations to ensure accuracy.

Are There Calculator Accessories?
Other than replacement batteries, most calculators don't require any additional accessories. Some solar models work better when used under a bright desk lamp. Printing devices require that the paper and ink are restocked occasionally."

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