![]() ![]() Graphing calculatorsare 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. 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. ![]() Common brands such as Texas Instruments, HP and Casio each offer several styles with different levels of computational capability. Staples carries many different types of calculators including professional financial models and scientific calculators for students. 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. They simplify daily tasks such as paying bills, balancing checkbooks or ledgers and completing homework assignments. Calculators are essential tools for the home, office and classroom. Calculators – Scientific, Graphic and Financial Calculators.
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