A graphing, graphic or graphical calculator typically refers to a class of handheld calculators that are capable of plotting graphs, solving simultaneous equations, and performing numerous other tasks with variables. Most popular graphing calculators are also programmable, allowing the user to create customized programs, typically for scientific/engineering and education applications. Due to their large displays intended for graphing, they can also accommodate several lines of text and calculations at a time. Some graphing calculators also have color displays, and others may even include 3D graphing.
Since graphing calculators are readily user-programmable, such calculators are also widely used for gaming purposes, with a sizable body of user-created game software on most popular platforms. They also find use in secondary school mathematics, such as algebra and trigonometry.
The popular Graphing Calculator manufacturers include Texas Instruments, HP, Casio, Sentry and Sharp. Before buying a graphic calculator it is important to ask yourself about the uses you will put the calculator to, for example school students would be advised to ask their teachers which graphing calculator they should purchase.
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